Technical Service Bulletins (TSBs) for the 2021 GLC300 are official communications between Mercedes-Benz & their dealerships that describe processes for troubleshooting or fixing certain common problems. All vehicle manufacturers are required by U.S. law to make their TSBs available to the public.

    STEERING

    • TSB #LI46.10-P-077314

      Date Announced:
      JAN 24, 2024
      NHTSA ID:
      #10249495

      Noises in the steering column area when steering. Under analysis. Check which area of the steering column the noises occur in. Read More »

    • TSB #LI46.10-P-077313

      Date Announced:
      JAN 24, 2024
      NHTSA ID:
      #10249482

      The steering wheel generates grinding noises between the steering wheel and steering column switch module during steering maneuvers See example file in the attachments area: Lenkrad-Schleifger??A?usch_SteeringWheel-GrindingNoises. Read More »

    • TSB #LI46.15-P-063353

      Date Announced:
      DEC 01, 2022
      NHTSA ID:
      #10228807

      Complaint Height adjustment of electric steering column adjustment jammed in the top/bottom adjustment position (e.g. with Easy Entry function). Cause Height adjustment moves to the top/bottom limit stop and jams. Read More »

    • TSB #LI46.35-P-062791

      Date Announced:
      NOV 07, 2022
      NHTSA ID:
      #10227142

      Complaint 1. Vibrations noticeable at steering wheel when front axle is excited when driving at a speed between 65 km/h and 130 km/h over an obstacle. Read More »

    • TSB #LI46.15-P-063353

      Date Announced:
      SEP 12, 2022
      NHTSA ID:
      #10222461

      Complaint Height adjustment of electric steering column adjustment jammed in the top/bottom adjustment position (e.g. with Easy Entry function). Cause Height adjustment moves to the top/bottom limit stop and jams. Read More »

    • TSB #LI46.15-P-075284

      Date Announced:
      SEP 12, 2022
      NHTSA ID:
      #10222462

      Complaint Malfunction of the electric steering column adjustment. The adjustment application by the driver does not correspond to the adjustment direction of the steering column. Read More »

    • TSB #LI46.15-P-063353

      Date Announced:
      JUL 14, 2022
      NHTSA ID:
      #10217157

      Complaint Height adjustment of electric steering column adjustment jammed in the top/bottom adjustment position (e.g. with Easy Entry function). Cause Height adjustment moves to the top/bottom limit stop and jams. 1. Read More »

    • TSB #LI46.35-P-062791

      Date Announced:
      JUN 13, 2022
      NHTSA ID:
      #10214958

      Complaint 1. Vibrations noticeable at steering wheel when front axle is excited when driving at a speed between 65 km/h and 130 km/h over an obstacle. Read More »

    • TSB #LI46.35-P-062791

      Date Announced:
      APR 29, 2022
      NHTSA ID:
      #10213048

      Complaint 1. Vibrations noticeable in steering wheel when front axle is excited while driving at a speed above 40 mph over an obstacle. Read More »

    • TSB #LI46.10-P-072751

      Date Announced:
      MAR 29, 2021
      NHTSA ID:
      #10191260

      Complaint: When removing the steering column switch module, a fracture may occur in the bridge of the locking hole on the steering column switch module cover, at the join with the bellows extension. Read More »

    • TSB #LI46.11-P-071594

      Date Announced:
      MAR 19, 2021
      NHTSA ID:
      #10191272

      Steering wheel heater and/or Distronic cannot be activated. Remedy: Update software for steering wheel electronics control unit ("N 135 - Steering wheel electronics (LRE)"). Read More »

    SUSPENSION

    • TSB #LI32.25-P-076956

      Date Announced:
      OCT 12, 2023
      NHTSA ID:
      #10244735

      Wheezing noises from the front shock absorbers when passing over surface undulations and rough road. The noises may become more conspicuous with warm damper oil. The flow noises of the damper oil are currently being analyzed. Read More »

    • TSB #LI32.33-P-070817

      Date Announced:
      JAN 09, 2023
      NHTSA ID:
      #10231024

      Complaint - AIRMATIC fault message in instrument cluster - Compressor inoperative, 40A compressor fuse possibly triggered. Read More »

    • TSB #LI32.25-P-066246

      Date Announced:
      JUL 11, 2022
      NHTSA ID:
      #10217154

      Complaint Thumping noise on rear axle shock absorber on rough road. Cause Until now the rear axle shock absorber support bushing was only available together with the rear axle shock absorber as a replacement part. Read More »

    SUSPENSION:FRONT:SHOCK ABSORBER

    • TSB #LI32.25-P-076956

      Date Announced:
      OCT 12, 2023
      NHTSA ID:
      #10244735

      Wheezing noises from the front shock absorbers when passing over surface undulations and rough road. The noises may become more conspicuous with warm damper oil. The flow noises of the damper oil are currently being analyzed. Read More »

    ENGINE (PWS)

    ENGINE AND ENGINE COOLING

    • TSB #NCU-2023070019

      Date Announced:
      AUG 25, 2023
      NHTSA ID:
      #10241530

      Mercedes-Benz AG (a??MBAGa??), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year 2021 C-Class (205 platform), CLA (118 platform), G-Class (463 platform), GLC (253 platform), GLA (247 platform) and ... Read More »

    • TSB #SC-2021070006

      Date Announced:
      JUL 07, 2022
      NHTSA ID:
      #10217148

      Mercedes-Benz AG (a??MBAGa??), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year 2021 CLA (118 platform), GLE/GLS (167 platform), C-Class (205 platform), E-Class (213 platform), GLA (247 platform), GLC ... Read More »

    • TSB #LI09.00-P-074093

      Date Announced:
      DEC 08, 2021
      NHTSA ID:
      #10206077

      "MY15+ M278 and M157 Equipped Vehicles with Fault Code ""P023400 a?? Boost Pressure is Too High"" " Read More »

    • TSB #LI2700P073106

      Date Announced:
      MAY 25, 2021
      NHTSA ID:
      #10202530

      Remote start causing CEL and U012600. Read More »

    ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:SEALS/GASKETS

    ENGINE AND ENGINE COOLING:COOLING SYSTEM

    • TSB #LI20.10-P-072886

      Date Announced:
      APR 20, 2021
      NHTSA ID:
      #10195221

      with engine M17x the ME Control Unit: "The Coolant Temperature is Below the Specified Temperature" Read More »

    FUEL SYSTEM, GASOLINE

    • TSB #LI8860P073470

      Date Announced:
      AUG 11, 2021
      NHTSA ID:
      #10205814

      Fuel filler flap opens slowly/switch flashes/tank is bleeding instrument cluster warning Read More »

    • TSB #Launch EW NCU

      Date Announced:
      JUL 30, 2021
      NHTSA ID:
      #10199787

      Launch EW NCU - Low Pressure Fuel Hose MY 15-17 205 213 253 172 Read More »

    FUEL SYSTEM, GASOLINE:STORAGE

    • TSB #LI8860P073470

      Date Announced:
      AUG 11, 2021
      NHTSA ID:
      #10205814

      Fuel filler flap opens slowly/switch flashes/tank is bleeding instrument cluster warning Read More »

    POWER TRAIN

    • TSB #LI07.61-P-072135

      Date Announced:
      MAR 02, 2021
      NHTSA ID:
      #10194142

      When accelerating at low speeds (slow roll at < 9 mph, 2nd gear), the engine limp-home mode may be triggered which in turn limits the amount of power available. Read More »

    ELECTRICAL SYSTEM

    • TSB #OTA - 20240402

      Date Announced:
      APR 26, 2024
      NHTSA ID:
      #10253703

      This is to notify you of the Service Campaign OTA update for the MBUX system software in 750,313 Model Year (MY) MY19-24 A-Class, CLA, CLS, E-Class, EQB, GLA, GLB, GLC, GLE, GLS, GT 4-door (177, 118, 257, 213, 238, 243, 247, 253,167, 290 ... Read More »

    • TSB #NCU - 2024020008

      Date Announced:
      MAR 01, 2024
      NHTSA ID:
      #10252835

      i?? Always use the latest XENTRY Diagnosis software release with all available add-ons. i?? Make sure to follow the operation steps exactly as described in XENTRY Diagnosis. Read More »

    • TSB #OTA-24240203

      Date Announced:
      FEB 29, 2024
      NHTSA ID:
      #10251192

      Mercedes-Benz AG (??A???A???A?MBAG??A???A???A?), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 21-24 C-Class, EQE, EQS, GLC, GLE, GLS, S-Class, SL (206, 294, 295, 296, 297, 254, 167, 223, 232 platform) ... Read More »

    • TSB #LI82.60-P-077553

      Date Announced:
      FEB 23, 2024
      NHTSA ID:
      #10251356

      The radio station favorites list is no longer present after bus idle Saving process during download Perform software update in control unit HU6 in the head unit (A26/17) to version E871.1 (A 247 904 53 00). Read More »

    • TSB #OTA-24240201

      Date Announced:
      FEB 09, 2024
      NHTSA ID:
      #10251176

      Mercedes-Benz AG (??A???A???A?MBAG??A???A???A?), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY20-23 A-Class, C-Class, CLA, CLS, E-Class, GLA, GLB, GLC, GLE, GLS, AMG GT, S-Class (177, 205, 118, 257, 213, ... Read More »

    • TSB #NCU-OTA Comm Mod

      Date Announced:
      JAN 29, 2024
      NHTSA ID:
      #10249540

      Mercedes-Benz AG (??A?A?MBAG??A?A?), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2019-2023 A-Class, CLA, E-Class, G-Class, GLA, GLB, GLC, GLE, GLS, and S-Class (177, 118, 238, 463, 247, 253, 167, and 222 ... Read More »

    • TSB #NCU-OTAcommNoMMC

      Date Announced:
      JAN 18, 2024
      NHTSA ID:
      #10249726

      Mercedes-Benz AG (??A?A?MBAG??A?A?), the manufacturer of Mercedes-Benz, has determined that in certain MY 2017-2021 C-Class, CLA, CLS, E-Class, GLC, GLE, GLS, AMG GT, S-Class, SL, and SLC (205, 117, 257, 213/238, 253, 166/292, ... Read More »

    • TSB #OTA-Comm Mod SW

      Date Announced:
      DEC 07, 2023
      NHTSA ID:
      #10248195

      Mercedes-Benz AG (??A?A?MBAG??A?A?), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY19-23 A-Class, C-Class, CLA, CLS, E-Class, EQB, G-Class, GLA, GLB, GLC, GLE, GLS, AMG GT, S-Class (177, 205, 118, 257, 213, ... Read More »

    • TSB #OTA-Head Unit SW

      Date Announced:
      DEC 01, 2023
      NHTSA ID:
      #10248203

      Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY19-23 A-Class, CLA, CLS, E-Class, EQB, GLA, GLB, GLC, GLE, GLS, AMG GT (177, 118, 257, 213, 238, 243, 247, 253,167, 290 platform) vehicles, the ... Read More »

    • TSB #NCU -MBUX SW OTA

      Date Announced:
      OCT 20, 2023
      NHTSA ID:
      #10244748

      Mercedes-Benz AG (??A?A?MBAG??A?A?), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY21-23 C-Class, EQS, S-Class, SL, EQE, GLC (206, 296, 297, 223, 232, 294, 295, 254 platform) vehicles, the head unit software ... Read More »

    • TSB #LI82.85-P-076800

      Date Announced:
      OCT 10, 2023
      NHTSA ID:
      #10244837

      The "SOS nonfunctional" message appears sporadically in the instrument cluster of the vehicle. The fault code B129C00 is stored in the control unit log. Read More »

    • TSB #NCU-HU SW Update

      Date Announced:
      AUG 28, 2023
      NHTSA ID:
      #10241527

      Mercedes-Benz AG (a??MBAGa??), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2018-2023 C-Class, EQE, EQE SUV, EQS, EQS SUV, GLC, GLE and S-Class (206, 295, 294, 297, 296, 254, 167 and 223 platform) ... Read More »

    • TSB #LI82.85-P-076799

      Date Announced:
      AUG 18, 2023
      NHTSA ID:
      #10241790

      The Mercedes me connect services cannot be activated. The remote status data does not update. Error in N112/9 - control unit for telematics services (HERMES). Read More »

    • TSB #NCU - HU Update

      Date Announced:
      JUL 19, 2023
      NHTSA ID:
      #10240250

      Mercedes-Benz AG (a??MBAGa??), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2021-2024 C-Class, EQE, EQE SUV, EQS, EQS SUV, GLC, GLE and S-Class (206, 295, 294, 297, 296, 254, 167 and 223 platform) ... Read More »

    • TSB #NCU-2023060003

      Date Announced:
      JUN 15, 2023
      NHTSA ID:
      #10238437

      Mercedes-Benz AG (a??MBAGa??), the manufacturer of Mercedes-Benz, has determined that on certain Model Year (a??MYa??) 2016 a?? 2021 C-Class (205 platform), E-Class (213 platform) and GLC (253 platform) vehicles, the air conditioning ... Read More »

    • TSB #LI82.85-P-075375

      Date Announced:
      JUN 09, 2023
      NHTSA ID:
      #10238424

      In the MBUX weather app, the temperature is displayed in the wrong unit (Fahrenheit instead of A?C, or vice versa). Read More »

    • TSB #NCU-2022010001

      Date Announced:
      FEB 10, 2023
      NHTSA ID:
      #10232320

      Mercedes-Benz AG (a??MBAGa??), the manufacturer of Mercedes-Benz, has produced certain MY 2021-2022 A-Class, CLA-Class, CLS-Class, E-Class, GLA-Class, GLB-Class, GLC-Class, GLEClass, GLS-Class, and AMG GT (177, 118, 257, 213, 247, 253, ... Read More »

    • TSB #LI72.20-P-075746

      Date Announced:
      JAN 05, 2023
      NHTSA ID:
      #10231032

      Complaint Tailgate opens unintentionally. Cause Accidental or unnoticed activation of the button to open the tailgate on the vehicle key. E.g. when stored in trouser pocket, handbag etc. Read More »

    • TSB #LI82.60-P-075292

      Date Announced:
      SEP 08, 2022
      NHTSA ID:
      #10222481

      Complaint Customer states after a bus sleep the SiriusXM category changes from "My Favorites" to "All Stations" or a different category. Read More »

    • TSB #LI82.85-P-075223

      Date Announced:
      AUG 26, 2022
      NHTSA ID:
      #10219254

      Complaint In an initial quick test, DTC B238A00 "Fan 2 of the control unit has malfunctioned" may be active and/or stored in the MBUX Multimedia System (A26/17) Cause Current MBUX Multimedia System (A26/17) software release ... Read More »

    • TSB #NCU-2022060008

      Date Announced:
      JUN 30, 2022
      NHTSA ID:
      #10215016

      Mercedes-Benz AG (a??MBAGa??), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year (a??MYa??) 2020-2022 A-Class, C-Class, CLAClass, GLA-Class, GLB-Class, GLC-Class, GLE-Class, and GLS-Class (118, 167, ... Read More »

    • TSB #SC- 2022030017

      Date Announced:
      APR 27, 2022
      NHTSA ID:
      #10210919

      Mercedes-Benz AG (a??MBAGa??), the manufacturer of Mercedes-Benz, has determined that certain MY 2021-2022 CLA-Class, A-Class, CLS-Class, E-Class, GLA-Class, GLB-Class, GLC-Class (118, 177, 213, 238, 247, 253, and 257 platform) vehicles ... Read More »

    • TSB #LI40.15-P-074659

      Date Announced:
      APR 01, 2022
      NHTSA ID:
      #10210926

      Complaint Fault message (yellow) in instrument cluster and TPM warning lamp. Individual or all tire pressure sensors are not recognized. Tire pressure monitoring system nonfunctional / temporarily unavailable. Read More »

    • TSB #LI54.10-P-071499

      Date Announced:
      MAR 31, 2022
      NHTSA ID:
      #10209877

      Complaint The result from the XENTRY battery test does not match the current state of the battery. Cause The XENTRY battery tester uses the stored on-board electrical system data in the SAM module to access the health of the 12 volt ... Read More »

    • TSB #LI82.85-P-069961

      Date Announced:
      FEB 24, 2022
      NHTSA ID:
      #10208745

      Complaint The following complaints may be noted by the customer: a?? Upon selecting navigation, the central display may show the following message: "Map data does not match with your system. Read More »

    • TSB #SC-2022010008

      Date Announced:
      FEB 04, 2022
      NHTSA ID:
      #10208671

      Mercedes-Benz AG (a??MBAGa??), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2021-22 A-Class (177 platform), CLA-Class (118 platform), CLS-Class (257 platform), E-Class (213 and 238 platform), GLA-Class, ... Read More »

    • TSB #LI68.05-P-060306

      Date Announced:
      JAN 27, 2022
      NHTSA ID:
      #10207198

      Complaint The garage door hand transmitter cannot be initialized with the integrated garage door opener in the inside rearview mirror. Cause 1. Read More »

    • TSB #LI68.05-P-060307

      Date Announced:
      JAN 09, 2022
      NHTSA ID:
      #10207199

      Complaint The range of the integrated garage door opener (GTO) is too short. Cause 1. Vehicles equipped with infrared windows and/or a heated windshield may suffer from complaints involving low transmission power. 2. Read More »

    • TSB #LI91.30-P-073902

      Date Announced:
      JAN 04, 2022
      NHTSA ID:
      #10207205

      Complaint Seat heating on driver's seat and front passenger seat nonfunctional. The LEDs on the switches for the seat heating illuminate, but the seat heating mats do not get warm. Cause Faulty SCN coding of rear SAM. Read More »

    • TSB # LI82.85-P-06996

      Date Announced:
      DEC 02, 2021
      NHTSA ID:
      #10206067

      MBUX multimedia system: Map data does not match with your system/the navigation system cannot be activated Read More »

    • TSB #LI8285P073418

      Date Announced:
      AUG 24, 2021
      NHTSA ID:
      #10205813

      On vehicles with code 077 HERMES dummy module the following functions are restricted, unavailable. Read More »

    • TSB #LI4770P073121

      Date Announced:
      JUN 04, 2021
      NHTSA ID:
      #10202522

      Vehicle does not start after charging process Read More »

    • TSB #LI46.10-P-072751

      Date Announced:
      MAR 29, 2021
      NHTSA ID:
      #10191260

      Complaint: When removing the steering column switch module, a fracture may occur in the bridge of the locking hole on the steering column switch module cover, at the join with the bellows extension. Read More »

    • TSB #LI80.57-P-072708

      Date Announced:
      MAR 24, 2021
      NHTSA ID:
      #10191271

      Engine switches off again when re-attempting Remote Start via Mercedes me App. This only occurs if the first Remote Start via the Mercedes me App was canceled and then started again. Read More »

    • TSB #LI42.47-P-069817

      Date Announced:
      MAR 19, 2021
      NHTSA ID:
      #10191288

      After ignition ON, the following message is shown on the instrument cluster: - "Unavailable! - ESP - Service Required" Read More »

    • TSB #LI27.00-P-072627

      Date Announced:
      MAR 16, 2021
      NHTSA ID:
      #10191278

      Fault in 12 V interlock circuit Read More »

    • TSB #LI07.61-P-072135

      Date Announced:
      MAR 02, 2021
      NHTSA ID:
      #10194142

      When accelerating at low speeds (slow roll at < 9 mph, 2nd gear), the engine limp-home mode may be triggered which in turn limits the amount of power available. Read More »

    • TSB #LI82.85-P-071394

      Date Announced:
      FEB 24, 2021
      NHTSA ID:
      #10189407

      In XENTRY diagnosis, the message "MBUX multimedia system control unit is defective (hard drive, internal fault)" appears while attempting to communicate with the MBUX multimedia system (A26/17) Read More »

    • TSB #LI83.20-P-072178

      Date Announced:
      JAN 04, 2021
      NHTSA ID:
      #10187784

      The customer complains that when the ignition is switched on, pulsating buzzing noises which fluctuate in volume can be heard coming from the area of the instrument panel or the driver's footwell. Read More »

    • TSB #LI82.85-P-069381

      Date Announced:
      JAN 04, 2021
      NHTSA ID:
      #10187785

      The following complaints may be noted by the customer: - The MBUX multimedia system (A26/17) starts route guidance without user input and does not provide any audio notification. Read More »

    ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL

    • TSB #LI82.85-P-076800

      Date Announced:
      OCT 10, 2023
      NHTSA ID:
      #10244837

      The "SOS nonfunctional" message appears sporadically in the instrument cluster of the vehicle. The fault code B129C00 is stored in the control unit log. Read More »

    • TSB #LI8370P0644803

      Date Announced:
      AUG 11, 2016
      NHTSA ID:
      #10205252

      High voltage battery warning message in instrument cluster. Read More »

    ELECTRICAL SYSTEM:SOFTWARE

    • TSB #NCU - 2024020008

      Date Announced:
      MAR 01, 2024
      NHTSA ID:
      #10252835

      i?? Always use the latest XENTRY Diagnosis software release with all available add-ons. i?? Make sure to follow the operation steps exactly as described in XENTRY Diagnosis. Read More »

    • TSB #OTA-24240201

      Date Announced:
      FEB 09, 2024
      NHTSA ID:
      #10251176

      Mercedes-Benz AG (??A???A???A?MBAG??A???A???A?), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY20-23 A-Class, C-Class, CLA, CLS, E-Class, GLA, GLB, GLC, GLE, GLS, AMG GT, S-Class (177, 205, 118, 257, 213, ... Read More »

    • TSB #NCU -MBUX SW OTA

      Date Announced:
      OCT 20, 2023
      NHTSA ID:
      #10244748

      Mercedes-Benz AG (??A?A?MBAG??A?A?), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY21-23 C-Class, EQS, S-Class, SL, EQE, GLC (206, 296, 297, 223, 232, 294, 295, 254 platform) vehicles, the head unit software ... Read More »

    • TSB #NCU-HU SW Update

      Date Announced:
      AUG 28, 2023
      NHTSA ID:
      #10241527

      Mercedes-Benz AG (a??MBAGa??), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2018-2023 C-Class, EQE, EQE SUV, EQS, EQS SUV, GLC, GLE and S-Class (206, 295, 294, 297, 296, 254, 167 and 223 platform) ... Read More »

    • TSB #NCU-2023060003

      Date Announced:
      JUN 15, 2023
      NHTSA ID:
      #10238437

      Mercedes-Benz AG (a??MBAGa??), the manufacturer of Mercedes-Benz, has determined that on certain Model Year (a??MYa??) 2016 a?? 2021 C-Class (205 platform), E-Class (213 platform) and GLC (253 platform) vehicles, the air conditioning ... Read More »

    • TSB #LI46.15-P-063353

      Date Announced:
      JUL 14, 2022
      NHTSA ID:
      #10217157

      Complaint Height adjustment of electric steering column adjustment jammed in the top/bottom adjustment position (e.g. with Easy Entry function). Cause Height adjustment moves to the top/bottom limit stop and jams. 1. Read More »

    • TSB #LI2700P073106

      Date Announced:
      MAY 25, 2021
      NHTSA ID:
      #10202530

      Remote start causing CEL and U012600. Read More »

    ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY:THERMAL MANAGEMENT:SENSOR/THERMOSTAT

    • TSB #LI20.10-P-072886

      Date Announced:
      APR 20, 2021
      NHTSA ID:
      #10195221

      with engine M17x the ME Control Unit: "The Coolant Temperature is Below the Specified Temperature" Read More »

    ELECTRICAL SYSTEM:PROPULSION SYSTEM:FUEL CELL

    • TSB #LI72.20-P-075746

      Date Announced:
      MAR 11, 2024
      NHTSA ID:
      #10252777

      Tailgate opens unintentionally. Accidental or unnoticed activation of the button to open the tailgate on the vehicle key. E.g. when stored in trouser pocket, handbag etc. Read More »

    EXTERIOR LIGHTING:HEADLIGHTS

    VISIBILITY

    • TSB #NCU-2023060003

      Date Announced:
      JUN 15, 2023
      NHTSA ID:
      #10238437

      Mercedes-Benz AG (a??MBAGa??), the manufacturer of Mercedes-Benz, has determined that on certain Model Year (a??MYa??) 2016 a?? 2021 C-Class (205 platform), E-Class (213 platform) and GLC (253 platform) vehicles, the air conditioning ... Read More »

    VISIBILITY:SUN/MOON ROOF ASSEMBLY

    • TSB #LI77.21-P-075807

      Date Announced:
      OCT 02, 2023
      NHTSA ID:
      #10244745

      Sliding sunroof panel of panoramic sliding sunroof reversed (temporarily, once, multiple times) during closing process without entrapment event. Sensitive parameterization of the automatic reversing function of the panoramic roof. Read More »

    AIR BAGS

    • TSB #LI07.61-P-072135

      Date Announced:
      MAR 02, 2021
      NHTSA ID:
      #10194142

      When accelerating at low speeds (slow roll at < 9 mph, 2nd gear), the engine limp-home mode may be triggered which in turn limits the amount of power available. Read More »

    STRUCTURE

    • TSB #LI72.20-P-075746

      Date Announced:
      MAR 11, 2024
      NHTSA ID:
      #10252777

      Tailgate opens unintentionally. Accidental or unnoticed activation of the button to open the tailgate on the vehicle key. E.g. when stored in trouser pocket, handbag etc. Read More »

    • TSB #LI77.21-P-075807

      Date Announced:
      OCT 02, 2023
      NHTSA ID:
      #10244745

      Sliding sunroof panel of panoramic sliding sunroof reversed (temporarily, once, multiple times) during closing process without entrapment event. Sensitive parameterization of the automatic reversing function of the panoramic roof. Read More »

    • TSB #LI72.00-P-075481

      Date Announced:
      NOV 17, 2022
      NHTSA ID:
      #10227145

      Complaint Staining on door trim strips and top and bottom trim elements on rear side windows Cause Damage to protective coating (due to poor original optimization of coating) of door beltline trim strips, door upper trim strips and ... Read More »

    • TSB #LI72.00-P-075481

      Date Announced:
      OCT 24, 2022
      NHTSA ID:
      #10225820

      Complaint Staining on door trim strips and top and bottom trim elements on rear side windows Cause Damage to protective coating of door beltline trim strips, door upper trim strips and side window trim element due to strong alkaline ... Read More »

    STRUCTURE:BODY:TAILGATE

    STRUCTURE:BODY:HATCHBACK/LIFTGATE

    STRUCTURE:BODY:TRUNK LID

    • TSB #LI72.20-P-075746

      Date Announced:
      MAR 11, 2024
      NHTSA ID:
      #10252777

      Tailgate opens unintentionally. Accidental or unnoticed activation of the button to open the tailgate on the vehicle key. E.g. when stored in trouser pocket, handbag etc. Read More »

    • TSB #LI7220P056907

      Date Announced:
      JUL 30, 2013
      NHTSA ID:
      #10205214

      Noises when opening and closing automatic liftgate. Read More »

    STRUCTURE:BODY:HOOD

    • TSB #LI72.20-P-075746

      Date Announced:
      MAR 11, 2024
      NHTSA ID:
      #10252777

      Tailgate opens unintentionally. Accidental or unnoticed activation of the button to open the tailgate on the vehicle key. E.g. when stored in trouser pocket, handbag etc. Read More »

    LATCHES/LOCKS/LINKAGES

    • TSB #LI72.20-P-075746

      Date Announced:
      JAN 05, 2023
      NHTSA ID:
      #10231032

      Complaint Tailgate opens unintentionally. Cause Accidental or unnoticed activation of the button to open the tailgate on the vehicle key. E.g. when stored in trouser pocket, handbag etc. Read More »

    WHEELS

    • TSB #LI40.15-P-074659

      Date Announced:
      APR 01, 2022
      NHTSA ID:
      #10210926

      Complaint Fault message (yellow) in instrument cluster and TPM warning lamp. Individual or all tire pressure sensors are not recognized. Tire pressure monitoring system nonfunctional / temporarily unavailable. Read More »

    SEATS

    • TSB #LI91.18-P-077075

      Date Announced:
      DEC 04, 2023
      NHTSA ID:
      #10248162

      Crease formation on genuine leather seat covers in vehicles with low mileage ??A?A? Objects left on the seats for extended periods of time (pressure marks). ??A?A? Objects wedged between the seat backrest and seat cushion (e.g. Read More »

    • TSB #LI91.30-P-073902

      Date Announced:
      JAN 04, 2022
      NHTSA ID:
      #10207205

      Complaint Seat heating on driver's seat and front passenger seat nonfunctional. The LEDs on the switches for the seat heating illuminate, but the seat heating mats do not get warm. Cause Faulty SCN coding of rear SAM. Read More »

    SEATS:FRONT ASSEMBLY:SEAT HEATER/COOLER

    • TSB #LI91.30-P-073902

      Date Announced:
      JAN 04, 2022
      NHTSA ID:
      #10207205

      Complaint Seat heating on driver's seat and front passenger seat nonfunctional. The LEDs on the switches for the seat heating illuminate, but the seat heating mats do not get warm. Cause Faulty SCN coding of rear SAM. Read More »

    ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC)

    • TSB #LI07.61-P-072135

      Date Announced:
      MAR 02, 2021
      NHTSA ID:
      #10194142

      When accelerating at low speeds (slow roll at < 9 mph, 2nd gear), the engine limp-home mode may be triggered which in turn limits the amount of power available. Read More »

    BACK OVER PREVENTION

    • TSB #LI82.27-P-072402

      Date Announced:
      FEB 22, 2021
      NHTSA ID:
      #10189406

      If the exhaust flap is operated or the drive program is changed within 10 seconds of the engine being started, an audible humming noise may emit from the speakers. New sound amp (N40/3) software is currently in development. Read More »

    COMMUNICATION

    • TSB #LI82.85-P-069381

      Date Announced:
      JAN 04, 2021
      NHTSA ID:
      #10187785

      The following complaints may be noted by the customer: - The MBUX multimedia system (A26/17) starts route guidance without user input and does not provide any audio notification. Read More »

    COMMUNICATION:MANUFACTURER TELEMATICS

    • TSB #LI82.85-P-075375

      Date Announced:
      JUN 09, 2023
      NHTSA ID:
      #10238424

      In the MBUX weather app, the temperature is displayed in the wrong unit (Fahrenheit instead of A?C, or vice versa). Read More »

    EQUIPMENT

    • TSB #LI82.85-P-076799

      Date Announced:
      AUG 18, 2023
      NHTSA ID:
      #10241790

      The Mercedes me connect services cannot be activated. The remote status data does not update. Error in N112/9 - control unit for telematics services (HERMES). Read More »

    • TSB #LI46.15-P-063353

      Date Announced:
      JUL 14, 2022
      NHTSA ID:
      #10217157

      Complaint Height adjustment of electric steering column adjustment jammed in the top/bottom adjustment position (e.g. with Easy Entry function). Cause Height adjustment moves to the top/bottom limit stop and jams. 1. Read More »

    • TSB #LI32.25-P-066246

      Date Announced:
      JUL 11, 2022
      NHTSA ID:
      #10217154

      Complaint Thumping noise on rear axle shock absorber on rough road. Cause Until now the rear axle shock absorber support bushing was only available together with the rear axle shock absorber as a replacement part. Read More »

    • TSB #SC-2021070006

      Date Announced:
      JUL 07, 2022
      NHTSA ID:
      #10217148

      Mercedes-Benz AG (a??MBAGa??), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year 2021 CLA (118 platform), GLE/GLS (167 platform), C-Class (205 platform), E-Class (213 platform), GLA (247 platform), GLC ... Read More »

    • TSB #SC-2022010008

      Date Announced:
      FEB 04, 2022
      NHTSA ID:
      #10208671

      Mercedes-Benz AG (a??MBAGa??), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2021-22 A-Class (177 platform), CLA-Class (118 platform), CLS-Class (257 platform), E-Class (213 and 238 platform), GLA-Class, ... Read More »

    • TSB #LI2700P073106

      Date Announced:
      MAY 25, 2021
      NHTSA ID:
      #10202530

      Remote start causing CEL and U012600. Read More »

    • TSB #LI54.70-P-068094

      Date Announced:
      MAR 29, 2021
      NHTSA ID:
      #10191289

      Message (yellow) in IC "Active Brake Assist currently restricted, see operator's manual, Remedy: Deactivate transport mode and drive vehicle for approx 6mi. Read More »

    • TSB #LI83.20-P-072178

      Date Announced:
      JAN 04, 2021
      NHTSA ID:
      #10187784

      The customer complains that when the ignition is switched on, pulsating buzzing noises which fluctuate in volume can be heard coming from the area of the instrument panel or the driver's footwell. Read More »

    • TSB #LI82.85-P-069381

      Date Announced:
      JAN 04, 2021
      NHTSA ID:
      #10187785

      The following complaints may be noted by the customer: - The MBUX multimedia system (A26/17) starts route guidance without user input and does not provide any audio notification. Read More »

    EQUIPMENT:ELECTRICAL

    • TSB #LI8270P071024

      Date Announced:
      AUG 27, 2021
      NHTSA ID:
      #10205803

      The mobile phone address book may not be transferred completely to the multimedia system COMAND, Audio 20, or MBUX. Read More »

    • TSB #LI8285P073387Ver

      Date Announced:
      AUG 09, 2021
      NHTSA ID:
      #10205811

      The customer may note that the Dashcam feature is inoperable with one of the following complaints. Read More »

    • TSB #LI8285P073387Ver

      Date Announced:
      AUG 03, 2021
      NHTSA ID:
      #10205810

      The customer may note that the Dashcam feature is inoperable with one of the following complaints. Read More »

    • TSB #LI8285P073387Ver

      Date Announced:
      AUG 02, 2021
      NHTSA ID:
      #10205809

      The customer may note that the Dashcam feature is inoperable with one of the following complaints: Read More »

    • TSB #LI8285P0602587

      Date Announced:
      AUG 29, 2016
      NHTSA ID:
      #10205240

      Reset the customer-specific data and perform a software update of the AUDIO20 control unit. Read More »

    EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.

    • TSB #LI82.60-P-077553

      Date Announced:
      FEB 23, 2024
      NHTSA ID:
      #10251356

      The radio station favorites list is no longer present after bus idle Saving process during download Perform software update in control unit HU6 in the head unit (A26/17) to version E871.1 (A 247 904 53 00). Read More »

    • TSB #LI8260P0646761

      Date Announced:
      AUG 15, 2016
      NHTSA ID:
      #10205230

      CD/DVD No longer ejected or drawn in. Read More »

    EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM)

    • TSB # LI82.85-P-06996

      Date Announced:
      DEC 02, 2021
      NHTSA ID:
      #10206067

      MBUX multimedia system: Map data does not match with your system/the navigation system cannot be activated Read More »

    • TSB #LI8285P069961

      Date Announced:
      AUG 30, 2021
      NHTSA ID:
      #10205806

      Upon selecting navigation, the central display may show the following message: "Map data does not match with your system. Please insert a medium containing the corresponding map data". the navigation menu cannot be opened. Read More »

    • TSB #LI8285P0633424

      Date Announced:
      NOV 29, 2016
      NHTSA ID:
      #10205242

      Navigation system permanently displays "Activating". Read More »

    • TSB #LI8285P0633423

      Date Announced:
      AUG 25, 2016
      NHTSA ID:
      #10205241

      Navigation system permanently displays "Activating". Read More »

    • TSB #LI8285P0647651

      Date Announced:
      AUG 25, 2016
      NHTSA ID:
      #10205247

      Traffic information service and posibly the voice control, nonfunctional after navigation software update. Read More »

    EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE

    • TSB #LI82.85-P-075375

      Date Announced:
      JUN 09, 2023
      NHTSA ID:
      #10238424

      In the MBUX weather app, the temperature is displayed in the wrong unit (Fahrenheit instead of A?C, or vice versa). Read More »

    EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

    • TSB #P-SC-2022030014

      Date Announced:
      MAY 20, 2022
      NHTSA ID:
      #10213058

      Mercedes-Benz AG (a??MBAGa??), the manufacturer of Mercedes-Benz, has determined that on certain Model Year (a??MYa??) 2021 CLA-Class, GLA-Class, GLE-Class, GLS-Class, A-Class, C-Class, E-Class, GLB-Class, CLS-Class, and AMG GT ... Read More »

    • TSB #NCU2021080002

      Date Announced:
      OCT 29, 2021
      NHTSA ID:
      #10205416

      NEW SERVICE CAMPAIGN LAUNCH INFORMATION. Read More »

    • TSB #NCU2021070013

      Date Announced:
      OCT 22, 2021
      NHTSA ID:
      #10205414

      NEW SERVICE CAMPAIGN LAUNCH INFORMATION. Read More »

    • TSB #NCU2021070018

      Date Announced:
      OCT 01, 2021
      NHTSA ID:
      #10205415

      NEW SERVICE CAMPAIGN LAUNCH INFORMATION. Read More »

    EQUIPMENT ADAPTIVE/MOBILITY

    • TSB #SC-2021070006

      Date Announced:
      JUL 07, 2022
      NHTSA ID:
      #10217148

      Mercedes-Benz AG (a??MBAGa??), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year 2021 CLA (118 platform), GLE/GLS (167 platform), C-Class (205 platform), E-Class (213 platform), GLA (247 platform), GLC ... Read More »

    • TSB #LI20.10-P-072886

      Date Announced:
      APR 20, 2021
      NHTSA ID:
      #10195221

      with engine M17x the ME Control Unit: "The Coolant Temperature is Below the Specified Temperature" Read More »

    EQUIPMENT:APPLIANCE:TV/RADIO/SPEAKERS

    • TSB #LI82.85-P-071394

      Date Announced:
      FEB 24, 2021
      NHTSA ID:
      #10189407

      In XENTRY diagnosis, the message "MBUX multimedia system control unit is defective (hard drive, internal fault)" appears while attempting to communicate with the MBUX multimedia system (A26/17) Read More »

    UNKNOWN OR OTHER