2020 Mercedes-Benz C300
TSBs (Technical Service Bulletins)
Technical Service Bulletins (TSBs) for the 2020 C300 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.
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TSB #LI46.10-P-077314
Noises in the steering column area when steering. Under analysis. Check which area of the steering column the noises occur in. Read More »
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TSB #LI46.10-P-077313
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 »
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TSB #LI46.15-P-071669
Complaint Loads induced at the steering wheel through pushing and pulling actions may cause creaking and cracking noises in the mechanical steering column. Read More »
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TSB #LI46.15-P-063353
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 »
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TSB #LI46.15-P-063353
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 »
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TSB #LI46.11-P-071594
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 »
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TSB #LI46.11-P-071594
Steering wheel heater and/or Distronic function limited Read More »
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TSB #LI46.11-P-071594
Steering wheel heater and/or Distronic function limited Read More »
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TSB #LI32.25-P-076956
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 »
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TSB #LI32.25-P-066246
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 »
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TSB #LI32.25-P-061137
Clunking noises on rough roads. especially during short strokes of the damper. Attachments File Description MRA rear noise check. Read More »
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TSB #LI32.25-P-076956
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 »
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TSB #LI54.30-P-070482
The check engine indicator light in the instrument cluster may be illuminated with one of the following fault codes: P261029, P02FF85, or P02FF02 stored in the engine control unit (N3/10). Read More »
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TSB #LI54.30-P-070482
Check engine indicator light active and fault code P261029/P02FF85/P02FF02 stored in engine control unit Read More »
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TSB #LI07.70-P-070763
Fault code P06DA00 is found current or stored in engine control unit. Check engine light may be activated. Read More »
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TSB #ELW -Intake Line
In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA (a??MBUSAa??) is extending the coverage for the intake line assembly on your ... Read More »
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TSB #LI09.00-P-074093
"MY15+ M278 and M157 Equipped Vehicles with Fault Code ""P023400 a?? Boost Pressure is Too High"" " Read More »
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TSB #LI2700P073106
Remote start causing CEL and U012600. Read More »
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TSB #Launch NCU 20210
Mercedes-Benz AG (?MBAG?), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2020 C-Class (205) and GLE-Class (167) vehicles, the mixing ratio of coolant to antifreeze may not meet production specifications. Read More »
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TSB #LI1830P0597123
Gasket may settle causing a slight oil leak. Read More »
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TSB #LI20.10-P-072886
with engine M17x the ME Control Unit: "The Coolant Temperature is Below the Specified Temperature" Read More »
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TSB #LI20.20-P-073274
Coolant warning in instrument cluster - Leak in coolant line Read More »
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TSB #LI8860P073470
Fuel filler flap opens slowly/switch flashes/tank is bleeding instrument cluster warning Read More »
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TSB #LI8860P073470
Fuel filler flap opens slowly/switch flashes/tank is bleeding instrument cluster warning Read More »
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TSB #LI18.40-P-070746
Message in the Instrument Cluster "Refill 1L Oil at the Next Fuel Stop" Read More »
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TSB #LI18.40-P-070746
Message in the Instrument Cluster "Refill 1L Oil at the Next Fuel Stop" Read More »
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TSB #PSC2021060013
Update Coding of Powertrain Control Unit. Read More »
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TSB #LI27.50-P-071658
Harsh engagement when changing gear range from P to D or R Read More »
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TSB #LI27.00-P-060741
Shifting complaints and transmission fault codes in vehicles with transmission 725.0 Read More »
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TSB #LI54.30-P-070482
The check engine indicator light in the instrument cluster may be illuminated with one of the following fault codes: P261029, P02FF85, or P02FF02 stored in the engine control unit (N3/10). Read More »
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TSB #LI2700P0647671
Intial startup not possible after replacement of transmisson 725.0 or of electrohydraulic controller unit. Read More »
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TSB #NCU-2020080006
Check seal bellows at wheel carrier supporting joint of left and right rear axle, replace if necessary Read More »
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TSB #OTA-24240201
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 »
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TSB #NCU-OTAcommNoMMC
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 »
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TSB #CL-CommMod
Dear Mercedes-Benz Owner: On behalf of Mercedes-Benz USA, LLC (MBUSA), thank you for being a part of the Mercedes-Benz family. We hope that you??A?A?re enjoying your vehicle. Read More »
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TSB #OTA-Comm Mod SW
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 »
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TSB #LI82.85-P-076800
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 »
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TSB #NCU-HU SW Update
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 »
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TSB #NCU-2023060003
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 »
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TSB #LI72.20-P-075746
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 »
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TSB #LI82.85-P-074970
Complaint Customer may have one or more of the following complaints: a?? Vehicle location is shown incorrectly in the Navigation Display a?? Navigation destination search is not possible a?? Street names are not shown in Navigation ... Read More »
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TSB #NCU-2022060008
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 »
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TSB #LI82.85-P-074970
Complaint Customer may have one or more of the following complaints: a?? Vehicle location is shown incorrectly in the Navigation Display a?? Navigation destination search is not possible a?? Street names are not shown in Navigation ... Read More »
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TSB #LI54.10-P-071499
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 »
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TSB #LI68.05-P-060306
Complaint The garage door hand transmitter cannot be initialized with the integrated garage door opener in the inside rearview mirror. Cause 1. Read More »
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TSB #LI68.05-P-060307
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 »
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TSB #LI91.30-P-073902
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 »
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TSB # LI54.10-P-07407
Eco start/stop nonfunctional due to 12V battery Read More »
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TSB #LI08.00-P-072749
For plug in hybrid and electric variants: Complaints about the electric range Read More »
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TSB #LI80.57-P-072708
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 »
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TSB #LI42.47-P-069817
After ignition ON, the following message is shown on the instrument cluster: - "Unavailable! - ESP - Service Required" Read More »
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TSB #LI27.00-P-072627
Fault in 12 V interlock circuit Read More »
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TSB #LI27.35-P-072629
When ordering the electrohydraulic controller unit (EHS) using the part number stated on the EHS, the wrong parts may be ordered. Read More »
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TSB #LI54.30-P-072145
NTG5.5: Incorrect time shown on instrument cluster, COMAND display, and analog clock Read More »
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TSB #LI82.85-P-070565
NTG5.5 Audio 20: Static noise heard after opening the door Read More »
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TSB #LI82.85-P-076800
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 »
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TSB #LI54.30-P-072145
NTG5.5: Incorrect time shown on instrument cluster, COMAND display, and analog clock Read More »
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TSB #LI54.30-P-070482
The check engine indicator light in the instrument cluster may be illuminated with one of the following fault codes: P261029, P02FF85, or P02FF02 stored in the engine control unit (N3/10). Read More »
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TSB #LI8370P0644803
High voltage battery warning message in instrument cluster. Read More »
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TSB #OTA-24240201
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 »
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TSB #NCU-HU SW Update
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 »
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TSB #NCU-2023060003
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 »
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TSB #LI46.15-P-063353
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 »
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TSB #LI2700P073106
Remote start causing CEL and U012600. Read More »
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TSB #LI18.40-P-070746
Message in the Instrument Cluster "Refill 1L Oil at the Next Fuel Stop" Read More »
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TSB #LI54.30-P-070482
The check engine indicator light in the instrument cluster may be illuminated with one of the following fault codes: P261029, P02FF85, or P02FF02 stored in the engine control unit (N3/10). Read More »
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TSB #LI7240P056909
Window lifter and outside mirror on passenger side malfunction after replacement of door control unit. Read More »
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TSB #LI20.10-P-072886
with engine M17x the ME Control Unit: "The Coolant Temperature is Below the Specified Temperature" Read More »
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TSB #LI72.20-P-075746
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 »
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TSB #LI82.10-P-063239
Headlamps fogged Read More »
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TSB #LI8210P0644042
Headlamp fog. Read More »
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TSB #NCU-2023060003
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 »
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TSB #LI83.30-P-071494
Air Conditioning Intermittently Does Not Cool Read More »
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TSB #LI7240P056909
Window lifter and outside mirror on passenger side malfunction after replacement of door control unit. Read More »
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TSB #LI83.30-P-071494
Air Conditioning Intermittently Does Not Cool Read More »
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TSB #LI20.20-P-073274
Coolant warning in instrument cluster - Leak in coolant line Read More »
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TSB #LI72.20-P-075746
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 »
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TSB #LI72.00-P-075743
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. Remedy 1. Read More »
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TSB #LI72.20-P-075746
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 »
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TSB #LI72.20-P-075746
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 »
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TSB #LI72.20-P-075746
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 »
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TSB #LI7240P056909
Window lifter and outside mirror on passenger side malfunction after replacement of door control unit. Read More »
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TSB #P-SC-2020020001
Information Label on Tire Sealant Read More »
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TSB #NCU-2020080006
Check seal bellows at wheel carrier supporting joint of left and right rear axle, replace if necessary Read More »
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TSB #LI91.18-P-077075
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 »
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TSB #LI91.30-P-073902
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 »
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TSB #LI91.30-P-073902
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 »
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TSB #LI82.27-P-072402
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 »
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TSB #LI82.20-P-073063
Complaint The touchpad dimming function does not work and the search lighting is either at maximum brightness or fully off (dependent upon dimming signal). Read More »
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TSB #LI8220P073063
Touch pad: Search lighting does not dim or does not turn on. Read More »
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TSB #LI46.15-P-063353
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 »
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TSB #LI32.25-P-066246
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 »
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TSB #LI82.85-P-074970
Complaint Customer may have one or more of the following complaints: a?? Vehicle location is shown incorrectly in the Navigation Display a?? Navigation destination search is not possible a?? Street names are not shown in Navigation ... Read More »
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TSB #LI32.25-P-061137
Clunking noises on rough roads. especially during short strokes of the damper. Attachments File Description MRA rear noise check. Read More »
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TSB #LI20.20-P-073274
Coolant warning in instrument cluster - Leak in coolant line Read More »
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TSB #LI82.85-P-068846
"Free browsing, Internet access via Wi-Fi hotspot and Internet radio nonfunctional" Read More »
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TSB #LI2700P073106
Remote start causing CEL and U012600. Read More »
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TSB #LI54.70-P-068094
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 »
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TSB #LI54.30-P-070482
The check engine indicator light in the instrument cluster may be illuminated with one of the following fault codes: P261029, P02FF85, or P02FF02 stored in the engine control unit (N3/10). Read More »
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TSB #LI82.85-P-070565
NTG5.5 Audio 20: Static noise heard after opening the door Read More »
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TSB #LI82.85-P-071023
NTG5.5 Audio 20 with codes 355 and 357: Vehicle positioning inaccurate / implausible, route guidance not possible Read More »
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TSB #LI72.20-P-070556
EASY-Pack liftgate does not fully open Read More »
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TSB #LI9110P0633475
Map pocket on front seat backrest trim does not close. Read More »
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TSB #LI8285P070107
The Weather App will not populate local weather data based on current vehicle position. Read More »
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TSB #LI8200P073331
Intermittently after bus sleep the lower control panel LCP and upper control panel UCP may be panel UCP may be inoperable. Read More »
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TSB #LI82.70-P-071024
The mobile phone address book is not transferred completely to the multimedia system (COMAND or MBUX). In some cases, the call list shows just the telephone numbers but no names. Read More »
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TSB #LI8262P0634113
Disturbed Antenna Signal. Read More »
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TSB #LI8285P0602587
Reset the customer-specific data and perform a software update of the AUDIO20 control unit. Read More »
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TSB #LI82.85-P-068846
"Free browsing, Internet access via Wi-Fi hotspot and Internet radio nonfunctional" Read More »
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TSB #LI8260P0646761
CD/DVD No longer ejected or drawn in. Read More »
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TSB #LI82.85-P-074970
Complaint Customer may have one or more of the following complaints: a?? Vehicle location is shown incorrectly in the Navigation Display a?? Navigation destination search is not possible a?? Street names are not shown in Navigation ... Read More »
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TSB #LI8285P070107
The Weather App will not populate local weather data based on current vehicle position. Read More »
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TSB #LI8285P0633424
Navigation system permanently displays "Activating". Read More »
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TSB #LI8285P0633423
Navigation system permanently displays "Activating". Read More »
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TSB #LI8285P0647651
Traffic information service and posibly the voice control, nonfunctional after navigation software update. Read More »
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TSB #LI7240P056909
Window lifter and outside mirror on passenger side malfunction after replacement of door control unit. Read More »
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TSB #P-SC-2020020001
Information Label on Tire Sealant Read More »
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TSB #NCU-2020060021
The operator's manual for the above vehicles does not comply with current specifications. "Daimler AG" may be documented as the manufacturer in the operator's manual. The new manufacturer is "Mercedes-Benz AG. Read More »
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TSB #LI82.85-P-068846
"Free browsing, Internet access via Wi-Fi hotspot and Internet radio nonfunctional" Read More »
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TSB #LI20.10-P-072886
with engine M17x the ME Control Unit: "The Coolant Temperature is Below the Specified Temperature" Read More »
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TSB #LI83.30-P-071494
Air Conditioning Intermittently Does Not Cool Read More »
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TSB #LI2700P0647671
Intial startup not possible after replacement of transmisson 725.0 or of electrohydraulic controller unit. Read More »
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TSB #LI1830P0597123
Gasket may settle causing a slight oil leak. Read More »