Technical Service Bulletins (TSBs) for the 2015 C400 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 #LI46.15-P-071669

      Date Announced:
      MAR 01, 2023
      NHTSA ID:
      #10233783

      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 »

    • 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 #LI46-35P059241

      Date Announced:
      JUN 20, 2014
      NHTSA ID:
      #10056472

      XENTRY (MERCEDES): AFTER ENGINE HAS STARTED, SEVERAL ISSUES OCCURS, AN ACOUSTIC WARNING SOUNDS IS HEARD, THE INSTRUMENT CLUSTER DISPLAYS WARNING MESSAGE POWER STEERING MALFUNCTION, SERVICE REQUIRED. STEERING SYSTEM IS SLUGGISH. Read More »

    STEERING:ELECTRIC POWER ASSIST SYSTEM

    • TSB #LI46.35-P-059989

      Date Announced:
      OCT 16, 2014
      NHTSA ID:
      #10135638

      Red display message in instrument cluster "Power Steering Malfunction - See Owner's Manual" Read More »

    SUSPENSION

    • 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

    • TSB #LI32.25-P-061137

      Date Announced:
      MAR 24, 2015
      NHTSA ID:
      #10135599

      Clunking noise from front axle suspension strut or rear axle shock absorber on short strokes of the damper Read More »

    SUSPENSION:FRONT:MACPHERSON STRUT

    • TSB #LI32.25-P-061137

      Date Announced:
      MAR 24, 2015
      NHTSA ID:
      #10135599

      Clunking noise from front axle suspension strut or rear axle shock absorber on short strokes of the damper Read More »

    SUSPENSION:REAR:SHOCK ABSORBER

    • TSB #LI32.25-P-061137

      Date Announced:
      MAR 24, 2015
      NHTSA ID:
      #10135599

      Clunking noise from front axle suspension strut or rear axle shock absorber on short strokes of the damper Read More »

    SERVICE BRAKES, HYDRAULIC

    • TSB #LI42.47-P-067502

      Date Announced:
      DEC 09, 2020
      NHTSA ID:
      #10186135

      If the customer brakes sharply from a speed of > 30mph, without ABS intervention, there is a single cracking noise from the area of the ESP hydraulic unit Read More »

    ENGINE (PWS)

    • TSB #LI05 20-P-067123

      Date Announced:
      OCT 09, 2017
      NHTSA ID:
      #10158329

      Oil in engine wiring harness Read More »

    • TSB #LI07-70P061851

      Date Announced:
      JUL 27, 2015
      NHTSA ID:
      #10058561

      XENTRY (MERCEDES): VEHICLE SHUTS DOWN AT 5 MPH BUT ENGINE ABLE TO BE RESTARTED VIA ECO START STOP DUE TO MISMATCHED LEVELS OF SOFTWARE. MODEL 2014-15 217, 222. *PE Read More »

    • TSB #LI03-10P060916

      Date Announced:
      JUL 01, 2015
      NHTSA ID:
      #10058545

      XENTRY (DAIMLER): DUE TO UNFAVORABLE TOLERANCE OF PISTON WRIST PIN, RESULTING IN KNOCKING, CLATTERING/RATTLING NOISES, CAUSING AN ENLARGE END FLOAT CONNECTING ROD IN PISTON, FROM CRANK ASSEMBLY OF ENGINE WHEN COLD. Read More »

    • TSB #LI54-18-P-057927

      Date Announced:
      JUN 04, 2015
      NHTSA ID:
      #10058548

      XENTRY (DAIMLER): STORED IN ENGINE CONTROL UNIT ARE FAULTS RELATING TO THROTTLE VALVE ACTUATOR AND/OR OXYGEN SENSOR DUE TO OCCASIONAL TRANSITION RESISTANCE AT CONTACTS, CAUSING ENGINE DIAGNOSIS WARNING LAMP TO BE INACTIVE. MODEL ALL. Read More »

    ENGINE AND ENGINE COOLING

    • TSB #ELW -Intake Line

      Date Announced:
      SEP 22, 2023
      NHTSA ID:
      #10243565

      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 »

    • TSB #SC-202203005

      Date Announced:
      MAR 11, 2022
      NHTSA ID:
      #10209874

      Mercedes-Benz AG (a??MBAGa??), the manufacturer of Mercedes-Benz, has determined that on certain MY 2015-2018 C-Class and GLC-Class (205 and 253 platform) vehicles, the software for the powertrain control unit may not correspond to the ... 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 #LI4245P073405

      Date Announced:
      AUG 02, 2021
      NHTSA ID:
      #10205790

      After starting the engine, the instrument cluster shows the "EBD not available, diagnosis/test stand" message in yellow. Read More »

    • TSB #P-SC-2019050006

      Date Announced:
      MAY 28, 2019
      NHTSA ID:
      #10162206

      Check coolant hose from expansion reservoir to cooler and replace if necessary Read More »

    ENGINE AND ENGINE COOLING:ENGINE:HARD PARTS INTERNAL/MECHANICAL

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

    HYBRID PROPULSION SYSTEM

    POWER TRAIN:AUTOMATIC TRANSMISSION

    • TSB #LI2700P0647671

      Date Announced:
      AUG 26, 2016
      NHTSA ID:
      #10205156

      Intial startup not possible after replacement of transmisson 725.0 or of electrohydraulic controller unit. Read More »

    • TSB #LI27-00-P-060097

      Date Announced:
      JUL 07, 2015
      NHTSA ID:
      #10058546

      XENTRY (DAIMLER): AFTER KEY CYCLE, VEHICLE IN LIMP HOME MODE, RETURNS TO NORMAL OPERATION DUE TO BEING STUCK ON CLUTCH PACK OR THE SHIFT VALVE FAULT. MODEL ALL. NO YEARS LISTED. *PE Read More »

    ELECTRICAL SYSTEM

    • TSB #LI82.85-P-074970

      Date Announced:
      JUL 07, 2022
      NHTSA ID:
      #10217162

      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 »

    • TSB #SC-202203005

      Date Announced:
      MAR 11, 2022
      NHTSA ID:
      #10209874

      Mercedes-Benz AG (a??MBAGa??), the manufacturer of Mercedes-Benz, has determined that on certain MY 2015-2018 C-Class and GLC-Class (205 and 253 platform) vehicles, the software for the powertrain control unit may not correspond to the ... 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 #2017030004

      Date Announced:
      JAN 14, 2021
      NHTSA ID:
      #10187796

      Replace 3rd brake lamp, remove soft top compartment cover to access. Read More »

    • TSB #LI54.30-P-072145

      Date Announced:
      DEC 10, 2020
      NHTSA ID:
      #10186141

      NTG5.5: Incorrect time shown on instrument cluster, COMAND display, and analog clock Read More »

    • TSB #LI82.95-P-054406

      Date Announced:
      AUG 28, 2013
      NHTSA ID:
      #10062335

      SUMMARY TO BE PROVIDED ON A FUTURE DATE. Read More »

    • TSB #LI82.85-P-055695

      Date Announced:
      JUL 08, 2013
      NHTSA ID:
      #10167563

      The COMAND unit does not start or the COMAND display remains dark. The COMAND unit cannot be operated. Note: The problem disappears after a lengthy idle period (>6h) or after interrupting the power supply (circuit 30). Read More »

    ELECTRICAL SYSTEM:IGNITION

    • TSB #LI42.45-P-058979

      Date Announced:
      APR 01, 2015
      NHTSA ID:
      #10058289

      XENTRY: BULLETIN INFORMATION REGARDING COMPLAINT OF THE ESP WARNING LIGHT APPEARING WHILE DRIVING , LIGHT DISAPPEARS WHEN IGNITION IS RESTARTED. *LJ Read More »

    ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL

    • TSB #LI4245P073405

      Date Announced:
      AUG 02, 2021
      NHTSA ID:
      #10205790

      After starting the engine, the instrument cluster shows the "EBD not available, diagnosis/test stand" message in yellow. Read More »

    • TSB #LI54.30-P-072145

      Date Announced:
      DEC 10, 2020
      NHTSA ID:
      #10186141

      NTG5.5: Incorrect time shown on instrument cluster, COMAND display, and analog clock Read More »

    • TSB #LI83-70-P-064480

      Date Announced:
      MAY 22, 2019
      NHTSA ID:
      #10162197

      "High-voltage battery warning message" in instrument cluster Read More »

    • TSB #C1A-15-06-01

      Date Announced:
      JUN 01, 2015
      NHTSA ID:
      #10058525

      MERCEDES: INFORMATION PROCEDURES ON THE REPAIR AND REPLACEMENT OF THE INSTRUMENT PANEL IN DASHBOARD OF SOME VEHICLES. MODEL 2015 205 (C CLASS). *PE Read More »

    • TSB #LI46-35P059241

      Date Announced:
      JUN 20, 2014
      NHTSA ID:
      #10056472

      XENTRY (MERCEDES): AFTER ENGINE HAS STARTED, SEVERAL ISSUES OCCURS, AN ACOUSTIC WARNING SOUNDS IS HEARD, THE INSTRUMENT CLUSTER DISPLAYS WARNING MESSAGE POWER STEERING MALFUNCTION, SERVICE REQUIRED. STEERING SYSTEM IS SLUGGISH. Read More »

    ELECTRICAL SYSTEM:SOFTWARE

    • 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 #Launch NCU - 202

      Date Announced:
      JAN 07, 2021
      NHTSA ID:
      #10187793

      Mercedes-Benz AG (?MBAG?), the manufacturer of Mercedes-Benz, has determined that on certain Model Year (?MY?) 2013-2017 B-Class, C-Class, CLA-Class, CLS-Class, E-Class, G-Class, GL-Class, GLA-Class, GLC-Class, GLE-Class, GLK-Class, ... Read More »

    • TSB #LI82-85-P-069789

      Date Announced:
      MAY 20, 2019
      NHTSA ID:
      #10162185

      NTG 5.5 head unit - Browser shows "Fault during authentication" message Read More »

    • TSB #LI07-70P061851

      Date Announced:
      JUL 27, 2015
      NHTSA ID:
      #10058561

      XENTRY (MERCEDES): VEHICLE SHUTS DOWN AT 5 MPH BUT ENGINE ABLE TO BE RESTARTED VIA ECO START STOP DUE TO MISMATCHED LEVELS OF SOFTWARE. MODEL 2014-15 217, 222. *PE Read More »

    • TSB #LI7240P056909

      Date Announced:
      JUL 30, 2013
      NHTSA ID:
      #10205215

      Window lifter and outside mirror on passenger side malfunction after replacement of door control unit. Read More »

    EXTERIOR LIGHTING:HEADLIGHTS

    • TSB #SC-2015050002

      Date Announced:
      JUN 12, 2015
      NHTSA ID:
      #10058549

      MERCEDES: SOME VEHICLES DO NOT HAVE INSTALLED THE HEADLAMP HORIZONTAL ADJUSTMENT SEALING (SCREW) CAPS AND THEY SHOULD BE INSTALLED AT NEXT DEALER VISIT. MODEL 2015 205 (C CLASS). *PE Read More »

    VISIBILITY

    • TSB #LI72.40-P-058875

      Date Announced:
      APR 10, 2014
      NHTSA ID:
      #10167084

      Passenger side outside mirror glass adjusts itself at random at ignition on/off Read More »

    • TSB #LI7240P056909

      Date Announced:
      JUL 30, 2013
      NHTSA ID:
      #10205215

      Window lifter and outside mirror on passenger side malfunction after replacement of door control unit. Read More »

    SEAT BELTS

    SEAT BELTS:FRONT:RETRACTOR

    • TSB #LI91-00-P-061754

      Date Announced:
      JUN 30, 2015
      NHTSA ID:
      #10058547

      XENTRY (DAIMLER): SOME VEHICLES EXPERIENCE AN INCOMPLETE NORMALIZATION OF SEAT CUSHION AND BLOCKING BETWEEN SEAT BELT BUCKLE AND CONTROL UNIT DETECTS BLOCKAGE AND ABORTS NORMALIZATION SEQUENCE. MODEL 222 (CODE 232 + 224 +305). Read More »

    SEAT BELTS:FRONT:BUCKLE ASSEMBLY

    • TSB #LI91-00-P-061754

      Date Announced:
      JUN 30, 2015
      NHTSA ID:
      #10058547

      XENTRY (DAIMLER): SOME VEHICLES EXPERIENCE AN INCOMPLETE NORMALIZATION OF SEAT CUSHION AND BLOCKING BETWEEN SEAT BELT BUCKLE AND CONTROL UNIT DETECTS BLOCKAGE AND ABORTS NORMALIZATION SEQUENCE. MODEL 222 (CODE 232 + 224 +305). Read More »

    STRUCTURE

    • TSB #NCU - 24240304

      Date Announced:
      MAR 12, 2024
      NHTSA ID:
      #10252770

      As previously reported, to enhance the satisfaction of our customers, avoid further costs of litigation and return focus to its core businesses, Mercedes-Benz USA, LLC (MBUSA) has entered into a Settlement regarding claims relating to ... Read More »

    • TSB #ELW-RearSubframe

      Date Announced:
      FEB 10, 2023
      NHTSA ID:
      #10232321

      Mercedes-Benz USA, LLC (MBUSA) has extended the warranty for the rear subframe on the vehicles listed below, from the original New Vehicle Limited Warranty of 4 years/50,000 miles to 20 years/unlimited miles, and applies to the vehicle ... Read More »

    • TSB #LI72.00-P-075743

      Date Announced:
      JAN 04, 2023
      NHTSA ID:
      #10231031

      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 »

    STRUCTURE:BODY

    • TSB #NCU - 24240304

      Date Announced:
      MAR 12, 2024
      NHTSA ID:
      #10252770

      As previously reported, to enhance the satisfaction of our customers, avoid further costs of litigation and return focus to its core businesses, Mercedes-Benz USA, LLC (MBUSA) has entered into a Settlement regarding claims relating to ... Read More »

    LATCHES/LOCKS/LINKAGES:DOORS:LATCH

    • TSB #LI80.20-P-061495

      Date Announced:
      MAY 22, 2015
      NHTSA ID:
      #10058293

      XENTRY: C453: BULLETIN INFORMATION INVOLVING DRIVER NOT OPENING PROPERLY FROM THE OUTSIDE, WHEN IT IS UNLOCKED THE RADIO REMOTE CONTROL OF THE CENTRAL LOCKING, IF DOOR IS OPENED FROM THE INSIDE , THEN IT CAN OPEN FROM THE OUTSIDE AGAIN. Read More »

    VEHICLE SPEED CONTROL

    • TSB #LI7240P056909

      Date Announced:
      JUL 30, 2013
      NHTSA ID:
      #10205215

      Window lifter and outside mirror on passenger side malfunction after replacement of door control unit. 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 #LI91-00-P-061754

      Date Announced:
      JUN 30, 2015
      NHTSA ID:
      #10058547

      XENTRY (DAIMLER): SOME VEHICLES EXPERIENCE AN INCOMPLETE NORMALIZATION OF SEAT CUSHION AND BLOCKING BETWEEN SEAT BELT BUCKLE AND CONTROL UNIT DETECTS BLOCKAGE AND ABORTS NORMALIZATION SEQUENCE. MODEL 222 (CODE 232 + 224 +305). Read More »

    ELECTRONIC STABILITY CONTROL

    • TSB #SC-2015070001

      Date Announced:
      JUL 17, 2015
      NHTSA ID:
      #10058543

      MERCEDES: SOFTWARE UPDATE IS REQUIRED DUE TO NOT MEETING CURRENT PRODUCTION CONFIGURATION FOR ELECTRONIC STABILITY PROGRAM (ESP) CONTROL MODULE SOFTWARE. MODEL 2016 190. *PE UPDATED 10/9/15. Read More »

    ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC)

    • TSB #LI42.47-P-067502

      Date Announced:
      DEC 09, 2020
      NHTSA ID:
      #10186135

      If the customer brakes sharply from a speed of > 30mph, without ABS intervention, there is a single cracking noise from the area of the ESP hydraulic unit Read More »

    FORWARD COLLISION AVOIDANCE: SENSING SYSTEM: CAMERA

    LANE DEPARTURE: BLIND SPOT DETECTION

    LANE DEPARTURE: SENSING SYSTEM: CAMERA

    BACK OVER PREVENTION

    EQUIPMENT

    • 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 #2017030004

      Date Announced:
      JAN 14, 2021
      NHTSA ID:
      #10187796

      Replace 3rd brake lamp, remove soft top compartment cover to access. Read More »

    • TSB #NCU - HVAC Warra

      Date Announced:
      MAY 21, 2020
      NHTSA ID:
      #10176670

      To enhance the satisfaction of our customers, avoid further costs of litigation and return focus to its core businesses, Mercedes-Benz USA, LLC (MBUSA) has entered into a settlement regarding claims relating to alleged mold and mildew ... Read More »

    • TSB #SC-2015060002

      Date Announced:
      JUL 17, 2015
      NHTSA ID:
      #10058542

      MERCEDES: DETERMINATION OF A LEAKAGE AT TURBOCHARGER OIL FEED LINE, WHICH FAILS TO MEET SERIES PRODUCTION, NEEDS TO BE INSPECTED AND REPLACED, IF NECESSARY. MODEL 2015-16 190 (GTS), 205 (C-CLASS). Read More »

    • TSB #P-B-00.20-105

      Date Announced:
      MAR 10, 2014
      NHTSA ID:
      #10167531

      MY-All Model 205, Maintenance Interval Read More »

    • TSB #P-B-00.20-105

      Date Announced:
      MAR 10, 2014
      NHTSA ID:
      #10167571

      In addition to the information published in the Introduction into Service Manual, note maintenance interval changes for model 205. Read More »

    EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM)

    • TSB #LI82.85-P-074970

      Date Announced:
      JUL 07, 2022
      NHTSA ID:
      #10217162

      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 »

    • TSB #Launch NCU - 202

      Date Announced:
      JAN 07, 2021
      NHTSA ID:
      #10187793

      Mercedes-Benz AG (?MBAG?), the manufacturer of Mercedes-Benz, has determined that on certain Model Year (?MY?) 2013-2017 B-Class, C-Class, CLA-Class, CLS-Class, E-Class, G-Class, GL-Class, GLA-Class, GLC-Class, GLE-Class, GLK-Class, ... Read More »

    EQUIPMENT:MECHANICAL

    • TSB #LI7240P056909

      Date Announced:
      JUL 30, 2013
      NHTSA ID:
      #10205215

      Window lifter and outside mirror on passenger side malfunction after replacement of door control unit. Read More »

    EQUIPMENT ADAPTIVE/MOBILITY

    • TSB #2017030004

      Date Announced:
      JAN 14, 2021
      NHTSA ID:
      #10187796

      Replace 3rd brake lamp, remove soft top compartment cover to access. Read More »

    • TSB #SC-2015050002

      Date Announced:
      JUN 12, 2015
      NHTSA ID:
      #10058549

      MERCEDES: SOME VEHICLES DO NOT HAVE INSTALLED THE HEADLAMP HORIZONTAL ADJUSTMENT SEALING (SCREW) CAPS AND THEY SHOULD BE INSTALLED AT NEXT DEALER VISIT. MODEL 2015 205 (C CLASS). *PE Read More »

    • TSB #CB-2015060006

      Date Announced:
      JUN 01, 2015
      NHTSA ID:
      #10058526

      MERCEDES: ON SOME VEHICLES LEFT SIDE OF ENGINE, THE HEAT SHIELD WAS MISTAKENLY INSTALLED AND CAUSES CLEARANCE CONDITION AND NEEDS TO BE REMOVED. MODEL 2015 212, 218 (E, CLS). *PE Read More »

    UNKNOWN OR OTHER

    • TSB #LI2700P0647671

      Date Announced:
      AUG 26, 2016
      NHTSA ID:
      #10205156

      Intial startup not possible after replacement of transmisson 725.0 or of electrohydraulic controller unit. Read More »

    • TSB #LI1830P0597123

      Date Announced:
      AUG 05, 2016
      NHTSA ID:
      #10205154

      Gasket may settle causing a slight oil leak. Read More »