2018 Mercedes-Benz C300
TSBs (Technical Service Bulletins)
Technical Service Bulletins (TSBs) for the 2018 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 #LI46.15-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. 1. Read More »
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TSB #LI46.15-P-071669
Cracking/Creaking Noises Coming From The Area Of The Mechanical Steering Column Read More »
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TSB #LI46.35-P-059989
Red display message in instrument cluster "Power Steering Malfunction - See Owner's Manual" Read More »
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TSB #LI46.35-P-059989
Red display message in instrument cluster "Power Steering Malfunction - See Owner's Manual" 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 #LI33 30-P-056665
Throttle lift-off clunking noises at drive shafts of front axle Read More »
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TSB #LI32.25-P-061137
Clunking noise from front axle suspension strut or rear axle shock absorber on short strokes of the damper Read More »
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TSB #LI32.25-P-061137
Clunking noise from front axle suspension strut or rear axle shock absorber on short strokes of the damper Read More »
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TSB #LI32.25-P-061137
Clunking noise from front axle suspension strut or rear axle shock absorber on short strokes of the damper Read More »
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TSB #LI01.20-P-076894
Check engine light illuminated Fault code stored in N3/10 control unit- P052E71 Positive Crankcase Ventilation Regulator Valve Performance: The valve for crankcase ventilation has a malfunction The partial-load ventilation valve (a ... 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 #LI01.20-P-076894
Check engine light illuminated Fault code stored in N3/10 control unit- P052E71 a?? Positive Crankcase Ventilation Regulator Valve Performance: The valve for crankcase ventilation has a malfunction The partial-load ventilation valve ... 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, LLC (a??MBUSAa??) is extending the warranty coverage on the intake line assembly in ... Read More »
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TSB #SC-202203005
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 »
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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 #P-SC-2019050006
Check coolant hose from expansion reservoir to cooler and replace if necessary Read More »
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TSB #LI07 70-P-066276
Check Engine Light is on with DTC P030185/ P030685 for misfire cylinder 1 and 6. Read More »
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TSB #LI1830P0597123
Gasket may settle causing a slight oil leak. 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, LLC (a??MBUSAa??) is extending the warranty coverage on the intake line assembly in ... Read More »
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TSB #P-SC-2019100021
Replace heat shield of exhaust system Read More »
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TSB #Launch NCU 20200
Mercedes-Benz AG (?MBAG?), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year 2018-2019 C and E-Class vehicles (205/238 platforms), an incorrect activated carbon filter might have been installed. Read More »
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TSB #LI01.20-P-076894
Check engine light illuminated Fault code stored in N3/10 control unit- P052E71 a?? Positive Crankcase Ventilation Regulator Valve Performance: The valve for crankcase ventilation has a malfunction The partial-load ventilation valve ... 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 #P-SC-2017080006
Update fuel system control unit (FSCU) software 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 #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 #LI35 30-P-058566
Throttle lift-off clunking noises at drive shafts of rear axle Read More »
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TSB #LI54-10-P-069831
Electric range is reduced after brief period 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-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 #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 #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 #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 #SC-202203005
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 »
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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 #LI08.00-P-072749
For plug in hybrid and electric variants: Complaints about the electric range 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-059356
The animation in individual vehicle settings such as, e.g. mirror folding function or seat belt adjustment is missing. Note: The functions of these vehicle settings are not affected. Read More »
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TSB #LI82.85-P-055695
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 »
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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 #LI83-70-P-064480
"High-voltage battery warning message" in instrument cluster Read More »
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TSB #LI82-85-P-069725
COMAND Online (code 531): Wrong date in system settings, incorrect time in instrument cluster Read More »
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TSB #LI8370P0644803
High voltage battery warning message in instrument cluster. Read More »
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TSB #LI54.18-P-062956
ESP, BAS, PRE-SAFE - Fault message in instrument cluster 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 #LI82-85-P-069789
NTG 5.5 head unit - Browser shows "Fault during authentication" message Read More »
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TSB #2018010007
Update HERMES control unit software 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 #LI82 20-P-067107
LED light on thermal cup holder in rear passenger compartment of BR 222 flickers Read More »
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TSB #LI82.10-P-064766
Lamp unit fogged or droplets forming. Due to the vent openings, the lamp unit is an "open system". This means that acidic gases, moisture, dirt and exhaust gases can penetrate it. This can result in deposits on the diffuser and lens. Read More »
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TSB #LI82.10-P-062049
Headlamps fogged 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 #LI82.10-P-064766
Lamp unit fogged or droplets forming. Due to the vent openings, the lamp unit is an "open system". This means that acidic gases, moisture, dirt and exhaust gases can penetrate it. This can result in deposits on the diffuser and lens. 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 40-P-069934
Outside mirror folding out/in nonfunctional Read More »
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TSB #LI72.40-P-058875
Passenger side outside mirror glass adjusts itself at random at ignition on/off 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 #LI91 45-P-066075
Seat belt extender toothed rack sluggish or makes noises 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 #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 #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 #LI54-71-P-068935
BR205 Facelift - Blind Spot Assist may activate without obvious cause 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 #LI82 20-P-067044
Partial operation of interior ambient lighting Read More »
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TSB #LI82.85-P-071453
Incorrect time and/or instrument cluster message "SOS, service not activated" and/or Mercedes Me connect services nonfunctional 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 #LI2700P073106
Remote start causing CEL and U012600. Read More »
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TSB #LI82.10-P-064766
Lamp unit fogged or droplets forming. Due to the vent openings, the lamp unit is an "open system". This means that acidic gases, moisture, dirt and exhaust gases can penetrate it. This can result in deposits on the diffuser and lens. 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 #LI77 30-P-070145
Fraying Headliner Cords Read More »
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TSB #LI82 20-P-067107
LED light on thermal cup holder in rear passenger compartment of BR 222 flickers 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 #LI82.85-P-059362
The Audio 20 control unit (A26/17) or COMAND Online control unit (A26/17) does not start (central display dark/ no audio output) and is not recognized with XENTRY Diagnostics although the fuses and the power supply are OK. Read More »
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TSB #P-B-00.20-105
MY-All Model 205, Maintenance Interval Read More »
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TSB #P-B-00.20-105
In addition to the information published in the Introduction into Service Manual, note maintenance interval changes for model 205. 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 #LI54-30-P-069742
Head-up display (HUD, code 463) - lines on the display, display flickers 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 #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 #LI82.85-P-071453
Incorrect time and/or instrument cluster message "SOS, service not activated" and/or Mercedes Me connect services nonfunctional 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 #LI33 30-P-056665
Throttle lift-off clunking noises at drive shafts of front axle Read More »
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TSB #LI82 20-P-067107
LED light on thermal cup holder in rear passenger compartment of BR 222 flickers 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 »