2019 Mercedes-Benz C300 Technical Service Bulletins

182 technical service bulletins (TSBs) are on record for the 2019 Mercedes-Benz C300. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 10249495Jan 24, 2024Steering. Noises in the steering column area when steering. Under analysis. Check which area of the steering column the noises occur in. Do the noises tend to occur at the bottom in the driver footwell or do they tend to occur in the area of the steering column switch module (MRSM/SCCM)? If the noises occur in the area of the MRSM/SCCM, work through the following points: - Loosen screws of the MRSM/SCCM and steering wheel…
• 10249482Jan 24, 2024Steering. 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-Schleifgeräusch_SteeringWheel-GrindingNoises.mp4 The plastic cover on the back of the steering wheel is not positioned correctly and may therefore rub against the steering column switch module Please use the following noise files for…
• 10249726Jan 18, 2024Electrical system. Mercedes-Benz AG (“MBAG”), 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, 190/290,217/222, 231, 172) vehicles, the software of the communication module does not correspond with the latest series production configuration.
• 10248195Dec 7, 2023Electrical system. Mercedes-Benz AG (“MBAG”), 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, 238, 243, 463, 247, 253, 167, 290, 217, 222 platform) vehicles, the communication module system software does not correspond with the latest series production configuration.
• 10248162Dec 4, 2023Seats. Crease formation on genuine leather seat covers in vehicles with low mileage • Objects left on the seats for extended periods of time (pressure marks). • Objects wedged between the seat backrest and seat cushion (e.g. seat belt buckle). • Light initial creases due to vehicle handling. • Light creases in the outer covers originating from the production process (missing finish). Heat treatment of…
• 10246281Nov 17, 2023Engine cooling. Fault code P06DA00 is found current or stored in engine control unit. Check engine light may be activated. Various causes Up to Model year 2018 Fault code P06DA00 can be disregarded if not activating the check engine light, unless otherwise specified in the guided test. The vehicle continues to operate as designed. Further causes should be investigated if complaint of check engine light is received.
• 10244837Oct 10, 2023Electrical system. The "SOS nonfunctional" message appears sporadically in the instrument cluster of the vehicle. The fault code B129C00 is stored in the control unit log. The message occurs in particular after the vehicle has been non-operational for an extended period of time; the message then disappears of its own accord after a few minutes. No functional limitation to the emergency call system is to be expected. Software error in…
• 10243565Sep 22, 2023Engine cooling. In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA (“MBUSA”) is extending the coverage for the intake line assembly on your vehicle from the original New Vehicle Limited Warranty of 4 years / 50,000 miles to 15 years / 150,000 miles (whichever occurs first), and applies to the vehicle regardless of ownership…
• 10241527Aug 28, 2023Electrical system. Mercedes-Benz AG (“MBAG”), 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) vehicles, the communication module software does not correspond with the latest series production configuration. The update is free of charge and will be carried out in the background.
• 10238437Jun 15, 2023Visibility (wipers, defrost, mirrors), Electrical system. Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz, has determined that on certain Model Year (“MY”) 2016 – 2021 C-Class (205 platform), E-Class (213 platform) and GLC (253 platform) vehicles, the air conditioning control unit software may not meet production specifications. There is a possibility that a stuck open thermostat may wrongly be detected causing the check engine Malfunction Indicator…
• 10233783Mar 1, 2023Steering. Complaint Loads induced at the steering wheel through pushing and pulling actions may cause creaking and cracking noises in the mechanical steering column. Cause Insufficient grease lubrication in the clamping area of the mechanical steering column. Remedy Grease the clamping area.
• 10231032Jan 5, 2023Latches, locks and linkages, Electrical system. 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. Remedy As of the 6th generation, the vehicle key can be recoded so that the tailgate no longer opens as a result of a long press on the button, but by double-clicking on the button instead.
• 10231031Jan 4, 2023Body and structure. 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. Check if the problem cannot be rectified by polishing the trim bars with the polishing paste. 2. If the complaint cannot be rectified, replace the door beltline trim bars, door upper trim bars and rear side…
• 10217157Jul 14, 2022Electrical system, Equipment, Steering. 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. Steering column height adjustment transmission 2. Seat control unit software Remedy There are 2 repair procedures to follow depending on vehicle (differentiated according to model and vehicle…
• 10217154Jul 11, 2022Suspension, Equipment. 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. In future, the rear axle shock absorber support bushing will be available individually as a replacement part to avoid any unnecessary shock absorber noise.
• 10217162Jul 7, 2022Electrical system, Equipment. Complaint Customer may have one or more of the following complaints: • Vehicle location is shown incorrectly in the Navigation Display • Navigation destination search is not possible • Street names are not shown in Navigation display • Apple Carplay is inoperable Cause Improper installation of navigation map data Remedy Follow these steps to delete and re-install map data: • Re-format an empty USB drive…
• 10215212Jun 15, 2022Equipment, Electrical system. Complaint Customer may have one or more of the following complaints: • Vehicle location is shown incorrectly in the Navigation Display • Navigation destination search is not possible • Street names are not shown in Navigation display • Apple Carplay is inoperable Cause Improper installation of navigation map data Remedy Follow these steps to delete and re-install map data: • Re-format an empty USB drive…
• 10209877Mar 31, 2022Electrical system. 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 battery. The XENTRY battery test may not take into account a single discharge event because the SAM cannot record the data if the battery is discharged. Note: A discharged battery does…
• 10208744Feb 16, 2022Interior lighting. Complaint The touchpad dimming function does not work and the search lighting is either at maximum brightness or fully off (dependent upon dimming signal). Note: The dimming functions of the instrument cluster and head unit display are not affected and remain fully functional. Cause Touchpad (A105) hardware Remedy The serial numbers of the potentially affected parts can be found in the attached list.
• 10207198Jan 27, 2022Electrical system. Complaint The garage door hand transmitter cannot be initialized with the integrated garage door opener in the inside rearview mirror. Cause 1. The integrated garage door opener (GDO) is not compatible with the opening system installed in the garage. 2. The garage door drive uses a rolling code system. In contrast to the fixed code system, the LED in the mirror in this case flashes green after programming. 3.
• 10207199Jan 9, 2022Electrical system. 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. When comparing the range between the integrated GTO and the garage door hand transmitter, the garage door hand transmitter is tested outside the vehicle. 3. The garage door hand transmitter is being…
• 10207205Jan 4, 2022Seats, Electrical system. 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. Remedy • Perform SCN coding of rear SAM (BC_R). • Commission seat heating control unit.
• 10206077Dec 8, 2021Engine cooling. "MY15+ M278 and M157 Equipped Vehicles with Fault Code ""P023400 – Boost Pressure is Too High"" "
• 10205417Oct 15, 2021Equipment. New service campaign launch information.
• 10205807Aug 27, 2021Equipment. The Weather App will not populate local weather data based on current vehicle position.
• 10205814Aug 11, 2021Fuel system. Fuel filler flap opens slowly/switch flashes/tank is bleeding instrument cluster warning
• 10205801Aug 10, 2021Equipment. Intermittently after bus sleep the lower control panel LCP and upper control panel UCP may be panel UCP may be inoperable.
• 10199654Jul 6, 2021Equipment. "Free browsing, Internet access via Wi-Fi hotspot and Internet radio nonfunctional"
• 10202531Jun 16, 2021Interior lighting. Touch pad: Search lighting does not dim or does not turn on.
• 10202530May 25, 2021Electrical system, Equipment, Engine cooling. Remote start causing CEL and U012600.
• 10202534May 21, 2021Transmission and drivetrain. Update Coding of Powertrain Control Unit.
• 10195220Apr 20, 2021Electrical system. For plug in hybrid and electric variants: Complaints about the electric range
• 10189400Feb 11, 2021Engine cooling. 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. In this case, the vehicle may not meet emission and certification requirements. MBUSA will conduct a voluntary Emission Recall Campaign in which an authorized Mercedes- Benz dealer will…
• 10186148Dec 30, 2020Visibility (wipers, defrost, mirrors). Air Conditioning Intermittently Does Not Cool
• 10186141Dec 10, 2020Electrical system. NTG5.5: Incorrect time shown on instrument cluster, COMAND display, and analog clock
• 11031594Oct 29, 2020Visibility (wipers, defrost, mirrors). This NCU replaces the prior NCUs issued on May 18, June 25, 2020 and October 1, 2020 and contains important workshop instructions on how the HVAC Service Warranty repair must be carried out. 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…
• 10181128Sep 16, 2020Steering. Cracking/Creaking Noises Coming From The Area Of The Mechanical Steering Column
• 10179950Aug 26, 2020Transmission and drivetrain. Harsh engagement when changing gear range from P to D or R
• 10179949Aug 24, 2020Transmission and drivetrain. Shifting complaints and transmission fault codes in vehicles with transmission 725.0
• 10179973Aug 14, 2020Electrical system, Engine. Mercedes-Benz AG ("MBAG"), the manufacturer of Mercedes-Benz, has determined that on certain MY19-20 C-Class, GLC-Class, and AMG GT (205, 253, and 290 platform) vehicles, the software for the AMG drive unit control unit does not correspond to the current series production configuration. As a result, noise may occur from the engine mounts. An authorized Mercedes-Benz dealer will update the software as necessary.
• 10179966Jul 31, 2020Equipment, Other or unknown. Incorrect time and/or instrument cluster message "SOS, service not activated" and/or Mercedes Me connect services nonfunctional
• 10178732Jul 20, 2020Equipment. Air Conditioning Intermittently Does Not Cool
• 10178743Jul 10, 2020Suspension, Electrical system. Mercedes-Benz AG ("MBAG"), the manufacturer of Mercedes-Benz, has determined that the active engine mounts in certain C-Class (model series 205), E-Class (model series 213), GLC (model series 253), and AMG GT (model series 290) vehicles cannot be energized after a failure of the acceleration sensors. As a result, noises from the rear axle differential would be noticeable. This is why a software update of the AMG…
• 10178712Jul 2, 2020Fuel system, Other or unknown. Message in the Instrument Cluster "Refill 1L Oil at the Next Fuel Stop"
• 10178715Jun 30, 2020Exterior lighting. Headlamps fogged
• 10177571Jun 30, 2020Exterior lighting, Equipment. 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. Check housing cover of lamp unit for natural fogging or dew as per GI82.10-P-009047. . 1. If a reduction in the degree of fogging is visible, the desiccant packs can be used once the…
• 10175245Apr 30, 2020Equipment. NTG5.5 Audio 20 with codes 355 and 357: Vehicle positioning inaccurate / implausible, route guidance not possible
• 10172683Feb 7, 2020Tires, Equipment. Information Label on Tire Sealant
• 10171635Jan 13, 2020Equipment. NTG5.5, NTG6: Vehicle positioning inaccurate / implausible, route guidance not possible
• 10170535Dec 5, 2019Transmission and drivetrain. Update Powertrain Control Unit (PTCU) Software

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