2022 Mercedes-Benz C300 Technical Service Bulletins

392 technical service bulletins (TSBs) are on record for the 2022 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.

• 11008977Oct 16, 2024Electrical system, Engine. Complaint Combustion engine could no longer be started, only electric driving possible. Cause High-voltage belt-driven starter-alternator faulty. Remedy Requirement: Prior to the implementation of the test work, it must be ensured that the person carrying out this work has successfully completed the required HV qualification to work on HV system.
• 11008712Oct 4, 2024Electrical system, Engine. Complaint Check engine light on. One of the below fault codes is current in the engine control module (N3/10). P04DB29, P04DB31, P04DB79 Cause Open circuit or high resistance to crankcase vent line contact Remedy 1. Check the electrical connector for the relevant vent line contact switch noted below. Refer to attached photos of connection locations. 2. Ensure the bolted connection is secure and bolt can be torqued…
• 11008883Oct 3, 2024Seats. Complaint Play/noise at height adjuster or in seat guide rail on front seats Cause Tolerances and variations in the manufacturing process Remedy Review of barcode adhesive label on air intake pipe of height adjuster. The seat frame base with the height adjuster motor can be replaced if the production status is lower than E105 (pic.1: seat label) If the production status is higher than or equal to E105, please…
• 11008880Oct 3, 2024Electrical system. Complaint After a control unit replacement of "N112/9 - control unit for telematics services (HERMES)" or the "N112/2 - control unit for telematics services (RAMSES)", the Digital Extras (previously Mercedes me) cannot be activated. The DTC B15CE00 is active or active+saved.
• 11008879Oct 3, 2024Electrical system. Complaint This document applies to vehicles of model series 206 and 254 from SOP (start of production) with NTG7, that do not have SA code 367: The Live Traffic Information Digital Extra is missing, is not available or does not work, even though the license has been purchased from the Mercedes me Store. Cause Problem with the store's offer provision for Digital Extras. Remedy Remedial action is currently being…
• 11008875Oct 3, 2024Body and structure, Visibility (wipers, defrost, mirrors). Complaint Sliding sunroof panel of panoramic sliding sunroof reversed (temporarily, once, multiple times) during closing process without entrapment event. Cause It is not possible to save the relearning process for force progression after each actuation. A, e.g. mechanical sluggishness caused by aging cannot be compensated for here. Remedy Perform commissioning of panoramic roof control unit (PSD, A98, TSSR223).
• 11008873Oct 1, 2024Transmission and drivetrain. Complaint Tension-releasing impact of the propeller shaft with the force-free in D "KID" function, after vehicle has stopped. Cause The tension-releasing jolt in the drivetrain originates as a result of the "release" of energy stored when braking through the force-free switch after stopping. It is suspected that the longitudinal bearing is being placed under tension here as a result of the vehicle "dropping off"…
• 11008091Sep 28, 2024Electrical system. Complaint During a phone call, the called party has difficulty understanding/cannot understand the driver, or interference/background noises are audible to the called party during a call. It becomes increasingly difficult to understand as the speed rises. Cause A. Seating of the microphones in the headliner. Side edges are covered by the textile cover (see picture "1") B. Assembly of microphones (B25/20 or B25/21)…
• 11008065Sep 25, 2024Electrical system. Cause The following conditions can occur on vehicles with a disconnected on-board electrical system battery 12V/48V): • The period in which the on-board electrical system battery is disconnected cannot be counted by the maintenance computer. • As soon as the on-board electrical system battery is connected again, the maintenance computer automatically starts counting without making a correction to the remaining time…
• 11007974Sep 21, 2024Exterior lighting. Complaint Headlamps leaking or fogged Cause The fogging of the headlamp is a natural phenomenon which can occur under certain climatic conditions. In contrast to a leaky headlamp, physical fogging does not result in a technical impairment of the headlamp. A leak test must be performed to determine if physical fogging exists or if the headlamp is leaky. Remedy In advance, observe LI82.10-P-078301 "Headlamps or Front…
• 11007969Sep 18, 2024Electrical system. Complaint When using the offroad display in the MBUX, the "Transparent hood" function cannot be activated using the camera symbol. Cause MBUX FUP5 software: • E504.3 (A 297 904 97 00) • E504.4 (A 297 904 03 01) Remedy The remedy is currently being developed.
• 11007966Sep 18, 2024Suspension, Electrical system. Complaint Display dark (total or partial) of one or more ASCM (AMG) steering wheel button displays - see attachment. Note: There is no loss of vehicle functionality due to this complaint. Cause Software can cause a partial display on the ASCM. Remedy Please perform the following steps in the event of a total or partial display of the ASCM displays: 1. Perform a hard reset (disconnect power supply) of control unit…
• 11008056Sep 16, 2024Engine. Complaint Check engine light on. Fault code P207273 - "Throttle actuator valve is blocked due to ice" stored. Engine may crank and not start. Fault code P210185 may also be stored. Cause Moisture freezing on throttle actuator during extreme low ambient temperatures. Remedy Update software of engine control module. Software increases throttle valve flapping after engine turned off to prevent moisture buildup.
• 11007796Sep 11, 2024Electrical system, Visibility (wipers, defrost, mirrors). Complaint Individual functions such as sliding sunroof or roller sunblind can no longer be operated using the gesture recognition system. Cause Gesture recognition system control unit software N168 Remedy For vehicles before modification year 23/2: A remedy is currently being developed. Replacing parts will have no effect. For vehicles as of modification year 23/2: Considered to be a series production…
• 11008323Sep 10, 2024Exterior lighting. Complaint Headlamps fogged or droplets forming. Cause Due to its outlet openings, the headlamp is an "open system". This means that acidic gases, moisture, dirt and exhaust gases can penetrate into the headlamp. This can lead to the formation of condensation on the lens of the headlamp. The headlamps comply with all applicable US standards and regulations. Remedy Check housing cover of lamp unit for natural fogging…
• 11007753Sep 10, 2024Exterior lighting. Complaint Headlamp or front fog lamp leaky or fogged Cause Fogging of the headlamps is a natural phenomenon, which can occur under certain climatic conditions. It does not lead to any technical impairment of the headlamp. Headlamps comply with all applicable standards. If a pressure compensation diaphragm is fitted in the housing cover, then the lamp unit is a "closed system". Remedy Headlamp: Remedy 1 Clearing…
• 11007752Sep 10, 2024Exterior lighting. Complaint Transfer of selected user-defined scene/ animation (MeApp) from HU to ECU software fails to start. Charging bar stops at 0%. (Picture in attachment) Cause Communication between light control unit and HU Remedy Software update to latest version: - A26/17 - MBUX multimedia system (head unit) - E1n14 - Front left digital headlamp control unit (DHLS-CU-VL) - E2n14 - Front right digital headlamp control unit…
• 11007751Sep 10, 2024Body and structure. Complaint Indentations in the roof paneling in row bow areas. Note: This is within the surface area of the roof skin when no sunroof is applicable. See attached photo. Cause Flexibility of adhesive joint between roof bow and roof paneling. Remedy 1 - Remove headliner, see AR68.30-P-4300WT. 2 - Cut open adhesive bead in area of visible deformation in roof paneling using a cutting wire at the roof bows. *Caution: Do…
• 11007673Sep 10, 2024Body and structure. Complaint Damage or discoloration to paint protection films on vehicle. Cause Chip protection films are a wear item that may need to be replaced over the life of the vehicle. They are typically not covered by vehicle warranty. Remedy To properly install a paint/chip protection film, please follow the below guidelines: #1 - Utilize a solution that is 0.2% soap solution (1,000ml of water + 2ml of liquid soap). #2…
• 11007790Sep 9, 2024Exterior lighting. Complaint Headlamps fogged or droplets forming. Cause Due to the housing cover with pressure compensation diaphragm, the headlamps are a "closed system". This means that the headlamps are protected against acid gases, dirt and exhaust gas. However, moisture can still enter from two sources. Through absorption and desorption (the commonest cause) or through permeation.
• 11007728Sep 9, 2024Transmission and drivetrain. Complaint To insure vehicle down time is kept at a minimum and all required information is available when case is escalated, as well as assist technicians with checks that may help lead in resolving issue without case creation. THIS LI IS NOT TO BE USED AS A REASON FOR CASE CREATION BUT AS A GUIDE IF A CASE IS NEEDED Cause There are, at times, additional steps workshops can do to help diagnose and rectify…
• 11007731Sep 7, 2024Electrical system, Fuel system. 1. Connect XENTRY Diagnosis. 2. Update Fuel System Control Unit (FSCU10) software. To do this, select menu item "Quick test view . N118/3 – Control unit ‘Fuel pump’ (FSCU10) . Adaptations . Control unit update . Updating of control unit software". Then follow the user guidance in XENTRY Diagnosis. 3. Disconnect XENTRY Diagnosis.
• 11006710Aug 30, 2024Electrical system. Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY21-24 C-Class (206 platform), EQE (294 and 296 platform), EQS (295 and 297 platform), GLC (254 platform), AMG GT (192 platform), S-Class (223 platform), and AMG SL (232 platform) vehicles, the communication module software does not correspond with the latest series production configuration. The communication…
• 11006544Aug 16, 2024Electrical system. Complaint Vehicle not AC charging. Check engine light on. PTCU/N127 with fault code P0D9100 "The lock for the charging cable has an open circuit". Cause Possible Hardware and/or Software. Investigation is ongoing. Remedy Please open TIPS case. TIPS case: Needed customer feedback: When did the complaint/IC message occur? While driving and /or charging / or parking? If the complaint occurred while charging, how long…
• 11006700Aug 14, 2024Electrical system. Complaint Once the head unit A26/17 is updated to the FUP4 software release E445.0, it may be the case that online connectivity is no longer available Cause E445.0 FUP4 software release Remedy Update the A26/17 - MBUX multimedia system (Head unit) software to E445.2 FUP4 Optimized or newer version to resolve the complaint.
• 11006593Aug 14, 2024Electrical system. Complaint The oil level is not correctly displayed while the instrument cluster display is in workshop mode. The oil level is reported in an inverted fashion when a correction is carried out. I.e. instead of an instruction to refill the oil quantity, an instruction to reduce the oil level is displayed, or vice versa.
• 11006547Aug 13, 2024Electrical system. Complaint Customer states that wireless Apple Carplay does not initiate at start-up. The MBUX Display states "Apple Carplay could not be started. Your device has been connected as a bluetooth phone" Cause Previous MBUX Multimedia System (A26/17) software Remedy Update the MBUX Multimedia System (A26/17) software to version E330.x or newer.
• 11006699Aug 6, 2024Electrical system. Complaint Radio reception interference and the following DTCs are displayed in the A26/17 - MBUX multimedia system control unit as "active and stored": • B19B313 - Antenna 1 open load • B19B413 - Antenna 2 open load • B19B513 - Antenna 3 open load • B19B613 - Antenna 4 open load Cause Antenna amplifier Remedy Replace the antenna amplifier.
• 11006695Aug 5, 2024Electrical system. Complaint When using the offroad display in the MBUX, the "Transparent hood" function cannot be activated using the camera symbol. Cause MBUX FUP5 software: • E504.3 (A 297 904 97 00) • E504.4 (A 297 904 03 01) Remedy The remedy is currently being developed. Note: A remedy is not yet available. Replacing the hardware does not resolve the symptom. Do not replace the MBUX for this concern. The information will be…
• 11005315Jul 23, 2024Electrical system. Complaint The oil level is not correctly displayed while the instrument cluster display is in workshop mode. The oil level is reported in an inverted fashion when a correction is carried out. I.e. instead of an instruction to refill the oil quantity, an instruction to reduce the oil level is displayed, or vice versa. Cause Previous software release for instrument cluster control unit (N133/1) Remedy Update…
• 11005294Jul 23, 2024Exterior lighting. Complaint Rear lamps fogged up/not leaktight. Cause Fogging of the rear lamps is a natural phenomenon, which can occur under certain climatic conditions. This does not lead to any technical impairment of the rear lamps. Remedy Rear lamp: Remedy 1: Clearing fogged/condensed rear lamps: 1. Drive the vehicle into the workshop (temperature higher than +18 °C/+64.4 °F) Note: Do not wash the vehicle or subject it to…
• 11005336Jul 22, 2024Exterior lighting, Electrical system. Complaint Digital light pop-up messages (warnings, notes, spotlight and dyn. low beam) appear in the instrument cluster (picture in attachment), even though the same digital light settings are stored in all MBUX profiles Note: The pop-up messages are intended to indicate different settings when changing MBUX profiles Cause - ECU software error Remedy - Reset MBUX to manufacturer default settings.
• 11005314Jul 20, 2024Engine. Complaint Yellow Coolant warning comes on in cluster Fault codes below are current or stored in MED41 P0A0500- The actuation of the circulation pump for the low-temperature circuit has an open circuit. P00B700- The coolant flow is too low. P0C7300- Circulation pump 1 for the low-temperature circuit has a malfunction. Cause Air may be trapped in the coolant circuit for transmission cooler Remedy Check coolant level…
• 11005313Jul 17, 2024Engine. Complaint Check engine light on and fault code P019185 current or stored in MED41 control unit. Adaptation and misfire faults may also be stored. Vehicle may enter limp home mode. Cause False detection of rail pressure sensor out of range. Remedy Update software of engine control module N3/10. Reset mixture adaptation and clear fault codes.
• 11005334Jul 15, 2024Electrical system, Brakes, Forward collision avoidance. Complaint Hand detection system not operating correctly / vehicles with code 266 Fault message in instrument cluster: "Active Emergency Stop Assist not available" "Active Lane Keeping Assist not available" Cause Possible causes: the hand detection mat, the hand detection control unit, the contacts and the steering wheel harness. Remedy Test Procedure: Perform an initial quick test with freeze frame data.
• 11005344Jul 9, 2024Transmission and drivetrain. Complaint Customer complaints relating to automatic transmission 725.0 (NAG3 Classic / 9G-TRONIC automatic transmission) and 725.1 (NAG3 facelift/9G-TRONIC automatic transmission facelift) For faster, more effective and more targeted diagnosis, Intelligent Predictive Repair (IPR) has been developed and integrated into XENTRY Diagnosis. This ensures an automated diagnosis process.
• 11005331Jul 9, 2024Transmission and drivetrain. Complaint Only vehicles with a variable transfer case are affected. Can be identified through control unit N45 or N15/7 in the quick test When accelerating with light load, vibrations or jolting sensation may come from the drivetrain Cause Modified oil quality of the transfer case over time Remedy Check initial quick test for faults in the following control units N45 - All-wheel drive (ARS) N127 - 'Drivetrain'…
• 11003218Jun 21, 2024Transmission and drivetrain. Complaint Complaints about shift quality in vehicles of MODEL 205, 212 and 222 with TRANSMISSION 724.2. Cause If the shift adaptation is not performed as described under "Remedy", the adaptation values may not be saved correctly under certain circumstances. Remedy In vehicles of MODEL 205, 212 and 222 with TRANSMISSION 724.2, it must be ensured that the adaptation of the shifts is performed only as described below.
• 11003213Jun 18, 2024Electrical system. Complaint USB port data storage medium is not recognized, but charging function is still available. We are only aware of this complaint in a few isolated cases and it only occurs intermittently (not in every driving cycle). Cause Multimedia connection unit Remedy Replace the multimedia connection unit. Affected item numbers: A 214 820 81 00 A 223 820 14 05 Manufactured before 10/2023 modified parts have been…
• 11003093Jun 18, 2024Visibility (wipers, defrost, mirrors), Electrical system. Complaint When the pre-entry climate control was activated via Mercedes me connect App, the driver no longer had access to a cooling output for the vehicle interior once the vehicle had started. Cause If pre-entry climate control is activated, the engine fan should switch on to regulate corresponding temperature and pressure rises in the refrigerant circuit. Since the engine fan is not switched on, high pressure…
• 11003212Jun 12, 2024Electrical system, Steering. Complaint Noticeable vibrations at the steering wheel: • At speeds between 40mph and 75mph • On straight stretches of road and in long corners • With driver assistance systems switched on Cause Control oscillations in the electric power steering. Remedy Perform software update of electric power steering (N68). Note: Please ensure newest Xentry release software is installed and all addons are updated.
• 11003210Jun 11, 2024Electrical system. Complaint In the instrument cluster, the symbol for "12 V battery" and the message "Switch on vehicle" may sporadically be displayed. As a consequence of this, the fault codes B1FCB97 (=> N73/3) and U116000 (=> N73/3*1) are stored in the fault memory. In the subsequent analysis of the 12 V on-board electrical system data, the following parameters are noteworthy (see picture 1 in the attachment): • Charge balance…
• 11003205Jun 6, 2024Seats, Electrical system. Complaint The driver's seat memory settings do not synchronize with the driver's user profile as described in the operator's manual. Driver's seat settings are not transferred to the vehicle. Cause The driver's seat does not support the profile synchronization feature on these vehicles. Remedy There is no remedy for this complaint. The vehicle is working as designed. Note: Do not replace any parts.
• 11000621May 30, 2024Engine. Engine oil seeping from right rear of engine at upper area of timing case cover. Porosity in casting of timing case cover. Remedy Clean area around exhaust bracket and apply leak detection spray. Proceed with below steps if leakage is confirmed from orange bolt shown in attachment. -Remove orange bolt shown in attachment and thoroughly clean bore with brake cleaner. -Ensure bore is completely dry. -Use new bolt…
• 11000706May 29, 2024Electrical system. Complaint • Red display in the Charging indicator status in MBUX during AC Charging. • Error message in Mercedes Me App. • Fault code P0E5F97 exists in N83 (AC charger for high-voltage battery (SG-LG)) Cause The message/indicator status appears when the vehicle is parked outside, under direct sunlight or in higher temperature regions. Remedy • Not an error. Vehicle charging continues and does not abort. Charging…
• 11000615May 17, 2024Electrical system. In the instrument cluster, the symbol for "12 V battery" and the message "Switch on vehicle" may sporadically be displayed. As a consequence of this, the fault codes B1FCB97 (=> N73/3) and U116000 (=> N73/3*1) are stored in the fault memory. In the subsequent analysis of the 12 V on-board electrical system data, the following parameters are noteworthy (see picture 1 in the attachment): • Charge balance negative…
• 11000534May 17, 2024Electrical system. Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 22-24 C-Class, EQE, EQS, GLC, S-Class, SL (206, 294, 295, 296, 297, 254, 223, 232 platform) vehicles, the communication module software does not correspond with the latest series production configuration. The communication module will receive an OTA software update that includes product improvements. MBUSA will conduct…
• 11000541May 4, 2024Electrical system. Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY21-24 C-Class, CLA, EQB, EQE, EQS, GLA, GLB, GLC, GLE, GLS, GT, S-Class, and SL (118, 167, 192, 206, 223, 232, 243, 247, 254, 290, 294, 295, 296 and 297 platform) vehicles, the MBUX system software does not correspond with the latest series production configuration.
• 11000518May 4, 2024Electrical system. Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY21-23 C-Class and S-Class vehicles (206, 223 platform), the software for the ISA control unit may not correspond with the latest series production configuration. The possibility exists that the function of the ISA may not be restricted with an active Malfunction Indicator Lamp. MBUSA will conduct a service campaign.
• 10253723Apr 30, 2024Electrical system. Wireless Media Interface: Smartphone cannot be charged or charging process is interrupted. Smaller size smartphones can slip on the charging tray. In the event of a complaint, the rubber mat can be replaced. Old part number ------ New part number A 223 823 04 00 ----- A 223 823 52 00 A 223 823 27 00 ----- A 223 823 53 00 Note: Please refer to this LI in the "Notes" section of the warranty claim!

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