Service bulletins for the 2021 Mercedes-Benz AMG GT
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
244 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
By topic
| LI54.10-P-069698 | 2023-01-05. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. Complaint This LI does Not apply to 223 or 206 which use a different generation of 48V systems. Please follow the relevant guided tests for the 223 and 206. For 223 with fault code B1FCB97 follow LI54.10-P-073164. Various causes are possible. The faults listed in the various causes do not all have to be present at all times. Some of these complaints may overlap. Rely on the faults listed in the Cause section for identifying the correct Remedy. 1. No start 2. Yellow or red instrument cluster message for 48 V on-board electrical system battery (G1/3) 3. Limp home mode, overheating, A/C not blowing cold, or loss of acceleration 4. Check Engine Light Cause Cause 1: Software causes Intermittent No Starts with fault B183387 in DC/DC converter N83/1 Cause 2: Software causes Permanent No Start with fault B183349. May also have fault B183371. Cause 3: Hardware short circuit in 48V system causes fault B183319 in 48V battery. May also have fault B183371. Cause 4: Internal 48V battery Peltier cooling element failure causes fault B183397 |
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| LI46.15-P-063353 | 2023-01-05. Service bulletin. 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. |
| LI20.10-P-075374 | 2022-12-05. Service bulletin. ENGINE AND ENGINE COOLING. Complaint Red coolant warning in instrument cluster. Fault codes U019F00 or U019F87 current/stored in MRG1 control unit. Cause Various causes Remedy Perform guided test for fault code U019F with XENTRY diagnosis. Verify the following connections are clean and tight. Correct any problems and retest pump actuation: -12V plug at M75/11 -48V plug at M75/11 -48V connector X192/4 -Connections at 48V fuse box F153/2 -Sockets 1,2, and 5 at connector 2 of MRG1 control unit -M75/11 circuit 41 ground If actuation and above connections are OK, but resistance between M75/11 and engine block is less than 2 ohms or heat shield touching coolant pump, proceed with below steps. |
| LI88.20-P-071570 | 2022-11-04. Service bulletin. STRUCTURE. Complaint Bulging of front bumper above headlamps (see attachment). Function of headlights not blocked or impaired. Cause Bonding between bracket and bumper may be separating. Remedy Detach front bumper and check whether the brackets can be easily removed without damaging or deforming the bumper. |
| LI54.10-P-069698 | 2022-11-04. Service bulletin. ELECTRICAL SYSTEM. Complaint This LI does Not apply to 223 or 206 which use a different generation of 48V systems. Please follow the relevant guided tests for the 223 and 206. For 223 with fault code B1FCB97 follow LI54.10-P-073164. Various causes are possible. The faults listed in the various causes do not all have to be present at all times. Some of these complaints may overlap. Rely on the faults listed in the Cause section for identifying the correct Remedy. 1. No start 2. Yellow or red instrument cluster message for 48 V on-board electrical system battery (G1/3) 3. Limp home mode, overheating, A/C not blowing cold, or loss of acceleration 4. Check Engine Light Cause Cause 1: Software causes Intermittent No Starts with fault B183387 in DC/DC converter N83/1 Cause 2: Software causes Permanent No Start with fault B183349. May also have fault B183371. Cause 3: Hardware short circuit in 48V system causes fault B183319 in 48V battery. May also have fault B183371. Cause 4: Internal 48V battery Peltier cooling element failure causes fault B183397 Cause 5: This will Always have fault code B183371 but different from cause 2 and 3 -- it will Not have B183349, B183319, or any other faults in the 48V battery. This will only have fault B183371 in 48V battery. Cause 5 is from the 48V battery detecting an abnormality which then causes the 48V battery to disconnect itself. The disconnected 48V battery then causes subsequent symptoms: Limp Home Mode, overheating, A/C not blowing cold, or loss of acceleration Cause 6: Check Engine Light with fault P0606F1 in the N127 PTCU Remedy Note: each of these remedies correspond to a specific cause. Make sure to match correct Cause with Remedy. Remedy 1: 1. Update software in G1/3 (48V battery) using newest Xentry software and AddOns 2. Road test and release vehicle if no further symptoms |
| NCU-2021060009 | 2022-11-04. Service bulletin. ELECTRICAL SYSTEM. Mercedes-Benz AG ("MBAG"), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year (“MY”) 2021 GLE/GLS-Class, E-Class, E-Class Coupe/Convertible, CLS-Class and AMG GT (167, 213, 238, 257 and 290 platforms) vehicles, the 48V battery management system software might not meet specifications which could potentially result in one or more of the following circumstances: o Audible tone, and alternating malfunction warning messages in the instrument cluster for Transmission Malfunction, 48V, 12V, and/or the coolant temperature followed by reduced engine output. o The vehicle may not start during initial start-up (ECO start-stop system is not affected). o OBD monitoring functionality may not become active for the battery control unit coolant temperature. What We’re Doing MBUSA will conduct an Emission Service Campaign. An authorized Mercedes-Benz dealer will perform a software update on the 48V battery management system for the affected vehicles. Affected customers will be notified via First Class letter to have the update performed on their vehicle. |
| LI82.60-P-075292 | 2022-10-05. Service bulletin. ELECTRICAL SYSTEM. Complaint Customer states after a bus sleep the SiriusXM category changes from "My Favorites" to "All Stations" or a different category. Sometimes, the "My Favorites" category will be unavailable for the entire drive cycle. Cause Current MBUX Multimedia System (A26/17) software release Remedy Software update of MBUX Multimedia System (A26/17) to E905.4 (in development). This document will be updated once the software is released. |
| LI54.10-P-069698 | 2022-10-05. Service bulletin. POWER TRAIN. Complaint This LI does Not apply to 223 or 206 which use a different generation of 48V systems. Please follow the relevant guided tests for the 223 and 206. For 223 with fault code B1FCB97 follow LI54.10-P-073164. Various causes are possible. The faults listed in the various causes do not all have to be present at all times. Some of these complaints may overlap. Rely on the faults listed in the Cause section for identifying the correct Remedy. 1. No start 2. Yellow or red instrument cluster message for 48 V on-board electrical system battery (G1/3) 3. Limp home mode, overheating, A/C not blowing cold, or loss of acceleration 4. Check Engine Light Cause Cause 1: Software causes Intermittent No Starts with fault B183387 in DC/DC converter N83/1 Cause 2: Software causes Permanent No Start with fault B183349. May also have fault B183371. Cause 3: Hardware short circuit in 48V system causes fault B183319 in 48V battery. May also have fault B183371. Cause 4: Internal 48V battery Peltier cooling element failure causes fault B183397 Remedy Note: each of these remedies correspond to a specific cause. Make sure to match correct Cause with Remedy. Remedy 1: Update software in G1/3 (48V battery) using newest Xentry software and AddOns Remedy 2: 1. Xentry MUST be connected with VCI cable to correctly complete this remedy. 2. Complete guided test for B183349. 3. If guided test completes, vehicle starts, and drive cycles show no further symptoms, release vehicle. 4. If after guided test completes, Xentry states to replace 48V battery, replace only 48V battery. 5. If not, and symptoms are still present open a PTSS case. 6. If communication cannot be established with 48V battery perform physical layer check at 12V wiring to DCDC. If no abnormalities found, replace the 48V battery. 7. If guided test completes but a new fault code is present (such as B183319, B183371, etc.) follow the relevant Cause/Remedy for that fault in this LI. |
| LI46.15-P-063353 | 2022-10-05. Service bulletin. 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. Remedy There are 2 repair procedures to follow depending on vehicle (differentiated according to model and vehicle manufacturing date) 1. Replace repair kit for steering column height adjustment 2. Perform software update of driver's seat control unit |
| LI20.10-P-072886 | 2022-09-07. Service bulletin. ENGINE AND ENGINE COOLING. Complaint CEL on with Code P012800 "The Coolant Temperature is Below the Specified Temperature" Cause Under investigation. This is not an issue that affects drivability or performance and is not a safety concern. The vehicle remains safe to operate with this code, but the measures listed in the "Remedy" section are recommended. Remedy Due to formatting issues please see "remedy instructions" in attachments |
| LI82.85-P-075044 | 2022-08-04. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. Complaint The Apple Carplay interface cannot be controlled via the center console touchpad or the right-hand steering wheel touchpad. Cause A setting on the iPhone may prevent control via the touchpad Remedy To remedy on the affected iPhone, navigate to "Settings" -> "Accessibility" -> "Touch" and turn the "BackTap" option OFF. |
| LI46.15-P-063353 | 2022-08-04. Service bulletin. STEERING; EQUIPMENT; ELECTRICAL SYSTEM:SOFTWARE. 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 manufacturing date) 1. Replace repair kit for steering column height adjustment 2. Perform software update of driver's seat control unit |
| SC-2021070006 | 2022-08-04. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ENGINE AND ENGINE COOLING. Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year 2021 CLA (118 platform), GLE/GLS (167 platform), C-Class (205 platform), E-Class (213 platform), GLA (247 platform), GLC (253 platform), AMG GT (290 platform) and G-Class (463 platform) model series vehicles, the installed ignition coils may not correspond to current specifications. This may result in misfire, reduced engine output, and illumination of the Malfunction Indicator Lamp (MIL). What We’re Doing MBUSA will conduct an Emission Service Campaign in which an authorized Mercedes- Benz dealership will replace the ignition coils. |
| P-SC-2022030014 | 2022-06-02. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz, has determined that on certain Model Year (“MY”) 2021 CLA-Class, GLA-Class, GLE-Class, GLS-Class, A-Class, C-Class, E-Class, GLB-Class, CLS-Class, and AMG GT 4-doors/Coupe (118, 167, 177, 190, 213, 238, 247, 257, and 290 platform). The possibility exists that the information regarding radar sensor MMRV1 may be incorrect, and therefore the printed operator’s manual may not align with the internal vehicle specifications. What We’re Doing MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will check and replace the printed operator’s manual, if necessary. |
| LI18.00-P-073114 | 2022-06-02. Service bulletin. ENGINE AND ENGINE COOLING. Complaint Message in instrument cluster "Engine Oil Level - Reduce Oil Level" Cause Under analysis Remedy Record the oil flow quantity, drain & replace oil, open PTSS case if issues persists. |
| LI91.30-P-074540 | 2022-05-04. Service bulletin. ELECTRICAL SYSTEM; SEATS:FRONT ASSEMBLY:SEAT HEATER/COOLER. Complaint The seat heating for the front seats is nonfunctional, the LEDs on the buttons are however, active. Cause Faulty coding. Remedy 1. Coding of control unit N10/8 - Rear signal acquisition and actuation module (SAM-H). 2. Commissioning of front seat heating. If problem persists, please open a PTSS case with a short video showing complaint |
| SC-202201001 | 2022-04-05. Service bulletin. ELECTRICAL SYSTEM. Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz, has produced certain MY 2021-2022 A-Class, CLS-Class, E-Class, GLA-Class, GLB-Class, GLE-Class, GLS-Class, and GT-Class (167, 177, 213, 247, 257, and 290 platform) vehicles without the augmented reality camera (“ARC”), as disclosed at the time of sale to the vehicle purchaser. As a result, the ARC and "Dash-cam" functions are currently not enabled. What We’re Doing MBUSA will conduct a Service Campaign where an authorized Mercedes-Benz dealer will retrofit the augmented reality camera to the vehicle and enable the ARC and “Dash-cam” functions on applicable vehicles. |
| LI77.25-P-074448 | 2022-03-04. Service bulletin. STRUCTURE. Complaint Whistling noise/wind noise in area of fixed rear spoiler at speeds as from approx. 50mph (80 kph) Cause Possibly due to wind interacting with the spoiler Remedy The rework is ONLY VALID for vehicles in model series 190 with code U11 + M032 (Black Series) from production startup up to and including production date November 11 2021 1. Disassemble upper spoiler (Pos. 825 - A1907932600) (see Picture 1). 2. Use alcohol-based cleaner to remove all dust and grease from bonding area (see Picture 2). 3. In each case (left and right) and starting at Z in the Y-direction, stick two approx. 335 mm long strips of seal A1977520098 so that a gap of approx. 10-20 mm remains free around Y0 (see Picture 3). This gap acts as a water drain. 4. Use a roller and approx. 40-50 N to uniformly and carefully press on seal. 5. Assemble spoiler again and tighten screws (left and right) using Loctite 222 and a tightening torque of 10 +/-1 Nm (see Picture 4). |
| LI77.25-P-072764 | 2022-03-04. Service bulletin. STRUCTURE. Complaint The following noise complaints may occur: • Rear spoiler chatters/vibrates when extending/retracting, see video 1. • Rear spoiler creaks when extending/retracting, see video 2. • Loud noise when end stop is reached when retracting, see video 3. Cause Various possible root causes involving hardware and software. Remedy Valid for all X290 (without code U94/U99) and up to and including manufacturing date July 6 2020. 1. Replace rear spoiler (A2907900000). 2. Update software of AMG Drive Unit. If software is already up-to-date, perform SCN coding. |
| LI72.10-P-074316 | 2022-03-04. Service bulletin. LATCHES/LOCKS/LINKAGES. • The flush-mounted door handle could jam or skip while extending and may move in a jerky manner while doing so. • In the area of the paneling section of the door, paint damage could be present (picture 1) and/or an abrasion point could be present at the door handle (picture 2). Cause The door handle could be installed too low in the y direction and/or the z direction (picture 3). As a result, the door handle could brush the door at the paneling section of the door. Check and replace door handle if necessary |
| SC-2022020005 | 2022-03-04. Service bulletin. SERVICE BRAKES, HYDRAULIC; POWER TRAIN:AXLE ASSEMBLY. Bring brake system at front axle to current series production configuration |
| SC-2022010008 | 2022-03-04. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2021-22 A-Class (177 platform), CLA-Class (118 platform), CLS-Class (257 platform), E-Class (213 and 238 platform), GLA-Class, GLBClass (247 platform), GLC-Class (253 platform), GLE-Class, GLS-Class (167 platform), and GT-Class (290 platform) vehicles, the software for the MBUX control unit does not correspond with the latest series production configuration, and subsequently, navigation may not be available. What We’re Doing MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will update the MBUX control unit software. |
| SC-2022010001 | 2022-03-04. Service bulletin. ELECTRICAL SYSTEM:ADAS:DRIVER MONITORING:CAMERA/SENSOR. Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz, has produced certain MY 2021-2022 A-Class, CLS-Class, E-Class, GLA-Class, GLB-Class, GLE-Class, GLS-Class, and GT-Class (167, 177, 213, 247, 257, and 290 platform) vehicles without the augmented reality camera (“ARC”), as disclosed at the time of sale to the vehicle purchaser. As a result, the ARC and "Dash-cam" functions are currently not enabled. What We’re Doing MBUSA will conduct a Service Campaign where an authorized Mercedes-Benz dealer will retrofit the augmented reality camera to the vehicle and enable the ARC and “Dash-cam” functions on applicable vehicles. |
| LI83.57-P-074092 | 2022-02-04. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM; EQUIPMENT; ELECTRICAL SYSTEM. Complaint No longer possible to adjust the temperature at the "Touchscreen Rear" (part of Rear Business Package, code 224) Cause Software error in the head unit. Remedy Warning: Replacing parts does not solve the problem! A software remedy for the head unit is currently in development. As soon as the software remedy is available, this TIPS document will be updated. |
| LI18.00-P-073137 | 2022-02-04. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. Complaint Sporadic warning message in instrument cluster "Engine oil pressure stop switch off vehicle" (or similar) is shown in red on vehicles with low mileage. Cause Directional control valve may stick. Remedy 1- Read off oil level in instrument cluster and correct if necessary. 2- Perform approx. 10-15 engine starts, then clear fault codes. 3- Perform road test with vehicle. If fault code reoccurs during road test: Install new directional control valve. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.