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Service bulletins for the 2020 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.

245 on file from NHTSA, as of 2026-10-19.

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By component

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Bulletins, newest first
LI54.10-P-0696982022-10-05. 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-0633532022-10-05. 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-0728862022-09-07. 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-0750442022-08-04. 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-0633532022-08-04. 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
LI91.30-P-0745402022-05-04. 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
LI77.25-P-0727642022-03-04. 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-0743162022-03-04. 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-20220100012022-03-04. 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-0740922022-02-04. 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-0731372022-02-04. 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.
LI09.00-P-0740932022-01-06. Service bulletin. ENGINE AND ENGINE COOLING. "MY15+ M278 and M157 Equipped Vehicles with Fault Code ""P023400 – Boost Pressure is Too High"" "
LI54.10-P-069682022-01-06. Service bulletin. ELECTRICAL SYSTEM. "Functional impairment of 48 V on-board electrical system "
LI2700P0731242022-01-03. Service bulletin. ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:IMMOBILIZER/PROXIMITY:SENSOR; BACK OVER PREVENTION. Model series 190.4 Anti-theft alarm activates without obvious cause.
LI8285P073387Ver2022-01-03. Service bulletin. EQUIPMENT:ELECTRICAL. The customer may note that the Dashcam feature is inoperable with one of the following complaints.
LI8285P073387Ver2022-01-03. Service bulletin. EQUIPMENT:ELECTRICAL. The customer may note that the Dashcam feature is inoperable with one of the following complaints.
LI8285P073387Ver2022-01-03. Service bulletin. EQUIPMENT:ELECTRICAL. The customer may note that the Dashcam feature is inoperable with one of the following complaints.
LI8285P073387Ver2022-01-03. Service bulletin. EQUIPMENT:ELECTRICAL. The customer may note that the Dashcam feature is inoperable with one of the following complaints:
LI8285P0699612022-01-03. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). Upon selecting navigation, the central display may show the following message: "Map data does not match with your system. Please insert a medium containing the corresponding map data". the navigation menu cannot be opened.
LI8270P0710242022-01-03. Service bulletin. EQUIPMENT:ELECTRICAL. The mobile phone address book may not be transferred completely to the multimedia system COMAND, Audio 20, or MBUX. The contact list may not be fully populated and in some instances, the call list will display telephone numbers but no names.
LI7220P0731402022-01-03. Service bulletin. STRUCTURE:BODY:TAILGATE. The tailgate can only be fully opened by operating it again, multiple times where necessaryor by manually raising tailgate.
LI2700P0731242021-10-25. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; POWER TRAIN:AUTOMATIC TRANSMISSION. Transmission diagnosis using th eIntelligent Predictive Repair (IPR) tool.
LI0761P0707072021-10-25. Service bulletin. ENGINE AND ENGINE COOLING; FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM. M17x.xxx Check Engine Light on with Misfire DTC's
LI20.20-P-0732742021-08-04. Service bulletin. EQUIPMENT; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:ENGINE COOLANT HOSES AND FITTINGS; ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY. Coolant warning in instrument cluster - Leak in coolant line
LI82.85-P-0688462021-08-04. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. "Free browsing, Internet access via Wi-Fi hotspot and Internet radio nonfunctional"

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.