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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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Bulletins, newest first
LI22.10-P-0710552021-05-03. Service bulletin. ELECTRICAL SYSTEM. In the quick test, faults P0A1402 and/or P0AB602 are stored in the Drive Unit, electrical fault or open circuit (signal error) in actuation system. Remedy: Replace both acceleration sensors for the engine mounts
LI82.85-P-0713942021-03-29. Service bulletin. EQUIPMENT:APPLIANCE:TV/RADIO/SPEAKERS; ELECTRICAL SYSTEM. In XENTRY diagnosis, the message "MBUX multimedia system control unit is defective (hard drive, internal fault)" appears while attempting to communicate with the MBUX multimedia system (A26/17)
LI54.10-P-0696982021-03-29. Service bulletin. ELECTRICAL SYSTEM. Complaint: 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 Cause: Cause 1: Software causes intermittent no starts with fault B183387 in DC/DC converter N83/1 Cause 2: Software causes Permanent no starts with fault B183349 and B183371 in 48V battery G1/3. Cause 3: Hardware short circuit in 48V system causes fault B183319 in 48V battery Cause 4: 48V battery detects abnormality and disconnects causing additional symptoms: Limp Home Mode, overheating, A/C not blowing cold, or loss of acceleration This cause will always have fault code in G1/3: B183371 but will Not have B183349. 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. Check software version in 48V battery via quick test. If 19/46 000 replace only 48V battery (regardless of other faults)
LI18.00-P-0724762021-03-29. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION. Message in instrument cluster "Engine Oil Level - Reduce Oil Level". Engine oil level too high even though oil level appears to be OK when measured with dipstick. Assess oil quality and open PTSS case as necessary
LI88.20-P-0715702021-02-01. Service bulletin. STRUCTURE:BODY; STRUCTURE:BODY:BUMPERS; STRUCTURE. Front bumper/facia fit above headlamps
LI54.10-P-0696982021-02-01. Service bulletin. ELECTRICAL SYSTEM. Functional impairment of 48 V on-board electrical system
NCU-20200800052020-09-21. Service bulletin. ENGINE; ELECTRICAL SYSTEM:SOFTWARE. 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.
LI88.20-P-0715702020-09-21. Service bulletin. STRUCTURE:BODY:BUMPERS. Front bumper/facia fit above headlamps
LI82.85-P-0714532020-09-21. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); COMMUNICATION. Incorrect time and/or instrument cluster message "SOS, service not activated" and/or Mercedes Me connect services nonfunctional
LI67.30-P-0713732020-07-27. Service bulletin. VISIBILITY:GLASS, SIDE/REAR; EQUIPMENT; STRUCTURE. Wind noises in area of mirror triangle at front doors as of 120 km/h (75 MPH). Possible noise due to minimal thickness of sealing rail. Replace sealing railing and adjust side windows.
LI82.70-P-0710242020-07-27. Service bulletin. EQUIPMENT:ELECTRICAL. The mobile phone address book is not transferred completely to the multimedia system (COMAND or MBUX). In some cases, the call list shows just the telephone numbers but no names. The problem only occurs in conjunction with the iPhone and software version iOS 13.x.
LI54.30-P-0704822020-07-27. Service bulletin. EQUIPMENT; POWER TRAIN:AUTOMATIC TRANSMISSION; ENGINE; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; ELECTRICAL SYSTEM:SOFTWARE. The check engine indicator light in the instrument cluster may be illuminated with one of the following fault codes: P261029, P02FF85, or P02FF02 stored in the engine control unit (N3/10). The time in instrument cluster is implausible due to an internal reset. If no other complaints exist then check for and perform any available software updates for the following control units: - Motor electronics (N3/10) - Powertrain control unit (N127) - Instrument cluster (A1) If all three control units have the latest software installed and the complaint continues to occur then proceed with replacement of the instrument cluster (A1) Should the complaint re-occur after the instrument cluster has been replaced then open a PTSS case with the following information: - Control units logs for the ME, PTCU, and IC - Initial quick test
LI91.25-P-0713142020-07-27. Service bulletin. SEATS; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. When the dynamic seat is activated, the tensioning straps on the seat backrest frame may creak. The tensioning straps are in contact with the seat backrest frame and as a result, a creaking noise may occur. Apply lubricant (Krytox) between the tensioning strap and the seat backrest frame.
LI54.65-P-0712672020-07-27. Service bulletin. ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:SOFTWARE; EQUIPMENT. Fault code B223209 is logged as "stored" in the parking control unit.
LI54.21-P-0706582020-07-27. Service bulletin. AIR BAGS; ELECTRICAL SYSTEM. A fixed SRS message is displayed in the instrument cluster. Cause is not safety-relevant and does not affect function of safety systems.
LI54.30-P-0704822020-06-22. Service bulletin. ENGINE. Check engine indicator light active and fault code P261029/P02FF85/P02FF02 stored in engine control unit
P-SC-20200200012020-03-23. Service bulletin. TIRES; EQUIPMENT:OTHER:LABELS. Information Label on Tire Sealant
SC-20191100032019-12-23. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. Update sound system control unit software
LI72.20-P-0705562019-12-23. Service bulletin. EQUIPMENT. EASY-Pack liftgate does not fully open
P-SC-20191100032019-12-23. Service bulletin. EQUIPMENT:ELECTRICAL. Update sound system control unit software

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