
This Mercedes-Benz technical bulletin LI00.01-P-078887 provides a comprehensive reference for workshops, detailing common acronyms, control unit identification methods, network/wiring architecture groups, and platform-to-baumuster mappings for the 2021 Mercedes-Benz AMG GT.

This Mercedes-Benz technical service bulletin (TSB) L154.65-P-080132 addresses various parking system malfunctions in the 2021 AMG GT, including sensor activations, a "Red Ring Around Vehicle" warning, and "Active Parking and Parking Assist Inoperative" messages.

Mercedes-Benz issued TSB LI82.10-P-078301 for headlamp and fog lamp fogging in the 2021 AMG GT. This document explains that fogging is a natural phenomenon and provides a procedure to clear condensation, distinguishing it from defects.

This Mercedes-Benz Technical Service Bulletin (TSB) L154.65-P-080132 details various parking assist system faults for the 2021 AMG GT, such as "Red Ring Around Vehicle" and "Active Parking and Parking Assist Inoperative" messages. It provides diagnostic guidance for issues related to PARK sensor…

Mercedes-Benz has issued service campaign 2024100016 to update the Engine Control Unit (ECU) software on certain 2021 AMG GT vehicles. This update ensures the ECU software meets current production specifications, preventing potential issues with on-board diagnostics and exhaust gas emissions…

Mercedes-Benz issued TSB L182.10-P-078301 for 2021 AMG GT vehicles experiencing headlamp and fog lamp fogging. This bulletin explains that condensation is often natural but provides detailed procedures for clearing fogged lamps and identifying defective units. Learn more.

Mercedes-Benz TSB L154.65-P-080132 addresses parking assist issues in the 2021 AMG GT, including 'Active Parking and Parking Assist Inoperative' messages, unexpected park sensor activations, and red rings around the vehicle. This guide helps diagnose these complex parking system malfunctions.

Mercedes-Benz has issued Technical Service Bulletin LI20.10-P-072886 for 2021 AMG GT models experiencing a Check Engine Light (CEL) with diagnostic trouble code P012800. This code indicates the engine's coolant temperature is below its specified operating range, potentially requiring a software…

Mercedes-Benz has released TSB L154.65-P-080132 for the 2021 AMG GT, addressing various parking system faults. Owners may experience a 'Red Ring Around Vehicle' or 'Active Parking and Parking Assist Inoperative' message. This guide helps diagnose issues with PARK213, PARK213M, and PARK223 control…

This Mercedes-Benz technical reference guide (LI00.01-P-078887) provides workshops with essential information on acronyms, control unit identification, network architecture, and platform references for the 2021 Mercedes-Benz AMG GT.

Mercedes-Benz has released Technical Service Bulletin L183.30-P-079850 for 2021 AMG GT models experiencing HVAC performance issues, including insufficient cooling or heating. This bulletin outlines diagnostic procedures and warranty claim requirements for technicians.

Owners of 2021 Mercedes-Benz AMG GT vehicles may experience HVAC issues such as the AC not cooling or insufficient heat. TSB L183.30-P-079850 provides diagnostic steps for technicians to address these performance concerns.
My 2021 Mercedes-Benz AMG GT 43, VIN [XXX] , has had a recurring safety issue with the transmission wiring harness and connector X279. Mercedes-Benz said this connector can let water in, which can cause a short circuit, overheating, and a fire risk while the car is parked and off. That is why the vehicle was covered by recall 24V445 / MBUSA Campaign 2024100002. This same issue was already addressed once before in January 2023 under MBUSA Campaign 2022080010 / NHTSA 22V-533, when the connector was checked and reworked and a bracket was installed. Even after that, the car later had to go back again on November 29, 2024 for the newer recall repair, when the original two-part harness was replaced with a one-part harness. The part that concerns me most is that this is not just a routine repair issue. It is a fire risk that can happen while the vehicle is parked with the ignition off. I am also concerned that the recall and service records do not clearly show the exact completion date in the manufacturer’s system. I am asking NHTSA to record this complaint and review the defect history and repair history for this vehicle. I can provide the recall notices, service records, purchase contract, vehicle history report, and the notice I already sent to Mercedes-Benz USA. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
No injuries · No fire · No crash
AVAILABLE FOR INSPECTION UPON REQUEST ISSUE WAS REPRODUCED AT DEALESHIP. ISSUE IS EASY TO IDENTIFY. VEHICULE WAS INSPECTED BY DEALERSHIP, MANUFACTURER IS AWARE. FAULT LIGHT ON DASHBOARD SHOW A FAULT ICON THE 2021 AMG GT BLACKSERIES HAVE AN ACTIVE REAR WING. A PART OF THE ACTIVE REAR WING IS ACTIVE BUT HAS A HIGH FAILURE WHICH AT SOME SPEEDS CAN BE DANGEROUS BECAUSE THE ACTIVE PART IS NOT WORKING AND DO NOT PROVIDE THE DOWNFORCE THAT IT SHOULD BECAUSE OF THE ACTATOR FAILURES. THERE ARE A HIGH NUMBERS OF REPLACEMENT REQUESTED THROUGHT THE MERCEDES NETWORK BUT THEY ARE BEING REPLACED BY THE SAME PART # NOT AN UPDATED ONE TO AVOID FAILURES. SOME OWNERS DO NOT HAVE A REPLACEMENT DUE TO NONE IN STOCKS. THE 2021 IS UNDER WARRANTY BUT AMG MERCEDES HAS NOT , YET, INFORMED OWNERS OF THE POTENTIAL HAZARD. THE ACTIVE PART OF THE REAR WING WHEN FAILED IS SIMPLY NOT RESPONSIVE (NOT MOVING ACCORDING TO SPEEDS OR BRAKING ACTIONS). PLEASE REVIEW THE ISSUE BEFORE SOMEONE GETS HURT. THANK YOU
No injuries · No fire · No crash