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Service bulletins for the 2019 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.

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

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Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
LI09.41-P-0787352024-12-23. Service bulletin. ENGINE. Complaint Check engine light illuminated Fault code present in MRG3 control unit P22C900 - The valve of the exhaust gas turbocharger is jammed closed. Cause Check valve in charge air pipe jammed closed. Remedy Replaced charge air line with check valve.
LI03.20-P-0787152024-12-23. Service bulletin. ENGINE. Complaint Low engine oil level warning. Engine oil leak under vehicle. Cause Rear crankshaft radial seal rolled during installation Remedy -Check for external oil leak with visual inspection. -Remove inspection cover on left side of transmission and check for oil in bell housing. -If oil is found in bell housing, remove transmission and determine location of leak. Replace rear crankshaft sealing ring if found damaged or leaking. -If ISA is found to be contaminated with engine oil, replace the integrated starter/alternator.
LI20.40-P-0785932024-11-22. Service bulletin. ENGINE. Complaint Engine cooling fan running for an extended time after switching off vehicle. Cause Optimized thermal management in latest PTCU software. Remedy This is a normal function in the latest PTCU software. Engine fan will operate for up to 20 minutes after ignition is switched off. Note: Repair work should only be performed if a clear malfunction is identified
LI15.40-P-0779472024-10-18. Service bulletin. ELECTRICAL 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.
LI07.61-P-0707072024-06-01. Service bulletin. ENGINE; FUEL/PROPULSION SYSTEM. The customer complains of a check engine light (CEL) on. May also complain of the engine running roughly and/or a loss of power. Multiple Causes Remedy Please see the document "Remedy Instructions" in attachments. For MY19+ G63 there may be an alternate solution available. Please reference LI07.61-P-076755 before performing the steps in this LI.
NCU-20221000052023-04-05. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has determined that the affected vehicles may not meet current On Board Diagnostics (“OBD”) emissions specifications. Under certain conditions, the permanent OBD fault code memory of the 48V ISG control unit may not activate. What We’re Doing MBUSA will conduct a voluntary Emission Recall Campaign in which an authorized Mercedes- Benz dealer will update the software in the affected vehicles.
LI20.10-P-0753742022-12-05. 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.
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
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"" "
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
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
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.
LI07.61-P-0705592019-12-23. Service bulletin. ENGINE AND ENGINE COOLING. All MY18/19 AMG Vehicles Equipped with STAR2.3: Engine May Not Automatically Restart
SC-20190500162019-07-15. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE. Replace left and right tailpipe trim
LI54-21-P-0620062019-07-08. Service bulletin. ENGINE AND ENGINE COOLING. C63/GTx 177/178 Check Engine Light on with Misfire DTC's. Engine Running Roughly
LI54 21-P-0620062019-04-15. Service bulletin. ENGINE. C63/GTx 177/178 Check Engine Light on with Misfire DTC's. Engine Running Roughly
LI54 21-P-0620062019-04-15. Service bulletin. ENGINE. C63/GTx 177/178 Check Engine Light on with Misfire DTC's. Engine Running Roughly
LI07 70-P-0662762019-04-15. Service bulletin. ENGINE. Check Engine Light is on with DTC P030185/ P030685 for misfire cylinder 1 and 6.
LI07 70-P-0662762019-04-15. Service bulletin. ENGINE. Check Engine Light is on with DTC P030185/ P030685 for misfire cylinder 1 and 6.
LI49 10-P-0665592019-04-08. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. BR190: Exhaust system noises
LI54 21-P-0620062018-12-17. Service bulletin. ENGINE. C63/GTx 177/178 Check Engine Light on with Misfire DTC's. Engine Running Roughly

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