2019 Mercedes-Benz AMG GT

On July 27, 2026, while driving my 2019 Mercedes-Benz AMG GT 63 under normal conditions, the vehicle suddenly displayed a suspension warning stating, “Malfunction — Drive at Max. 50 mph.” The warning appeared while the vehicle was in motion; I had not received this suspension warning before the incident. I photographed the warning when it occurred and presented the vehicle to an authorized Mercedes-Benz dealership for diagnosis and repair that same day. On July 30, the dealership confirmed in writing that the vehicle had a leaking front air strut and required replacement of the front air strut. The dealer advised that the required part did not have an established arrival date. As of August 24, the vehicle remains at the authorized dealership and has not been returned to me. I consider this a safety concern because the suspension malfunction occurred without prior warning while the vehicle was being driven and was serious enough for the vehicle itself to instruct the driver not to exceed 50 mph. A failure affecting an air-suspension component during operation raises concern regarding vehicle ride height, stability, handling, and the ability to safely operate the vehicle at normal highway speeds. The failed component and vehicle are presently in the possession of the authorized Mercedes-Benz dealership and should therefore be available for inspection. The condition has been confirmed by the dealership as a leaking front air strut requiring replacement. The vehicle has a significant prior repair history that includes a documented steering-malfunction warning, drivability complaints, vibration, repeated check-engine warnings, and extensive mechanical repairs. I am not asserting that each prior condition shares the same cause as the present suspension failure, but I am reporting that history because it may be relevant to NHTSA's evaluation of the vehicle's safe operation. I have retained the contemporaneous photograph of the suspension warning, the dealership's writ

NHTSA ID

11759268

Incident

Jul 27, 2026

Recall 2024100002 for my 2019 Mercedes-AMG GT 53 is listed as “Completed” in the manufacturer’s system, but the dealer’s service record from November 2024 clearly states that the recall part was on backorder and the repair was not performed. There is no later record of the recall ever being completed. After the recall was marked “Completed,” multiple paid repairs were performed in the same system, including extensive electrical and engine-related work, totaling several thousand dollars. Warning messages and check-engine lights continued to appear, and the underlying issue was never properly resolved. The dealer repeatedly cleared fault codes and performed symptom-based repairs without identifying or correcting the cause. In 2025, the dealer also presented a very high repair estimate related to the same components affected by the recall. This raises concerns that safety-related repairs may have been converted into paid work while the recall remained incomplete. The vehicle was also marked “Disabled” by the dealer, even though it remained drivable. Release of the vehicle was delayed without a clear explanation. The dealer has not provided any confirmation that the recall was actually performed. The manufacturer acknowledged receiving my concern and forwarded it to the dealer, but no one has responded for several weeks. The unresolved status of this recall and the repeated issues affecting the electrical, engine, and propulsion systems raise concerns of a safety defect and possible recall non-compliance. I am requesting that NHTSA review the recall completion status and investigate whether the required safety remedy was performed correctly or reported inaccurately.

NHTSA ID

11699400

Incident

Oct 13, 2025

The steering column sticks in the up position. The electric motor will not move up or down. Not being able to correctly adjust the height of the steering column is a safety issue.

NHTSA ID

11516160

Incident

Apr 8, 2023

Complaint During part of the steering movement, it feels heavier or more difficult to steer in the same spot every time. OR Rattling, humming, dry sliding/gravel noise from the electric steering system when steering (see attachment). Complaint does not impact the ability to safely steer or control the vehicle. Cause Ball screw drive (KGT) of electric steering damaged by: 1. External force due to: ‑ Hitting the curb/posts with the front wheels. ‑ Driving over obstacles (e.g. pothole/ threshold/ speed bump/ gully) at an inappropriate speed. 2. Corrosion/ water ingress through a damaged boot (see attachment). ‑ Cracks (1) ‑ High pressure cleaner (2) ‑ Animal bite (3) See various examples listed in the attachments for examples of outside influence. Remedy Remove boot clamps closest to steering gear housing on both left and right (as seen in "Steering Rack Boot Clamp Location"). Pull back boot and inspect for rust, broken end stops, water, or any other anomalies. Replace electric steering. Note: Steering gears replaced due to outside influence or damage must not be claimed under warranty!

Complaint 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5. Cameras 6. Other Park Topics. Cause Various root causes Remedy See attached diagnostic guide.

Complaint Clanking noise from the area of the speakers in the doors. Cause Under analysis. Remedy To narrow down the cause, first of all remove the door trim. • If the noise continues to occur even with the door trim removed, then continue the diagnosis working towards the speaker and if necessary, create a TIPS case with an informative video as an attachment. Information: Please refer to this document in the warranty claim and, after completing diagnosis, select the damage code corresponding to the component part that caused the problem. • If the noise stops when the door trim is removed, please proceed in accordance with LI72.10-P-067691. Information: In this case, do not use a damage code for the speakers in the warranty claim!

Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz, has determined that on certain MY 2019-2021 C-Class, G-Class, GLC, GT, S-Class (205, 463, 253, 190 & 222 platforms) vehicles, the engine control unit software does not correspond to current production specifications. It is therefore possible that on-board diagnostics and/or exhaust gas emissions requirements may not be fulfilled.

Complaint Check Engine Light ON with DTC P012800 "The Coolant Temperature is Below the Specified Temperature" active and/or stored in the ME (N3/10). There are no drivability concerns related to this complaint. Cause Root cause varies Remedy Prior to performing any repairs for this complaint: With a cold engine, pressurize the high temp coolant circuit and while it's under pressure, release the cap on the low temp coolant circuit and check if the pressure drops right away or not. If the pressure drops, the lower coolant hoses are swapped. Correct this, fill, bleed and test drive the vehicle. If the complaint returns, then continue with the steps below. IMPORTANT: Use VMI to check for the following emission extended warranty –> Engine Thermostat (incl. software update) MY19-23, Various Models and Platforms (167, 190, 205, 213, 217, 222, 223, 232, 253, 290, 463) If the vehicle is covered under the above emission extended warranty, please perform steps outlined in the accompanying NCU prior to those outlined in this document. If vehicle is not covered under the above emission extended warranty or the complaint continues to occur, then proceed as follows: Check for available software updates to the ME (N3/10). If updated software is available, perform the update, clear the DTC and the perform each of the "WARM START" and "COLD START" test drives listed below twice. If the code does not re-appear then release the vehicle. If there is no new software available OR the DTC returns after the test drives then perform the following steps: • Drain the coolant through a fine mesh sieve and check for signs of debris. Additionally, inspect the coolant reservoir for debris. If any debris is found take pictures of the reservoir and the mesh filter and "flush" the system at least 2-3 times to clear as much of the debris as possible • Replace the thermostat and bleed the system as outlined in AR20.00-P-1142-04A, evacuate the system for 20-30 minutes instead of the 5 minutes specified in step 22 • NOTE: Please use all the tools specified in the AR document. The DTC will continue to populate if the circuit is not properly bled • NOTE: There are two valid thermostats to choose from in the parts section of this LI. Please verify which PN is applicable for the vehicle being worked on via XENTRY Parts Information • After bleeding the system clear the DTC and perform each of the "WARM START" and "COLD START" test drives listed below twice. If the DTC does not reappear after the tests, release the vehicle If the ME (N3/10) software is up to date, the thermostat has already been replaced, and the complaint persists open a TIPS case and attach the following documents: • Initial quick test • ME (N3/10) control unit log • The results of an R48 test from a “yes” response and from a “no” response • Pictures of the coolant reservoir and mesh sieve (mentioned above) WARM START · Begin with the engine coolant temperature at approximately 50 degrees C · Activate the AC system, if defrost is not in use open the windows · Drive the car normally until a coolant temperature of 75 degrees C is achieved · Depress the accelerator pedal 50% for ~5 seconds (partial acceleration) · Let off the accelerator pedal and let the car coast for ~10 seconds · Continue to drive the car normally COLD START · Drive for ~7 miles (normal driving) · Shut off the engine in a parking lot (or similar), wait 30 seconds, then restart and continue driving · Depress the accelerator pedal 50% for ~5 seconds (partial acceleration) · Let off the accelerator pedal and let the car coast for ~10 seconds · Continue to drive the car normally

Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end). The noise is heard once in each instance when changing direction of travel. Note: Sound file in attachment Cause If the complaint is eliminated by experimentally loosening the outboard collar nut (by 1 turn), the problem is due to cracking of the microweld between the wheel bearing inner race and the joint housing of the side shaft. Note: The collar nut must always be replaced after being loosened. See also LI33.20-P-078406 Remedy Coat contact surface of side shaft with wheel bearing with Molykote paint. To do this, proceed as follows: 1. Remove side shafts 2. Clean contact surface A (see image file in attachment "Outer joint housing before") before coating with Molykote, using "spirit" (free of dust and grease) 3. Coat contact surface A (see image file in attachment "Outer joint housing after") with Molykote and leave to dry for "one hour" in removed condition 4. Reinstall side shafts Note: Before using the antifriction coating (Molykote), stir it or shake it thoroughly for (at least 1 minute).