2021 Mercedes-Benz AMG GLE53

An authorized dealer returned a vehicle with loose hardware in a moving mechanical track, posing a risk of mechanical failure or distraction while driving.

NHTSA ID

11737556

Incident

Oct 2, 2025

According to the dealer, there are fault codes in the system for Transmission control unit failing. Thats what caused the vehicle to go into "limp" mode... That needs to be replaced. In an instant, the warning lights and reduction in power occurred simultaneously. The car slowed down and had to coast to shoulder of the highway crossing multiple lanes of traffic. The warnings that came on said “car cannot shift”, “battery failure warning” and when stopped; “do not restart the car.” The shoulder was very narrow and we could have easily been hit by the cars passing at high speeds on the beltway. We had to wait 2 hours for Mercedes roadside assistance to arrive. The dealer is saying it will be $6,000 to repair this.

NHTSA ID

11707885

Incident

Dec 25, 2025

Engine harness wires insulation is falling apart very early after 3 years. It’s causing arching inside the insulation. Issues is from overheating and can cause a fire. Isolation needs to be upgraded and wire harness needs replaced.

NHTSA ID

11645796

Incident

Jan 1, 2025

Vehicle unexpectedly lost power on a major highway. Limped into a service station, called for a tow truck. Several days later vehicle was repaired with a bill of $2800. Four weeks later, while driving, check engine light comes on. Contact dealership that completed repairs, brought car in. Now it’s the 48V Hybrid battery needs to be replaced, $4000. Based on some cursory research, this is a known problem in these cars. Mercedes Benz needs to be held accountable. The car was purchased brand new three years ago.

NHTSA ID

11622517

Incident

Oct 26, 2024

Purchased as a CPO directly from a local dealership. Vehicle has experienced multiple (10+), seemingly random failures of the Electronic Stability Control, Blind Spot Assist, Lane Keeping Assist and Active Break Assist under varied driving and weather conditions. On two separate occasions (one at 15+ mph and the other at 65+), these system failures were accompanied by a brief "limp mode" and immediate total loss of acceleration. The most recent loss-of-acceleration event occurred during lunch hour traffic on the highway, at highway speeds. The vehicle has been taken to the dealership to address these issues on 3 separate occasions. Visit #1: the communication fault codes were noted by the technicians, but they could not replicate the issues. The faults were cleared and the vehicle service was deemed complete. Visit #2 (3 days later and the first instance of acceleration loss): report from service department reads almost identical to that of Visit #1 except the notation that "...found several stored faults for communication with engine control unit." Again, the issues could not be replicated and the faults were cleared. Viewed as an unacceptable response by the consumer, the dealership retained the vehicle for further troubleshooting with the follow-on report noting, "Found no socket tension at Sockets 27 and 28 to PTCU. Removed and replaced sockets 27 and 28 at ME connector 6." The faults were, again, cleared and the vehicle was returned to the owner. Visit #3 (roughly 5 weeks after last visit and the second instance of acceleration loss, this time on the highway): The same complement of warning lamps illuminated, the car lurched, and there was zero acceleration. The vehicle was navigated to the highway's shoulder without incident and shut down. After 5+ minutes, the vehicle was restarted and acceleration functioning had returned. It was immediately driven to the dealership where it currently awaits repair.

NHTSA ID

11539114

Incident

Aug 10, 2023

We bought this GLE AMG 63 new, it has only 1100 miles and we have had two 48 V batters replaced; they just towed it again to the dealer 22 March because it needs yet another 48V battery; the techs say it’s a design problem but there is nothing they can do except get “approval” to have the 48V battery replaced. It has also shut down while driving causing us to pull over on freeway; We don’t five it (1100 miles) because we are concerned about safety issues from the 48V battery failing at unexpected times; firs, overheating and battery coolant issues…etc. We believe this falls under the Lemon law and should be recalled. Thank you for your time and I look forward to your feedback.

NHTSA ID

11513359

Incident

Mar 22, 2023

When vehicle is driven 70 mph and above the drive side of vehicle is making a whilst noise by ear of the driver, that is coming into the car. The gas cap door is not sitting flush with the body of the vehicle.

NHTSA ID

11512252

Incident

Jan 1, 2023

The contact owns a 2021 Mercedes-Benz GLE53 equipped with Continental Tires, Tire Line: Sport Contact, Tire Size: 255/40/ZR21, DOT: (Unavailable). The contact stated that on several occasions while driving 30 MPH on wet pavement at low speeds, the vehicle started to shake, and a loud abnormal sound was heard in all four tires. No warning light was illuminated. The vehicle was taken to the dealer where it was diagnosed that the tire assembly needed to be replaced; however, there was no repair for the failure. The manufacturer was notified of the failure and the contact was advised to call the NHTSA Hotline. The failure mileage was approximately 18,000.

NHTSA ID

11504709

Incident

Jan 12, 2022

Mileage

18,000 mi

This NCU replaces the prior NCU issued on May 15, 2025, and contains additional MY 2023 and MY 2024 vehicles which are highlighted below. In our continuing efforts to ensure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA, LLC (“MBUSA”) is extending the warranty coverage on the Diagnostic Module for Tank Leakage detection (DMTL) in certain Model Year (“MY”) vehicles listed below from the original New Vehicle Limited Warranty of 4 years/50,000 miles to 10 years/120,000 miles (vehicles certified as LEV II) and 15 years/150,000 miles (vehicles certified as LEV III), whichever occurs first, for the following condition: •Under certain circumstances, the DMTL may trigger erroneous Diagnostic Trouble Code (DTC) entries that may result in the illumination of the Check Engine Malfunction Indicator Lamp (‘MIL’).

Complaint CEL light on with no drivability concerns. Cause Signal timing error. Remedy 167, 465: SW has been released. Update the FSAM to the latest SW version. 290, 118, 243, 247: Software is still in development. This fault code does not cause a drivability concern and will clear itself within 2-3 key cycles. The vehicle can be released back to the customer.

Complaint Noise from front end attributable to steering gear. Cause During diagnostics of a front end noise, workshop is under the impression the noise is coming from the steering gear. Remedy Workshop diagnostics point to the steering gear as the root cause of the noise and the below LI's and items have been ruled out. • LI46.35-P-067339 - "Rattling or Humming Noise When Steering" • LI46.35-P-071461 - "Check Tie Rod Outer Joint of Steering Gear" • LI46.10-P-077391 - "Knocking Noise In The Area Of The Steering Gear or Steering Column Tube When Braking Or Moving Off; The Steering Wheel Can Also Be Felt To "Crack"" • If the noise is described as "clacking" or "knocking" and the thrust element in the steering rack has NOT been checked yet, please perform a check and subsequent adjustment, if necessary, as detailed in AR46.20-P-0601ME. If the above has been completed and the noise is still present, please continue with the below: • Video underneath the vehicle with clearly audible noise. • Video inside the vehicle with clearly audible noise. • Vehicle checked for history of collisions. • List of other checked components (suspension, drive line components, wheel bearings, etc...). • Check integrity of dust boots and dust boot clamps. Ensure no water has entered into the steering rack. • Along with the audible noise, does the feel/noise change through only a certain part of the steering arc sweep? • Provide the thrust element before and after readings. If the above is completed and no findings are noted, please open a TIPS case to the Body/Chassis/Entertainment inbox.

Complaint Crackling and cracking noise from the outer wheel on the front axle when cornering Cause The noise is generated by a micromovement on the contact surface between the rim and the brake disk (wheel bolt group) and may be intensified by potential soiling. The more lightweight rim (AMG forged rim) transmits the noise louder; in the case of cast rims, the noise is generally not perceptible. This is not a technical defect, but rather a complaint concerning comfort. Safe operation of the vehicle is ensured at all times. Remedy Important note: The operations described below do not represent a permanent remedy in every case. The noise may reoccur again after an indefinite period of time; sanding the rims with abrasive media multiple times is not permissible. Only cleaning using the Hazet tool 4960-160 (recommendation) can be performed without any concerns each time the wheel is changed or if the complaint reoccurs. Replacing the parts (rim, wheel bolts, wheel bearings, wheel hub, brake disk) is not expedient in the event of this complaint. ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Clean the components of the wheel bolt connection according to the WIS instructions Sand down the rim and brake disk bowl by performing the following steps: • Manually sand rim (old design only) in area of water drain bores (Figure 1; item A), approx. 1.5 cm left and right of water drain bore (Figure 2) Note: Use abrasive paper with grit size 80. The grooving in this area should no longer be visible (sand down approx. 0.1-0.2mm) • Also sand brake disk bowl using emery cloth or abrasive paper with a grain size of 120 • For vehicles equipped with the AMG ceramic brake system (B07), abrasive paper may not be used for cleaning on the brake disk side Note: Do not use any cleaning agent when cleaning on the rim side. Cleaning using abrasive paper with a grain size of 80 will suffice. Do not apply any grease, lubricant or paste after cleaning The brake disk bowl should be "bare metal" in the area of the imprints made by the hole (Figure 3)

Complaint Hand detection system – malfunction / vehicles with code 266 Fault message in instrument cluster: "Active Emergency Stop Assist not available" "Active Lane Keeping Assist not available" "Active steering assist not available" Cause Possible causes: Hand detection mat, hand detection control unit, contacts, and electrical feed line. Remedy In the event of a customer complaint and fault code in IDC control unit: U186B29 in IDC223 or fault code U0429E0, U042941, U042929, U042902, U0429E1 in IDC213 or fault code in HOSWD control unit: B1E7614 Check: Please do not replace the HOSWD control unit. Please flash the new SW and perform the SCN coding for the HOSWD control unit (N179/1) (available from July 2026). The software can be flashed onto all HOSWD213 with HW number A0009011522 and all HOSWD223 with HW number A0009011422. Please also flash the SW for the IDC control unit (N62/4), if possible (only applies to HOSWD223). Erase fault memory Remedy: Turn on the ignition or start the engine without touching the steering wheel. If, after 10 seconds without touching the steering wheel, one of the three fault messages appears on the instrument cluster: Check the contacts and feed lines in the steering wheel by means of a visual inspection for damage, crimp connections, loose connections, etc. (example in picture 2 and 3). If there is visible damage -> replace the steering wheel electronics or the feed lines. If there is not any visible damage -> replace the steering wheel rim. If a yellow message does not appear on the instrument cluster within 10 seconds: Grasp the steering wheel fully with both hands, including the chrome molding at the 6 o'clock position (see picture 1). If the fault is triggered by grasping the steering wheel rim or pressing the clip at the 6 o'clock position, check the contacts and feed lines in the steering wheel by means of a visual inspection for damage, kinked connections, loose connections, etc. (example in picture 2 and 3). Check the ground connections (screw connections and cables to the steering wheel rim); if necessary, retighten the screws/bolts and check for corrosion (picture 4). If there is visible damage -> replace the steering wheel electronics or the feed lines. If there is not any visible damage: Replace the steering wheel rim. Please do not replace the HOSWD control unit. A TIPS case should be created if fault profile is unclear. In the event of a customer complaint and a further fault code in HOSWD: B1E7713: Check the ground connections (screw connections and cables to the steering wheel rim); if necessary, retighten the screws/bolts and check for corrosion (picture 4). B1F1F04: Check the control unit of the hand detection system; if necessary, replace this with the control unit from a donor vehicle (make sure that the hardware part numbers are identical).

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).