2019 Mercedes-Benz G 550

The driver-side door latch on my 2019 Mercedes-Benz G550 is malfunctioning. The door fails to securely close or stay latched, even when shut firmly. This poses a serious safety hazard while driving, as the door may open unexpectedly during motion or remain partially ajar. I have not been involved in any accidents, and the vehicle is well maintained. The issue seems mechanical in nature and affects the structural integrity of the door and its latching mechanism. I contacted an authorized Mercedes-Benz service center and was informed there is no recall. I also contacted Mercedes-Benz USA and am awaiting further response. This is a high-end, relatively new vehicle, and a door latch failure of this kind could lead to injury or worse. I am submitting this complaint to ensure this matter is officially recorded and to urge NHTSA to investigate whether this is a wider defect.

NHTSA ID

11675959

Incident

Jul 3, 2025

Windshield cracked on its own with no motive

NHTSA ID

11548993

Incident

Sep 7, 2023

Lock Differential error message. Mercedes Benz attempted to fix twice but it’s still reporting the error.

NHTSA ID

11447771

Incident

Jul 31, 2021

MY 2019 G550 HAS BEEN TO MERCEDES DEALERS TWICE FOR A "FRONT/REAR DIFFERENTIAL LOCK SYSTEM MALFUNCTION" ERROR APPEARING ON THE DISPLAY SCREEN. ALONG WITH THIS IT SHOWS THE ABS AND ESP ARE BE INACTIVE. EACH TIME AT A MERCEDES DEALER THEY REPLACE PARTS AND SAY IT IS FIXED. IT IS NOT FIXED. THIS WEEK I BECAME STRANDED WHEN I PICKED MY DOG UP FROM THE VET AND THIS ERROR MESSAGE APPEARED, ALONG WITH 'ACTIVE DISTANCE ASSIST INOPERATIVE', 'ACTIVE BRAKE ASSIST FUNCTIONS LIMITED', 'BLIND SPOT ASSIST INOPERATIVE', 'STEERING MALFUNCTION INCREASED PHYSICAL EFFORT' ERROR MESSAGES. THE CAR COULD NOT BE STEERED. I TRIED TO TRADE IT IN AT A MERCEDES DEALER AND THEY TOLD ME THERE IS A RECALL FOR THIS THAT THERE IS NO REMEDY AVAILABLE FOR, SO THEY CAN'T EVEN TAKE THE CAR IN TRADE. THE RECALL # IS 2020020019. NHTSA RECALL # 20V090. THE MANUFACTURER HAS NO FIX FOR THIS PROBLEM. MERCEDES OF NORTH ORLANDO OFFERED TO LOOK AT IT FOR A THIRD TIME BUT THEY ALSO SAID THERE IS NO FIX FOR THIS RECALL, AND WERE UNABLE TO OFFER ME ANY SOLUTIONS. THE ERROR MESSAGES COME ON AT DIFFERENT TIMES. USUALLY WHEN THE CAR IS STARTED. THIS LAST TIME THE STEERING WAS INACTIVE, I TRIED TO BACK OUT OF MY PARKING SPACE AND COULD NOT TURN THE STEERING WHEEL. IT CAN HAPPEN WHEN THE CAR IS IN MOTION OR STATIONARY. THE DEALERS HAVE REPLACED PARTS FOR THE DIFFERENTIAL BUT IT MAKES NO DIFFERENCE.

NHTSA ID

11323949

Incident

May 4, 2020

Mileage

3,350 mi

TL* THE CONTACT OWNS A 2019 MERCEDES-BENZ G550. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 20V090000 (POWER TRAIN, SERVICE BRAKES, HYDRAULIC, ELECTRONIC STABILITY CONTROL) HOWEVER, THE PART FOR THE RECALL REPAIR WAS UNAVAILABLE. THE CONTACT STATED THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 55 MPH AND ATTEMPTING TO EXIT THE FREEWAY, THE VEHICLE VIBRATED AND THE BRAKES ACTIVATED INDEPENDENTLY. THE CONTACT TURNED OFF THE VEHICLE AND RESTARTED AND THE VEHICLE THEN OPERATED AS INTENDED. THE CONTACT STATED THE FAILURE OCCURRED MULTIPLE TIMES. THE CONTACT CONTACTED MERCEDES-BENZ OF ONTARIO (3787 E GUASTI RD, ONTARIO, CA 91761, (909) 212-8400), WHO STATED THAT THE LANE DEPARTURE ASSIST WAS ENGAGED AT THE TIME. THE CONTACT STATED THAT AFTER READING ABOUT THE FEATURE, THE CONTACT LEARNED THAT WHEN THE SYSTEM WAS ACTIVE THE VEHICLE WOULD VIBRATE AND MOVE THE VEHICLE BACK INTO THE EXPECTED LANE. THE CONTACT STATED THAT THERE WAS NO MENTION OF THE BRAKES BEING ACTIVATED WHILE THE FEATURE WAS IN OPERATION. THE MANUFACTURER WAS CONTACTED AND IT WAS CONFIRMED THAT THE BRAKES BEING ACTIVATED WAS NOT A PART OF THE LANE DEPARTURE ASSIST FEATURE. THE APPROXIMATE FAILURE MILEAGE WAS 500. VIN TOOL CONFIRMS PARTS NOT AVAILABLE.

NHTSA ID

11321127

Incident

Dec 1, 2019

Mileage

500 mi

Complaint Customer complaints relating to automatic transmission 725.0 (NAG3 Classic /9G‑TRONIC automatic transmission) and 725.1 (NAG3 facelift/9G‑TRONIC automatic transmission facelift) For faster, more effective and more targeted diagnosis, Intelligent Predictive Repair (IPR) has been developed and integrated into XENTRY Diagnosis. This ensures an automated diagnosis process. Cause As part of the on‑going quality monitoring process and associated quality and damaged part appraisals, a high number of ineffective repairs have been discovered. Such ineffective repairs have a negative impact on all those involved. For the customer, it means high costs and long repair times and for the dealer, it may result in the warranty claim being rejected. Remedy General note: IPR is available for: ‑ NAG3 Classic (automatic transmission 725.0) ‑ NAG3 Classic ‑ AMG sport model (AMG 43 and AMG 53 with converter, automatic transmission 725.0) ‑ NAG3 Classic ‑ Hybrid (automatic transmission 725.0) ‑ NAG3 Classic ‑ AMG 63 (automatic transmission 725.0) ‑ NAG3 MOPF ISG2 (automatic transmission 725.1) ‑ NAG3 MOPF Hybrid (automatic transmission 725.1) ‑ NAG3 MOPF AMG sport model (AMG 53/AMG 53e with ISG48V2 & converter /hybrid, automatic transmission 725.1) ‑ NAG3 MOPF AMG 43/63 with engine 139/177 (automatic transmission 725.1) Steps for the Service Advisor: Important: The more information and detail that can be given to the workshop about the complaint, then the more effective the subsequent diagnosis with IPR can be. To this end, a detailed service reception questionnaire has been provided to help the Service Advisor ask the right questions about the complaint. ‑ Ask precise details about the customer complaint and the conditions and context. ‑ Fill out the service reception questionnaire (please see WIS document: OF27.00‑P‑3000‑05A) for customer complaints in detail and forward it to the workshop. Operation steps for the workshop employee: 1. Perform quick test 2. Access the transmission control unit via XENTRY Diagnosis 3. Select "A customer complaint has been received" and carry out all subsequent operation steps (IPR diagnosis path). 4. The IPR repair instructions are displayed, Carry out the IPR repair instructions without performing any further diagnostic or repair steps. ‑ Important: The IPR repair instructions are binding and must be carried out. Differing repairs are possible; such repairs must be documented in XENTRY in free text. Please observe the information regarding the IPR diagnosis process in XENTRY. Conventional diagnosis and subsequent appropriate repairs are only permitted if IPR does not specify any repair instructions. Invoicing for the guided IPR steps: Operation item 27‑0640 and 0.1 hours Notice regarding warranty: The use of IPR in association with warranty claims is mandatory! If the IPR repair instructions are disregarded without justification, the warranty claims may be rejected and/or are subject to debit. IPR will provide a measure to repair the vehicle based on various data sources (EEPROM, fault codes, etc). Please consider the vehicle maintenance record of the vehicle. For warranty and goodwill repairs, the transmission ECU test log and/or IPR test result must be uploaded into Paperless XENTRY Diagnosis (pXD) . If repair is being determined based of oil pan condition pictures of oil pan MUST be provided to warranty as justification. ·Tamper‑proof documentation: The IPR repair instructions are stored in the control unit log. Please file this document in a tamperproof manner ‑ either in digital form or as a hard‑copy printout and also enclose a printout with the damaged part. In this regard, please comply with the country‑specific warranty requirements of the MPC/general distributor.

Complaint Noises in the steering column area when steering. See example file in the attachments area: "MRSM‑Schleifgeräusch_SCCMGrindingNoises. MOV". Cause Under analysis. Remedy Check which area of the steering column the noises occur in. Do the noises tend to occur at the bottom in the driver footwell or do they tend to occur in the area of the steering column switch module (MRSM/SCCM)? If the noises occur in the area of the MRSM/SCCM, work through the following points: ‑ Loosen screws of the MRSM/SCCM and steering wheel, re‑align the MRSM/SCCM, and re‑fasten the screws (see WIS). Sometimes there is stress at the MRSM/SCCM and noises occur. ‑ If noises continue to occur, swap the MRSM/SCCM into a vehicle without any (noise) complaints. ‑ If the noises occur with the MRSM/SCCM complained about when it is in the vehicle without a complaint (donor vehicle), the MRSM/SCCM can be replaced. ‑ If noises also occur in the customer vehicle with the MRSM/SCCM from the reference vehicle, the MRSM/SCCM is not the cause and must not be replaced. Notes: ‑ When installing the MRSM/SCCM, make sure that no damage occurs! ‑ If the noise is due to the steering wheel (see attachment "Lenkrad‑Schleifgeräusch_SteeringWheel‑GrindingNoises.mp4"), please use LI46.10‑P‑077313. ‑ Only disassemble and mount all component parts in the "straight‑ahead position" (see also WIS). ‑ Please refer to this LI in the "Notes" section of the warranty claim!

Complaint Repeat workshop visit for vehicle vibration while braking from 60MPH. NOTE: Although the symptom is similar to a tire or wheel vibration, it is usually readily noticeable that it is distinctly different if it happens at all times or only while braking. Cause Although the cause of the vibration is most likely due to excessive lateral runout on the rotor or hub/wheel bearing, the system as a whole needs to be checked for other possible contributors. 1. Prior collision damage. 2. Excessive vehicle sitting times without rotating components. 3. Wheel bearing/hub lateral runout. 4. Wheel mating interface has been overtightened (did not follow WIS torque procedures). 5. Mating interfaces have been excessively modified (painted, gouged, bent, etc...). Remedy Read through the entire attached worksheet prior to performing. After performing, please review the final page and perform work accordingly. NOTE: This document is not pre‑authorization or otherwise dealing with warranty. This is intended for diagnostic purposes only. If there are any questions on how to proceed OR The work sheet has been performed and the vehicle has returned with the same concern. Please perform the measurements as seen in the worksheet again and open a TIPS case to the Body, Chassis, and Entertainment team.

Complaint Only vehicles with a variable transfer case are affected. This can be identified through control unit N45 or N15/7 in the quick test. When accelerating with light load, vibrations or jolting sensation may come from the drivetrain. It may be mistaken for a harsh shift. Cause Modified oil quality of the transfer case over time Remedy 1. Check initial quick test for faults in the following control units. N45 or N15/7 ‑ All‑wheel drive (ARS) N127 ‑ 'Drivetrain' (PTCU) control unit Y3/8 ‑ Transmission control for 9‑gear transmission (VGS) N3/10 ‑ Engine electronics for combustion engine If faults are present: Process them as per the guided test in Xentry. If no faults are present: 2. Check the transmission oil level If the oil level is correct: 3. Unplug the connector for the transfer cases control unit and reassess the vehicle on a subsequent test drive If the complaint no longer occurs with the control unit disconnected: 4. Perform an oil change of the transfer case according to WIS specifications ‑ Collect an oil sample of the original fluid 5. Complete all transfer case Tech‑in processes located under VG Control Unit > Adaptations ‑ Resetting the oil service data ‑ Calibration of N15/7 5. Perform road test of vehicle to bring transmission to operating temperature (>60C ) 6. Operate vehicle in full circle with steering at full lock ‑ 5x to the left ‑ 5x to the right Return the vehicle to the client and request they drive the vehicle for at least 200 miles and return if the concern is not resolved. The extended drive will ensure the clutches are properly conditioned with the new oil and should resolve the concern. If this LI has already been applied to the vehicle, please submit a TIPS case to the Powertrain inbox with the following information: ‑ Initial quick test with fault freeze frame data ‑ Initial transmission EEPROM data ‑ VGS and Transfer Case Control Unit Log (N45 or N15/7) ‑ Special Acquisition Data .txt file (Transfer Case Control Unit > Special Procedures > Procedures for support queries to market support > Special Data Acquisition) ‑ Photo of the original oil condition ‑ What color was the fluid drained from the transfer case before the oil change? ‑ Was an oil sample collected, and can you provide a photo of the original fluid? ‑ What color and part number fluid was used during the oil change? ‑ How far was the vehicle driven after?

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. Note: Please refer to this document in the warranty claim and, once diagnosis is completed, select the damage code depending on the component part that is causing the issue. • 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!

Complaint Customer complaints relating to automatic transmission 725.0 (NAG3 Classic / 9G‑TRONIC automatic transmission) and 725.1 (NAG3 facelift/9G‑TRONIC automatic transmission facelift) For faster, more effective and more targeted diagnosis, Intelligent Predictive Repair (IPR) has been developed and integrated into XENTRY Diagnosis. This ensures an automated diagnosis process. Cause As part of the on‑going quality monitoring process and associated quality and damaged part appraisals, a high number of ineffective repairs have been discovered. Such ineffective repairs have a negative impact on all those involved. For the customer, it means high costs and long repair times and for the dealer, it may result in the warranty claim being rejected. Remedy General note: IPR is available for: NAG3 Classic (automatic transmission 725.0) NAG3 ‑ AMG sports models (AMG 43 and AMG 53 with converter) NAG3 ‑ AMG 63 NAG3 ‑ Hybrid NAG3 Facelift (automatic transmission 725.1) NAG3 facelift (725.1) with engine 139/177 (AMG 43/63) Steps for the Service Advisor: Important: The more information and detail that can be given to the workshop about the complaint, then the more effective the subsequent diagnosis with IPR can be. To this end, a detailed service reception questionnaire has been provided to help the Service Advisor ask the right questions about the complaint. ·Ask precise details about the customer complaint and the conditions and context. ·Fill out the service reception questionnaire (please see WIS document: OF27. 00‑P‑3000‑05A) for customer complaints in detail and forward it to the workshop. Operation steps for the workshop employee: Perform quick test ·Access the transmission control unit via XENTRY Diagnosis ·Select "A customer complaint has been received" and carry out all subsequent operation steps (IPR diagnosis path). ·The IPR repair instructions are displayed. Carry out the IPR repair instructions without performing any further diagnostic or repair steps. ·Important: The IPR repair instructions are binding and must be carried out. Differing repairs are possible; such repairs must be documented in XENTRY in free text. Please observe the information regarding the IPR diagnosis process in XENTRY. ·Conventional diagnosis and subsequent appropriate repairs are only permitted if IPR does not specify any repair instructions. ·Invoicing for the guided IPR steps: Operation item 27‑0640 and 0.1 hours !!!!! Notice regarding warranty: !!!!! ·The use of IPR in association with warranty claims is mandatory! ·If the IPR repair instructions are disregarded without justification, the warranty claims may be rejected and/or are subject to debit. IPR will provide a measure to repair the vehicle based on various data sources (EEPROM, fault codes, etc). Please consider the vehicle maintenance record of the vehicle. For warranty and goodwill repairs, the transmission ECU test log and/or IPR test result must be uploaded into Paperless XENTRY Diagnosis (pXD) . If repair is being determined based of oil pan condition pictures of oil pan MUST be provided to warranty as justification. ·Tamper‑proof documentation: The IPR repair instructions are stored in the control unit log. Please file this document in a tamperproof manner ‑ either in digital form or as a hard‑copy printout and also enclose a printout with the damaged part. In this regard, please comply with the country‑specific warranty requirements of the MPC/general distributor.