2023 Mercedes-Benz E 450

The contact owns a 2023 Mercedes-Benz E-Class. The contact stated while driving at an undisclosed speed, the engine seized. The contact stated that the failure occurred while making a left turn. In addition, a malfunction error message illuminated. The contact stated while attempting to start the vehicle, the vehicle failed to start with the push to start. However, the vehicle did start using the key fob. The vehicle was taken to the dealer, however the failure was not duplicated. The manufacturer was not made aware of the failure. The failure mileage was approximately 25,000.

NHTSA ID

11741489

Incident

May 20, 2026

Mileage

25,000 mi

The contact owns a 2023 Mercedes-Benz E450. The contact stated that while driving at various speeds with the cruise control activated, a yellow "Active Lane Keeping Assistance is Inoperable" message was displayed, followed by a red "Emergency Braking to Begin" message displayed on the instrument panel. To prevent the failure, the contact immediately deactivated the cruise control. The dealer was notified about the failure on several occasions, and two separate cases were filed with the manufacturer. The dealer replaced the steering wheel, replaced several fuses, and performed several software updates to correct the failure under warranty; however, the failure persisted after each repair. The vehicle was not repaired. The failure mileage was approximately 15,500.

NHTSA ID

11732925

Incident

Sep 1, 2025

Mileage

15,500 mi

RE: Continental Pro Contact GX SSR MOE 245/40 R19 98 H M+S Original factory installed Mercedes E450 tires. I had 3 blowouts from hitting small potholes on 3 different tires in 1.5 years. These are complete immediate blowout going completely flat on impact. It could have very dangerous if I were driving a little faster and fortunately there was no other damage to the car or other persons. In each case, I hit a small pothole, and the tire blew out, flat to the ground. Because these are run flat tires, on the first 2 incidents I was able to drive home and to the dealer for tire repair/replacement. The third one was so bad that I could not drive all the way home and had to get towed. But all 3 incidents were scary and dangerous because of the sudden blowouts. The tires were not repairable and had to be replaced. I believe that the Mercedes Tire inflation instructions is unsafe and they should put more air in the tires to protect from the rim cutting into the tire when hitting a pothole. The driver's door "B" pilar placard says the "cold tire pressure: Front 41 psi Rear 47 psi". Mercedes repair shop inflates the tires according to the Fuel Filler Door decal that says " Front 36 psi, Rear 36 psi." That is a big difference in pressure -- as much as possible 11 psi under pressure. I believe these run flat tires failed because of too low of tire pressure when hitting the pothole. If the tires were inflated with the higher pressures as on the door pilar, the wheel rim would not have been able to cut into and through the tire wall because the higher tire pressure would prevent the impact of the rim cutting through the tire sidewall. I believe this a serious safety issue and Mercedes should be inflating this type run flat MOE tires to a much higher pressure and should not use the low-pressure instructions that are on the fuel door label. There should be a recall and repair instructions to increase run flat tire pressure on Mercedes E class vehicles.

NHTSA ID

11696449

Incident

Aug 14, 2025

RE: Continental Pro Contact GX SSR MOE 245/40 R19 98 H M+S Original factory installed Mercedes E450 tires. I had 3 blowouts from hitting small potholes on 3 different tires in 1.5 years. These are complete immediate blowout going completely flat on impact. It could have very dangerous if I were driving a little faster and fortunately there was no other damage to the car or other persons. In each case, I hit a small pothole, and the tire blew out, flat to the ground. Because these are run flat tires, on the first 2 incidents I was able to drive home and to the dealer for tire repair/replacement. The third one was so bad that I could not drive all the way home and had to get towed. But all 3 incidents were scary and dangerous because of the sudden blowouts. The tires were not repairable and had to be replaced. I believe that the Mercedes Tire inflation instructions is unsafe and they should put more air in the tires to protect from the rim cutting into the tire when hitting a pothole. The driver's door "B" pilar placard says the "cold tire pressure: Front 41 psi Rear 47 psi". Mercedes repair shop inflates the tires according to the Fuel Filler Door decal that says " Front 36 psi, Rear 36 psi." That is a big difference in pressure -- as much as possible 11 psi under pressure. I believe these run flat tires failed because of too low of tire pressure when hitting the pothole. If the tires were inflated with the higher pressures as on the door pilar, the wheel rim would not have been able to cut into and through the tire wall because the higher tire pressure would prevent the impact of the rim cutting through the tire sidewall. I believe this a serious safety issue and Mercedes should be inflating this type run flat MOE tires to a much higher pressure and should not use the low-pressure instructions that are on the fuel door label. There should be a recall and repair instructions to increase run flat tire pressure on Mercedes E class vehicles.

NHTSA ID

11696446

Incident

Apr 2, 2024

RE: Continental Pro Contact GX SSR MOE 245/40 R19 98 H M+S Original factory installed Mercedes E450 tires. I had 3 blowouts from hitting small potholes on 3 different tires in 1.5 years. These are complete immediate blowout going completely flat on impact. It could have very dangerous if I were driving a little faster and fortunately there was no other damage to the car or other persons. In each case, I hit a small pothole, and the tire blew out, flat to the ground. Because these are run flat tires, on the first 2 incidents I was able to drive home and to the dealer for tire repair/replacement. The third one was so bad that I could not drive all the way home and had to get towed. But all 3 incidents were scary and dangerous because of the sudden blowouts. The tires were not repairable and had to be replaced. I believe that the Mercedes Tire inflation instructions is unsafe and they should put more air in the tires to protect from the rim cutting into the tire when hitting a pothole. The driver's door "B" pilar placard says the "cold tire pressure: Front 41 psi Rear 47 psi". Mercedes repair shop inflates the tires according to the Fuel Filler Door decal that says " Front 36 psi, Rear 36 psi." That is a big difference in pressure -- as much as possible 11 psi under pressure. I believe these run flat tires failed because of too low of tire pressure when hitting the pothole. If the tires were inflated with the higher pressures as on the door pilar, the wheel rim would not have been able to cut into and through the tire wall because the higher tire pressure would prevent the impact of the rim cutting through the tire sidewall. I believe this a serious safety issue and Mercedes should be inflating this type run flat MOE tires to a much higher pressure and should not use the low-pressure instructions that are on the fuel door label. There should be a recall and repair instructions to increase run flat tire pressure on Mercedes E class vehicles.

NHTSA ID

11696441

Incident

Feb 25, 2024

The contact owns a 2023 Mercedes-Benz E450 Convertible equipped with Continental Tires, Tire Line: ProContact GX SSR, Tire Size: 245/40/R19, DOT Number: 16YOF989F4623. The contact stated that while driving at an undisclosed speed over a bumpy road surface, the front driver's side tire experienced a blowout several times, requiring the vehicle to be towed to the dealer, where the front driver's side tire was replaced four times by the dealer. Additionally, the contact stated that the failure recurred while driving, and a tire was replaced. The vehicle manufacturer was notified of the failure, but no assistance was provided. The tire manufacturer was not notified of the failure. The vehicle failure mileage was approximately 50. The tire failure mileage was approximately 50. The VIN was not available.

NHTSA ID

11667542

Incident

Jun 17, 2025

Mileage

50 mi

I am submitting this complaint regarding serious and repeated electronic failures in my 2023 Mercedes-Benz E 450 that pose a significant safety risk to myself and other drivers on the road. The vehicle has experienced complete dashboard failures on multiple occasions, including the loss of speedometer, fuel gauge, and gear shift indicators. Most critically, the vehicle recently shut down while in motion, displaying a “malfunction” warning and disabling the electronic steering system. I was unable to maneuver the vehicle off the road, creating an extremely dangerous situation. This vehicle has been brought to the dealership three or more times for the same issue, with no permanent resolution. I believe this constitutes a serious safety defect. I respectfully request that the NHTSA investigate this matter as a potential recall issue.

NHTSA ID

11662824

Incident

Nov 7, 2024

My vehicle is equipped with a camera system which, when in reverse gear, displays objects/people behind the vehicle and, when going forward to park, displays objects/vehicles ahead. For the first 11 months of ownership, the system has worked properly. For the last 6 months the system has worked intermittently. The vehicle, purchased new, is under warranty and has been returned to the dealership 4 times for software updates and and part replacements. Two weeks after the last visit, the camera system was inoperative again. Shortly after I returned home and went out again the camera system worked properly. Several years ago, Mercedes recalled 347,000 vehicles for a similar problem. My vehicle was purchased after the recall and did not fall into the category of vehicles that were recalled but it seems that, with the Mercedes brand, the problem still persists. To the extent the camera system will alert you to the presence of a person when backing up, this is a safety issue which needs to be addressed. Thank you

NHTSA ID

11640561

Incident

Feb 3, 2025

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.

Complaint Slight creaking noises when steering. Cause Noises may come from one or more sleeves of the horn contact plate. Remedy Remove the horn contact plate and check the sleeves for noise; see attached video. If necessary, apply lubricant to the sleeves.

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 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 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. 1‑Modify engine insulation per attached instructions. 2‑Remove engine control module and measure continuity within control unit between connector 2 pin 1 and connector 6 pin 2. 2a‑If open circuit is found, replace engine control unit (MRG1) and perform initial startup. Refer to XENTRY parts information group 54/054 item 300. 3‑Clear faults and verify M75/11 operating normally.

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!