2010 Mercedes-Benz S400 problems

Filed Aug 30, 2022 · Acceleration, Steering · TX

Airmatic Suspension sprung a leak and could not be driven safely due to the vehicle getting severely low where the tire and rim tucked into the wheel well. When the airmatic suspension fails the vehicle can get so low that it can scrape the roadway, hit bumps and damage parts under which can dislodge and cause an severe accident or pile up. Requesting a Nationwide Recall on all Mercedes-Benz vehicles equipped with Airmatic Suspension.

Filed Jan 3, 2021 · Electrical, Engine · 115,000 miles · IL

Power electronic control unit malfunction. Car will not crank/ no start. Car was stationary-parked.

Filed Nov 18, 2020 · Electrical · 100,009 miles · TX

The computer control unit for the hybrid motor has failed on my and many s400s. This causes car to stall out at stoplights or while driving. This is a safety issue.

Filed Oct 5, 2020 · Fuel system · 87,000 miles · CA

Strong gas orders from interior after fill up. Stationary, in motion, stopped. To the point of nausea and light headedness. 2011 is on recall list for gas pump and sender replacement, plus warranty extension to 15 years for this problem. This needs to also include the 2010 s400 hybrids vehicle has only 87,000 miles on it, and cannot be driven due to possible fuel ingition and the possibility of a catastrophic fire. Please respond with the utmost of haste, lives are at stake. Death by fire is horrific.

Filed Sep 2, 2020 · Electrical · 109,000 miles · CA

The car first started to stop intermittently without any warning at all at the traffic intersection, then I was able to start it again after shutting every thing down. Then a month later, the same thing happened again but this time I was not able to start the car again. This could be a very dangerous safety situation if the engine shuts down while I was driving on the freeway. Mercedes only provided temporary solution by replacing the car hybrid inverter power electronic control unit through a campaign bulletin 2012080004. This bulletin applies to mercedes s400, 2010-2012 year model. However, the main problem still remains and poses a very serious safety issue for all the driver and passengers. This is not an isolate problem. Its a very known problem for lots of owners for those model years. My contact email address is "[xxx]" should you need to contact me. Please see the attachment for the inverter. Information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6). *cc

Filed Feb 4, 2020 · Electrical · DE

First there was no power to the car so we replaced the battery. Then the car was running and shut off one day and would not restart. The vehicle was stationary when it would not restart. We had it towed to mercedes dealer. They are stating it the power electronics module. There are two recalls related to this part but when checking the VIN ours is not part of them. That is impossible. The mercedes dealer even stated there were issues with this part that's why mercedes only made these cars for two years. Please see campaign no. 2012080004.

Filed Dec 6, 2019 · Transmission · 70,000 miles · NC

When coming to a complete stop, the hybrid system shuts down the engine and fails to restart. This places the driver, passenger and others at risk of collision as vehicle will remain stopped in traffic. This issue has been known to mercedes-benz as if is a failure of the power electronics module. It has been subject to two service campaigns: 2012880004 november 2012 2015030006 june 2015 however it appears that the defective part is replaced with a similarly defective part. Furthermore mercedes-benz no longer makes this part available for this model which was produced through 2013. This defective part this model at high risk for the safety of its owners, passengers and occupants of other vehicles as the vehicle is stopped in the road. This is a known issue with this vehicle and has been experienced by many. Of note there were few of this vehicle made (s400 is an early hybrid model made by mercedes-benz) such that a low number of reports represents a high percentage of this model. The frequency if events can be seen in a search of s400 power electronics module problems I have contacted mbusa who states this is not a safety issue and they have no responsibility for the defective part. They have also stated that they have no legal responsibility to continue to produce parts for a model that ended 6 years ago.

Filed Dec 3, 2019 · Electrical · 47,426 miles · WA

2010 s400 hybrid wont start first instance was less than 24 hour of purchasing car from local dealer. Lights all on but no crank. Started after and two weeks later it had to be towed because it completely wont start. Mbusa forum chat and several social media groups all around the world has the same problem with this model and it comes down to an electronics power module that cost more than what the car is worth to repair. Please advise!

Filed Jan 8, 2019 · Electrical · 37,000 miles · NY

I have a 2010 mercedes s400 that was purchased new in nyc and I was promised a 10yr/150k mile warranty because of a carb adoption ny and 10 other states were involved in. My vehicle has only 37k miles and is never been crashed or painted. I went to mercedes of manhattan located on 770 11th ave nyc, ny 10019. My vehicle was denied this warranty coverage the service manager stated because it's at his discretion to grant this or not. I then pleaded with him and he began to insult me saying my vehicle is far from perfect and he can't grant an assistance. I made him aware of my warranty information I had and he said there is no need because he sees everything I have on his computer and mercedes'benz doesn't make mistakes. I then asked for a specific reason why I'm being denied and he then told me my vehicle wasn't up to date on maintenance. I showed him the service records that showed the vehicle was up to date with maintenance and his dealer even reported it on carfax. He then said he will call me back and then reached the conclusion that the 3 scratches on my rear bumper was reason enough to deny me warranty coverage and sent me a statement showing if any part was damaged due to misuse or damage then warranty is voided. I then explained to him my scratches on the bumper wouldn't have any affect or influence on my vehicles hybrid battery. He said he has the technical knowledge and he can deny me for that. I need help plz. I have been told by the mercedes parts department that the hybrid battery and install could range in price of $32,000.00. My question is why did mercedes give customers a 10yr/150k mile warranty on a vehicle that they are going to not accept. My vehicle is 8 years old but was originally purchased for $100,000.00. I feel this is unfair and think I need the assistance of your department please.

Filed Jul 29, 2016 · Electrical, Engine · 61,000 miles · TX

The s400 hybrid has a habit of stalling when in a stop position. This requires a complete re-start at a stop light or after having come to a complete stop. In addition the air conditioning shuts off and does not come back on until you stop for a few minutes and re-start the vehicle. The car stalling is very un-safe. The car stalls at a stop position.