There are no safety recalls for the 2012 Mercedes-Benz S350, but owners have filed 7 complaints with NHTSA.
2012 Mercedes-Benz S350 problems reported by owners
| Problem area | Reports | |
|---|
| Engine | 3 | |
| Vehicle Speed Control | 2 | |
| Power Train | 2 | |
| Fuel/Propulsion System | 2 | |
| Unknown or Other | 1 | |
Typical mileage at the time of the problem: 54,500 miles (median of owner reports).
Problems that are not covered by a recall are paid repairs; labor rates follow local mechanic pay — see what auto mechanics earn in each state.
Recent 2012 Mercedes-Benz S350 complaints
Owner reports filed with NHTSA, as written (personal details removed). Complaints are not verified by NHTSA.
Engine · at 54,500 miles · reported Nov 28, 2016
I did some research on mercedes 3.0l diesel motors and there seems to be an issue with the seal failing about 50,000 miles causing the motor to leak oil and the seal as well as the oil cooler need to be replaced. It is such a common problem on the 3.0l diesel engines that when you call any repair shop the first thing they ask is if the car is a diesel. Also the seal replacement is all over the mercedes blogs saying the same issue on the 3.0l diesels. Thought it might be something to look into as it is an engine seal problem and is occurring consistently in all the 3.0l diesels in the s class…
Fuel/Propulsion System · at 57,000 miles · reported Nov 16, 2016
"takata recall" the vehicle slips into a limp mode while driving. This have happened several times. I'm taking it to the mb dealer this weekend. 11/16/2016. 57kmiles
Fuel/Propulsion System · at 61,750 miles · reported Aug 30, 2016
Vehicle entered limp home mode while entering intersection. Dealership said codes did not indicate an issue and could not reproduce problem. Only actions taken was a computer test and road test. After leaving the dealer, the vehicle entered the limp home mode again this time on the highway. Dealer then replaced two sensors at the turbo. After returning the vehicle to me, it entered the limp home mode again, also while driving on the highway. This time, dealer replaced the turbo when it was brought back in for repair. The vehicle still entered the limp home mode after this repair. So the dealer…
Power Train · at 52,000 miles · reported Mar 30, 2016
While driving at freeway speeds car went into limp mode. Engine rmp were limited to 1500rpm and speed dropped to 25mph.this happened 3 times during week of 3/14/16 and again on 3/22/16. Had to make defensive emergency maneuver to steer the car away from the traffic lanes and stop on the side of the freeway. Was almost rear ended by a semi. Car had to be turned off and restarted to come back to normal driving mode. Car was taken to mercedes dealer and it was diagnosed to be a bad torque converter causing this limp mode. Dealer repaired the car by replacing the torque converter. There was no…
Vehicle Speed Control · at 50,000 miles · reported Apr 21, 2015
The contact owns a 2012 mercedes benz s350. While driving approximately 65 MPH, the vehicle decelerated without warning. The contact then coasted over to the emergency lane and there were no warning lights illuminated. The vehicle restarted; however, the failure recurred multiple times. The vehicle was taken to the dealer for diagnostic testing. The technician diagnosed that the side charge air hose into the throttle actuator was torn and caused the loss of hose pressure. Both the left and right hose needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the…
Frequently asked questions
Does the 2012 Mercedes-Benz S350 have any recalls?
No. NHTSA has no safety recalls for the 2012 Mercedes-Benz S350 as of this update. Check your VIN at nhtsa.gov/recalls for the latest status.
What is the most common problem with the 2012 Mercedes-Benz S350?
Owners report engine problems most often (3 reports), followed by vehicle speed control (2). The typical mileage when problems were reported is about 54,500 miles.
Are Mercedes-Benz recall repairs free?
Yes. Safety recall repairs are free at authorized Mercedes-Benz dealers, whether you are the first owner or bought the car used.