There are 2 owner-reported speed control & cruise complaints for the 2012 Mercedes-Benz S-Classin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
"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
TL* 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 FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 50,000.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 25, 2026