Vehicles Affected: Approximately 3,000 model-year 2014 Mercedes-Benz S63 AMG sedans and model-year 2015-16 S63 AMG 4Matic sedans and coupes, all manufactured between May 14, 2013, and Sept. 18, 2015
The Problem: Due to a software error in the engine control unit, the vehicle may stall when coasting to a stop. The stall may be interpreted by the driver as a planned shutdown as part of the stop-start function, but the engine will not restart automatically after the driver releases the brake pedal, immobilizing the vehicle and increasing the risk of a crash.
The Fix: Dealers will update the engine control unit software for free.
What Owners Should Do: Mercedes will begin notifying owners on Dec. 8. Owners can call the automaker at 800-367-6372, the National Highway Traffic Safety Administration’s vehicle-safety hotline at 888-327-4236 or go to www.safercar.gov for more info.
Need to Find a Dealer for Service? Go to Cars.com Service & Repair to find your local dealer.
Former Assistant Managing Editor-News Matt Schmitz is a veteran Chicago journalist indulging his curiosity for all things auto while helping to inform car shoppers.