-Combustion engine sporadically fails to start. -Combustion engine can no longer be started. -Start/Stop function is sporadically unavailable (READY displayed in yellow in instrument cluster). -Start/Stop function fails to function properly in dangerous road conditions - e.g., when pulling into an intersection, in stop & go traffic, when proceeding at a stop light, etc. -This is the second time this major incident has occurred; this was repaired in December 2020 under manufacturer warranty. The Power Electronics (Electric Motor) Control Unit was replaced. It is clear this is a recurring failure affecting this vehicle. ***Campaign No. 2012080004, November 2012 addresses this exact issue - for this exact car (i.e., Mercedes-Benz S 400 (221.195) V6-3.5L (272.974) Hybrid. However, that Recall Campaign is covers Model Years 2010-2012, but fails to cover MY 2013, which is exactly the same as the covered vehicles. This Campaign instructs to Check/Replace the Power Electronics Module, which is the part that my local Mercedes-Benz dealership has advised has failed and needs to be replaced.
2013 Mercedes-Benz S400
Routine
Owners filed 1 complaints about this vehicle with federal regulators, most often about the electrical system. No safety recall has been issued.
What fails
| Component | Reports | Crashes | Fires | Injuries | |
|---|---|---|---|---|---|
| Electrical System | 1 | 0 | 0 | 0 |
What owners reported
Newest filingsElectrical System
Filed May 7, 2025CA
1 of 1 complaints, reproduced as filed.
Reading this record
No unusual pattern of severe incidents in the complaint record.
Complaint counts track how many cars were sold and how long they have been on the road as much as they track quality. A common model from 2013 has had a decade to accumulate reports; a rare one from last year has not. The signal worth weighing is in the severity columns, in whether the same component keeps appearing, and in whether the manufacturer eventually opened a recall for it.
Most recent recall on file: none. Source: NHTSA Office of Defects Investigation.