2012 Mercedes-Benz SLK350 Electrical system Problems
- Complaints
- 1about this part
- Share
- 8%of 12 total for the year
- Median mileage
- 13,255miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the electrical system of the 2012 Mercedes-Benz SLK350, 8% of the 12 complaints for this model year. Where a mileage was given, the median is 13,255 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Electric steering wheel locks, when you go back to the car all the electrical system is not working the car is dead as dead, if you happen to be in a bad neighborhood your life is in danger, the car must be towed to the mercedes dealer, practically what happen to so many car owner I know is that eis / esl the eis module where you insert key to start and the esl steering lock assembly locate at the bottom of the column that fails. The cost of repair ($1700.) as nothing to do with the risk you take to be stranded anywhere with no prior diagnostic flag. …”
NHTSA complaint #10860868, filed 2016-04, 13,255 milesRelated service bulletins
- 11033185May 26, 2026Complaint After successful commissioning of the HERMES control unit (N112/9) with XENTRY Diagnosis DVD 03/2026, the message "SOS - service not activated" appears on the…
- 11033016May 26, 2026Complaint The customer requests deactivation of the N112/9 HERMES communication module Note: Deactivation of the HERMES control unit (N112/9) is not supported for gray-market…
- 11020872Jul 16, 2025Complaint Commissioning not possible after replacement of TRANSMISSION 722.9 or of electrohydraulic controller unit (EHS) or of repair kit controller unit (VGS). Cause The wrong…
- 11018626May 22, 2025Complaint After a software update of HERMES communication module N112/9 has been performed on a gray import vehicle, the message "SOS - Service not activated" is displayed in the…
- 11015640Mar 5, 2025Complaint During a phone call, the called party has difficulty understanding/cannot understand the driver, or interference/background noises are audible to the called party…
- 11010755Nov 20, 2024Complaint After a control unit replacement of "N112/9 - control unit for telematics services (HERMES)" or the "N112/2 - control unit for telematics services (RAMSES)", the…
- 11008880Oct 3, 2024Complaint After a control unit replacement of "N112/9 - control unit for telematics services (HERMES)" or the "N112/2 - control unit for telematics services (RAMSES)", the…
- 11008091Sep 28, 2024Complaint During a phone call, the called party has difficulty understanding/cannot understand the driver, or interference/background noises are audible to the called party…
- 10241790Aug 18, 2023The Mercedes me connect services cannot be activated. The remote status data does not update. Error in N112/9 - control unit for telematics services (HERMES). In the HERMES…
- 10160738Apr 11, 2019Update engine electronics (ME-SFI) control unit software
Electrical system: other model years
Other parts of the 2012 Mercedes-Benz SLK350
3 complaintsOther or unknown
3 complaintsAir bags
1 complaintsEngine
1 complaintsSeats
1 complaintsSteering
1 complaintsBody and structure
1 complaintsSuspension
1 complaintsTransmission and drivetrain
1 complaintsWheels
1 complaints
← All problems reported for the 2012 Mercedes-Benz SLK350
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology