2012 Mercedes-Benz E350 Electrical system Problems
- Complaints
- 19about this part
- Share
- 9%of 217 total for the year
- Median mileage
- 70,000miles
- Trend
- FallingComplaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.
NHTSA recorded 19 complaints about the electrical system of the 2012 Mercedes-Benz E350, 9% of the 217 complaints for this model year. Where a mileage was given, the median is 70,000 miles. 1 recall campaign on record is filed under a similar system.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“I started my car and it made a big loud noise from engine then I start getting all messages on screen that every things not inoperable. Even the gear shift was locked and the more I kept the car on the more noise was making. Its like I am pushing hard on gas panel.”
NHTSA complaint #10676749, filed 2015-01, 30,000 miles“I attempted to start the car and it would not crank. I called mercedes service and they sent service to jumpstart the car. The car finally started. As I began to drive, a warning light stating power steering malfunction - check owners manual came on. With considerable difficult, I avoided the curb in the parking lot and managed to get the car to a parking space. The power steering malfunction indicator would not come off even after turning the car off and on again. The car became undrivable.”
NHTSA complaint #10458487, filed 2012-05, 550 miles“My 2012 mercedes E350 has oil contamination of the wiring harness. The oil has also damaged other components in the engine compartment including oxygen sensors; probes and ecu(computer) this is very expensive damage. Mercedes-benz had had recall for this problem in the past but the recall did not extend to the 2012 model year. They need to do another recall for this ongoing problem. This is a major safety hazard, as the car could stall in traffic without warning”
NHTSA complaint #11413931, filed 2021-04, 101,000 miles“The vehicle was parked when the steering wheel locked , and the headrest. The electrical for my headlight driver side low beam gave me a warning lamp message.”
NHTSA complaint #11764591, filed 2026-09“Camshaft sensors and solenoid leak oil internally which then gets into the sensors electrical connector. From the the oil enters the engine wire harness through capillary action maki g it’s way to other sensors and ultimately the DME (Digital Motor Electronics). This can cause February DME to fail which in turn can make the engine stop running.”
NHTSA complaint #11487171, filed 2022-09Related recalls
- 17V177000Mar 14, 2017Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2016 AMG GT-S, GLC300, CLA250 and GLE300d 4Matic vehicles, 2013 C250, E350 BlueTec and G63 AMG vehicles…Covers: Mercedes-Benz E350 2012–2016, C300 2008–2016, ML350 2012–2014 +13 more
Related service bulletins
- 11036190Aug 6, 2026Complaint A popup is seen on the HU with the message "data connection temporarily not available". Potentially affected functionalities in NTG4.5, NTG5 1.Weather 2.Local Search…
- 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…
- 11026835Dec 18, 2025Complaint The flap of the reversing camera opens and closes by itself during forward travel several times during the trip. No camera image is displayed in the head unit. The…
- 11022385Aug 28, 2025Complaint Message in Instrument Cluster for "Active Distance Assist not enabled, but can be purchased subsequently" even if Digital Extra: Active Distance Assist DISTRONIC (207)…
- 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…
- 11017119Apr 21, 2025Complaint A popup is seen on the HU with the message "data connection temporarily not available". Potentially affected functionalities in NTG4.5, NTG5 1.Weather 2.Local Search…
- 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…
- 11014608Feb 24, 2025Complaint The flap of the reversing camera opens and closes by itself during forward travel several times during the trip. No camera image is displayed in the head unit. The…
- 11014576Feb 24, 2025Complaint The flap of the reversing camera opens and closes by itself during forward travel several times during the trip. No camera image is displayed in the head unit. The…
Electrical system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2024 | 2 | 40% |
| 2023 | 1 | 17% |
| 2022 | 1 | 11% |
| 2021 | 4 | 31% |
| 2020 | 2 | 25% |
| 2017 | 1 | 14% |
| 2016 | 9 | 18% |
| 2015 | 5 | 16% |
| 2014 | 38 | 14% |
| 2013 | 12 | 7% |
| 2012 | 19 | 9% |
| 2011 | 4 | 2% |
| 2010 | 17 | 9% |
| 2009 | 3 | 5% |
| 2008 | 18 | 10% |
| 2007 | 17 | 5% |
| 2006 | 19 | 5% |
| 2005 | 2 | 13% |
| 2004 | 1 | 10% |
| 2003 | 2 | 29% |
Other parts of the 2012 Mercedes-Benz E350
84 complaintsFuel system
35 complaintsBrakes
20 complaintsEngine
20 complaintsOther or unknown
17 complaintsSuspension
14 complaintsTransmission and drivetrain
10 complaintsSteering
9 complaintsSeats
8 complaintsBody and structure
8 complaintsSeat belts
4 complaintsTires
4 complaints
← All problems reported for the 2012 Mercedes-Benz E350
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 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