2007 Mercedes-Benz ML350 Electrical system Problems
- Complaints
- 19about this part
- Share
- 23%of 83 total for the year
- Median mileage
- 80,000miles
- 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 2007 Mercedes-Benz ML350, 23% of the 83 complaints for this model year. Where a mileage was given, the median is 80,000 miles. 7 a fire, according to the filers.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Today, and while driving on a freeway, my car and I almost burned when I turned on the driver seat heater. I started feeling an excessive heat on the left back side. I stoped on the right of the freeway to discover that the seat leather was burned with heating wire, with smoke coming out from the seat. My shirt was damaged with the burn. Searching the web, I found many people complaining about the same issue.”
NHTSA complaint #11281676, filed 2019-11, 5 miles“While driving my turn signals, brake lights, windshield wipers, seat controls, and I'm not sure what else became inoperable. Also the srs warning displayed meaning the airbags were malfunctioning. Seems that the sam module is the culprit but nothing should be able to stop such vital safety issues from happening all at once. I have seen several articles about this happening and a recall is needed in my opinion.”
NHTSA complaint #11163862, filed 2018-12, 40,000 miles“I backed car out of garage and all instruments on panel started turning in opposite directions. My lights blink off and on ,my clock rewinds , ,my radio light get bright then turns dark. This car is garage kept so why is electrical system bad .these things happen when it is stationary and in motion also power steering leak”
NHTSA complaint #10808970, filed 2015-12, 80,000 miles“While driving down the highway I smelled what smelled like wires burning then my windshield wipers turned on by itself and wiped at a very fast pace, then the horn started blowing (on its own) very loudly, I pulled over at a tire shop and I noticed smoke coming from the rear passenger door panel. The fire department was called and they disconnected the battery. When I spoke to a mechanic I was told that there was a recall on the wiring harness and that was more than likely the problem.”
NHTSA complaint #11331697, filed 2020-06, 80,105 miles“Engine light came on . Take to repair shop,crank sensor bad,changed crank sensor, light came on back,o2 sensor bad, changed o2 sensor,light came back on,finally said worn sprackett in engine sending false reading. Steering pump went bad at 59000. Ac pump pulley broke off at 54,000 miles. Ac/heat comes on by itself, even when vehicle is turn off.”
NHTSA complaint #10433837, filed 2011-11, 54,000 milesRelated service bulletins
- 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…
- 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…
- 10166088Jul 12, 2014Noises from the mounting of the rear weight sensing system (WSS) sensors
- 10165842Jul 10, 2014With an unfavorable sensor position and high rpms, the sensor may deliver incorrect rpm values and the transmission control unit may detect overspeeding. Owing to the software…
- 10165852Jul 9, 2014Noise in center console area of W166.
- 10165851Jul 8, 2014Side windows may make noises when closing and opening, or reverse direction when closing.
- 10165850Jul 8, 2014Side windows may make noises when closing and opening, or reverse direction when closing.
- 10167007Feb 25, 2014Engine diagnosis warning lamp active. Fault code 20BE1B and/or 20BD1B (The heating element of the AdBlue tank has a malfunction) is logged in the Blue-Tec control unit.
- 10167006Feb 12, 2014Engine diagnosis warning lamp active. Fault code 20BE1B and/or 20BD1B (The heating element of the AdBlue tank has a malfunction) is logged in the Blue-Tec control unit.
- 10205233Aug 5, 2013Mobile phone cotacts are not transferred completely.
Electrical system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2015 | 4 | 8% |
| 2014 | 20 | 29% |
| 2013 | 11 | 19% |
| 2012 | 11 | 17% |
| 2011 | 16 | 14% |
| 2010 | 10 | 10% |
| 2009 | 17 | 18% |
| 2008 | 13 | 19% |
| 2007 | 19 | 23% |
| 2006 | 29 | 17% |
| 2004 | 4 | 11% |
| 2003 | 4 | 16% |
Other parts of the 2007 Mercedes-Benz ML350
30 complaintsTransmission and drivetrain
17 complaintsSteering
8 complaintsEngine cooling
7 complaintsBody and structure
6 complaintsBrakes
5 complaintsEngine
5 complaintsExterior lighting
3 complaintsVehicle speed control
3 complaintsAir bags
2 complaintsEquipment
2 complaintsFuel system
2 complaints
← All problems reported for the 2007 Mercedes-Benz ML350
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