2003 Mercedes-Benz ML320 Electrical system Problems
- Complaints
- 2about this part
- Share
- 9%of 22 total for the year
- Median mileage
- 100,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the electrical system of the 2003 Mercedes-Benz ML320, 9% of the 22 complaints for this model year. Where a mileage was given, the median is 100,000 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.
“While driving, went over bump in road, and truck immediately lost speed. Pressure on gas pedal weakend. There was absolutely no acceleration. I pulled over after almost being hit, and turned vehicle off. Restarted and pull over into autozone to have them hook it up to diagnostic reader. It came back with several codes, that all stated throttle pedal positioner malfunction I have bought and replaced this item 4 times since this incident, and the problem still exists. …”
NHTSA complaint #10594921, filed 2014-05, 100,000 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…
- 10167564Jul 12, 2013Customer experiences low battery conditions, resulting in jump starts, and eventually requiring battery replacement.
- 10167563Jul 8, 2013The COMAND unit does not start or the COMAND display remains dark. The COMAND unit cannot be operated. Note: The problem disappears after a lengthy idle period (>6h) or after…
- 10034152Jun 7, 2010Mercedes: battery symbol and service required (in white). Fault message is displayed if the charge level is too low or the park pawl additional battery is defective. In addition…
- 10033070Dec 16, 2009Xentry (mercedes): engine warning lamp is currently on or was on and a delay fault of the camshaft adjust to current or stored in the engine control unit. Models 171, 203, 209…
- 10028686May 6, 2009Mercedes: air matic visit workshop displayed within instrument cluster. Models 164, 211, 219, 221 and 251. Included 4matic, amg (compressor) amg, bluetec and wagon. Model years…
Electrical system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2009 | 3 | 11% |
| 2008 | 4 | 19% |
| 2007 | 2 | 13% |
| 2003 | 2 | 9% |
| 2002 | 19 | 22% |
| 2001 | 16 | 12% |
| 2000 | 20 | 12% |
| 1999 | 3 | 2% |
| 1998 | 21 | 16% |
Other parts of the 2003 Mercedes-Benz ML320
6 complaintsSteering
6 complaintsBrakes
4 complaintsVehicle speed control
4 complaintsElectronic stability control
2 complaintsFuel system
2 complaintsTransmission and drivetrain
2 complaintsAir bags
1 complaintsSuspension
1 complaints
← All problems reported for the 2003 Mercedes-Benz ML320
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