2008 Mercedes-Benz CLS550 Electrical system Problems
- Complaints
- 3about this part
- Share
- 18%of 17 total for the year
- Median mileage
- 95,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 3 complaints about the electrical system of the 2008 Mercedes-Benz CLS550, 18% of the 17 complaints for this model year. Where a mileage was given, the median is 95,000 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.
“My airbags deployed after on day of driving home from a day babysitting my niece and nephew I got home parked my car in the garage and that whole night from 11 at night untill about 330 in the morning the loudest sound I've ever herd the equivalent of a bomb detonation explosion went off and im 10 15 feet away painting my garage and next thing I know I look at my Mercedes-Benz CLS550 2008. All the airbags in the roof and by the back window detonating! I cant understand why to this day the car was locked keys where in my room in the house. And I have no idea how this could of happened. ! …”
NHTSA complaint #11343649, filed 2020-08, 95,000 miles“I see there was a recall on instrument clusters on my vehicle in 2001. My instrument cluster is completely black and I can’t see speed or any thing at night. You cant replace the bulb or cluster unless mercedes reprogram it which the price is rediculous. I did some research and seen that Mercedes did some recalls for my vehicle but it doesn’t show up. I was told to contact you guys in regards to this.”
NHTSA complaint #11547230, filed 2023-09“My doors will open without the keyfob being in close proximity to the vehicle. My car has been stolen d/t this feature. Also the electrical lighting system malfunctions causing dimmer lights especially when driving at night”
NHTSA complaint #11465666, filed 2022-05Related 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…
- 10186141Dec 10, 2020NTG5.5: Incorrect time shown on instrument cluster, COMAND display, and analog clock
- 10155126Jan 30, 2019Model series 257: In the Edition 1, the Welcome graphic is not displayed in the instrument cluster with the specific Edition animation.
- 10151926Jul 3, 2018Warnings without obvious cause from front parking sensors in vehicles with AMG Styling Package (SA code 772)
- 10167510Feb 28, 2014The vehicle cannot be started The vehicle may start by itself shortly after the startup attempt with a delay, as the relay can be late closing. and/or The gear selection is…
- 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.
- 10167564Jul 12, 2013Customer experiences low battery conditions, resulting in jump starts, and eventually requiring battery replacement.
Electrical system: other model years
Other parts of the 2008 Mercedes-Benz CLS550
5 complaintsAir bags
3 complaintsEngine
2 complaintsSuspension
2 complaintsBrakes
1 complaintsElectronic stability control
1 complaintsExterior lighting
1 complaintsOther or unknown
1 complaintsSteering
1 complaintsTires
1 complaintsTransmission and drivetrain
1 complaints
← All problems reported for the 2008 Mercedes-Benz CLS550
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