2007 Mercedes-Benz CLS550 Engine cooling Problems
- Complaints
- 2about this part
- Share
- 6%of 35 total for the year
- Median mileage
- 23,500miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the engine cooling of the 2007 Mercedes-Benz CLS550, 6% of the 35 complaints for this model year. Where a mileage was given, the median is 23,500 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.
“Bought this certified CLS550 from keyes european mercedes in van nuys,ca on 11/23/2009 with 42000 miles as soon as I got the car home I noticed the fan was overly loud and my temperature gauge was reading 110. Called dealership they said fan motor on these cars are all extremely loud and temp. Sounded okay. Two weeks later I was driving when I was alerted to turn off engine immediately due to car seriously overheating. Dealer said it was the thermostat bad on car. Also been having trouble with the transmission since I bought car. Keep in mind I have only had it for about 47 days now. …”
NHTSA complaint #10299073, filed 2010-01, 42,000 miles“Catastrophic failure with sudden loss of power and inability to proceed at more than 20 MPH. It has now recurred twice and vehicle flatbedded to agency. Has been in shop for six days with no repair. Service manager denies that this is the second failure because his diagnostics were unable to determine the problem the first time.”
NHTSA complaint #10246439, filed 2008-10, 5,000 milesRelated service bulletins
- 10205147Nov 14, 2016Ticking or pulsing noise from high-pressure pump and/or fuel injectors.
- 10135950Mar 26, 2013Engine makes intermittent knocking noise, ticking/crackling
- 10028026Aug 1, 2008Mercedes: replace v belt upper guide pulley. The v belt upper guide pulley optimized for noise reduction is available. The dealer will replace upper guide pulley at the next…
- 10022893Apr 24, 2008Check engine light on / fault codes fc1200 / fc1208 stored in me-sfi control unit. Mercedes-benz model c230, c280, c350, slk280, slk350, clk350, clk550, e350, e550, cls550, s600…
- 10022553Jun 1, 2007Install support for intake manifold switchover flap (m156 engine).
- 10021381Feb 1, 2007Check transmission control module software and update if necessary (722.9 transmission); update engine control module software as required (m273 engine).
Engine cooling: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2007 | 2 | 6% |
Other parts of the 2007 Mercedes-Benz CLS550
24 complaintsTransmission and drivetrain
4 complaintsElectrical system
2 complaintsOther or unknown
2 complaintsSuspension
2 complaintsAir bags
1 complaintsElectronic stability control
1 complaintsEngine
1 complaintsSteering
1 complaintsTires
1 complaintsVehicle speed control
1 complaintsVisibility (wipers, defrost, mirrors)
1 complaints
← All problems reported for the 2007 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