Mercedes-Benz SL550 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your Mercedes-Benz SL550

Mercedes-Benz SL550 Problems

The active body control system can leak fluid from numerous areas, including the tandem pump, hydraulic lines, struts, and/or seals. If it is not repaired, the vehicle ride height could drop too low and cause damage to the undercarriage.

Leaks in the pneumatic system will cause problems with the dynamic seats and the trunk and/or door closing assist.

The camshaft adjuster solenoid (which is related to the variable valve timing system) may fail or timing chain/balance shaft components may wear, resulting in illumination of the Check Engine Light and various drivability issues. Mercedes-Benz has released a service bulletin outlining specific repair instructions depending on fault codes stored.

See more problems 13

Mercedes-Benz SL550 Questions

We have a 2008 SL550 with less than 19,000 miles and the convertible top stop working. The service dept found that the brackets were bad. The mechanic stated they have replaced them on several other cars.

When the defrost button is on the air comes out at the windshield like it should. What could be the problem?

See more questions 22

Mercedes-Benz SL550 Recalls

These vehicles are equipped with a new type of A/C refrigerant - R1234yf. Testing has determined that escaping R1234yf refrigerant may ignite under specific conditions. A severe frontal crash may rupture one of the air conditioner refrigerant lines, which can result in a gaseous mixture of refrigerant being released into the engine compartment. The resulting fire could spread to additional combustible materials. Dealers will replace the R1234yf refrigerant with R134a (which is the type that had been used previously) along with new refrigerant lines (hoses) designed specifically for R134a.

Transistors used in the front signal acquisition and actuation module (SAM-F) may have been damaged during module assembly. As a result, the module could fail without warning, increasing the risk of a crash. Dealers will inspect and replace the affected modules as necessary. This recall is scheduled to begin on May 2, 2008. The Mercedes-Benz recall number is 2008 030005.

See more recalls 2

Mercedes-Benz SL550 Reviews

My car has 27,000 miles and starts shaking and making a funny noise. I have a 2009 GL 350, the display panel is not working. I really feel that Mercedes is no longer selling top quality cars that they use too.

I love mine...It's the best car ever!!!

I purchased the SL in 2010, it had 10,400 miles on it. It now has just over 31,000 miles on the odometer. About 6 months ago a valve in the suspension malfunctioned. The extended warranty covered the valve replacement but I ended up paying $600 for fluid replacement. A month ago a hydraulic line in the suspension broke spraying fluid every where. A sensor periodically malfunctions displayi...

See more reviews 4