2008 Mercedes-Benz SL550 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2008 Mercedes-Benz SL550
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2008 Mercedes-Benz SL550 ProblemsCamshaft Adjuster Solenoid Failure
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.
A vibration felt through the center floor of the vehicle can be caused by driveshaft flex discs, which crack and shred, causing excessive driveshaft movement. Not repairing these can cause damage to the driveshaft center support bearing, or, in the worst case scenario, damage to the transmission or differential.
Front thrust arm and control arm bushings can crack and sometimes tear completely. If this is not repaired quickly, damage to the front subframe unit will occur, which is very expensive to repair. Updated control arms (that prevent damage to the subframe when the bushings wear out) are available.
2008 Mercedes-Benz SL550 Questionshave a squeak when driving (1 answer)
squeak appears to be behind me when driving, louder on rough roads and almost silent on smooth roads. squeak with top down or up; not as loud with top down.
I left a store and the car was very slow and the RPM's were up to 4000 plus and going nowhere. i shifted to N and back to D and it then started acting normal. I drove it back home next day about 200 plus miles and had no issues. Would it be a fluke or bite me later?
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.
2008 Mercedes-Benz SL550 RecallsInternal Failure of Front Interior Control Module
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.