2003 Mercedes-Benz SL55 AMG Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2003 Mercedes-Benz SL55 AMG

2003 Mercedes-Benz SL55 AMG 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 engine may develop a stalling and/or no start condition due to a failed crankshaft position sensor.

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2003 Mercedes-Benz SL55 AMG Questions

What should it cost to replace the supercharge and other fan belt?

Oil leaking right side

I pressed the button and it doesn't open. The one on the other side doesn't open either. Is there some kind of lock that I'm missing.?

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2003 Mercedes-Benz SL55 AMG Recalls

There is a faulty software calibration that affects several areas including shutting off the fuel supply in a collision. This could cause a fire hazard during an accident. Dealers will reprogram this software. The Mercedes-Benz recall number is 2008 070001. This recall began during August, 2008.

Due to deterioration of the wiring harness connection or failure of the hydraulic pump, the sensotronic brake control (SBC) system may default to the hydraulic back-up mode. In the back-up mode, the driver has braking power sufficient to stop the vehicle, but greater brake pedal pressure is required and brake pedal travel will be noticeably longer. Dealers will install a bracket and replacement ground wire to the SBC pump unit on all affected vehicles. Additionally, dealers will inspect and replace the SSC pump unit in certain SL models. The Mercedes-Benz recall numbers are 2005070007 AND 2005110001.

 

High mileage combined with a high number of brake actuations, or a high brake actuation frequency, can cause the pump motor of the SBC to run out of permissible tolerances. As a result, excessively high pressure may build the high pressure line of the brake system. If this occurs, the system will switch into the hydraulic function mode as designed. Sensotronic brake control is disabled when the brake system is functioning in the hydraulic mode. Dealers will inspect the SBC hydraulic unit and replace it if necessary to correct this concern. The Mercedes-Benz recall number is 2004 050014.

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2003 Mercedes-Benz SL55 AMG Reviews

Very strong drivetrain. Issues are with electronics and accessories, particularly Active Body Control. Shame the rest of the car isn't a great as the engine and transmission, but it still is a wonderful beast! It's a completely different car from the standard SL with the non-supercharged engine.

Car is amazing in every way power Handling looks , however its like maintaining a high performance race car which i guess it some what is. Just disappointing thought Mercedes made a more reliable vehicle In a period of 6 months my hydrolic suspension puked all over my driveway and the car dropped to the floor then the motor mounts went and the car felt like it was going to break apart. then t...

The most unreliable car I've ever owned. Here is the abbreviated version of my car's failure list since I purchased it with 42K miles about 2 years ago (now about 60K miles): Supercharger pulley bearings broke, idler pulley bearings broke, closure panel for folding hardtop failed (other roof closure trim broke and came off), ABC suspension has failed and required major work twice, shifter has f...

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