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Resources for the Repair and Maintenance of your 2004 Mercedes-Benz SL500

2004 Mercedes-Benz SL500

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2004 Mercedes-Benz SL500 Problems

Suspension & Steering -- Verified

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.

Engine -- Verified

The engine may develop a stalling and/or no start condition due to a failed crankshaft position sensor.

Drive Train -- Verified

Leaks may develop from the differential cover and/or seals on high mileage or older vehicles. Our technicians recommend a complete reseal of the differential unit if these leaks are addressed.

Brakes -- Verified

As brake fluid becomes dirty over time, it can cause a failure of the anti-lock brake system (ABS) modulator assembly. Our technicians recommend a complete brake system flush every two years to help prevent this issue.

Miscellaneous -- Verified

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

2004 Mercedes-Benz SL500 Recalls (Recent)

Brakes, August 8, 2005

RepairPal Expert Overview:

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.


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Brakes, October 21, 2004

RepairPal Expert Overview:

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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Electrical & Lights, August 1, 2008

RepairPal Expert Overview:

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.

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2004 Mercedes-Benz SL500 Questions and Answers

lisacarlo, 2004 Mercedes-Benz SL500, Novato, CA

It got stuck half way and will not go up or down. I tried resetting with the roll bar as I had done before and nothing. Any ideas?

ldallas, 2004 Mercedes-Benz SL500, Fairport, NY

Can you please tell me where to check the power steering fluid? Please be specific!! Thank you so much.

Benz2004, 2004 Mercedes-Benz SL500, Westminster, CA

My car says "Service B exceeded by 100 miles" what is this? I just changed my filter and my oil and transmission oil.

Visitor, 2004 Mercedes-Benz SL500, Arlington Heights, IL

My 2004 SL 500 recently has displayed the warning light indicating brake pad ware. Is this to be expected after only 27,000 miles? If so would it be for the front, back or both? Do rotors typica...

OliOli, 2004 Mercedes-Benz SL500, San Jose, CA

The top continue to open when I open again. It still work fine.
Could it be a safety reason or there's a malfunction?
Thanks you very much!

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2004 Mercedes-Benz SL500 Reviews

Purchased 2004 with relatively low miles in April 0f 2011. As of March, 2012, it has become a nightmare. Invested over $5k in 2011 to fix issues that were missed in the pre-certification checkout process. Now, leaking hydraulic suspension, leaking hydraulic convertible top, and shoddy performance have me looking at an $8k repair bill, (on top of the roughly $6k spent last year.), for a wopping estimated total of about $14 - $15k in necessary repairs, in LESS THAN ONE YEAR. Next Move: Out of the shop, and onto the auction. It's not worth the headache. Should have kept my Corvette! Same thrills, at a fraction of the repair costs.

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