Mercedes-Benz SL500 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your Mercedes-Benz SL500

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Mercedes-Benz SL500 Problems

Harsh Ride From Rear Due to Failed Dampening Actuator

Vehicles with automatic level control that ride harshly in the rear (no give in the suspension) may have one or both dampening actuators which have failed. It is commonly recommended the actuators be replaced in pairs.

Erratic Engine Operation and Poor Fuel Economy Due to Faulty Mass Air Flow Sensor

A faulty mass air flow (MAF) sensor can cause erratic/rough engine operation and fuel economy issues. Since this sensor measures the actual amount of air entering the motor, when it fails, the engine control module (ECM) takes the wrong information and delivers incorrect volumes of fuel to the cylinders.

Engine Oil and Coolant Leaks Resulting in Fulid Intermix

Internal and External engine oil & coolant leaks can develop from the head gasket and/or timing cover gasket; these leaks should be repaired before the engine oil and coolant intermix which can result in severe engine damage.

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Mercedes-Benz SL500 Questions

My headlights and tail lights do not come on. Everything else works Brk lghts (1 answer)

Brake lights, turn signals, flashers, and high beam when I hold the lever in all work fine.

Does car crank when belt breaks (2 answers)

Does the fluid leaks when the belt breaks

I charged small battery under hood now I get a message that electric components (1 answer)

the car will not start at all
Message says electrical components offline

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Mercedes-Benz SL500 Recalls

Incorrect Software Calibration May Cause Fuel Pump to Remain Powered in a Collision

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.

Sensotronic Brake Control System May Default to Basic Hydraulic Mode

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.


The Sensotronic Brake System May Be Disabaled

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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Mercedes-Benz SL500 Reviews

Bought this 1 1/2 yrs ago @ 83,000 mi. Now has 89,000 and is 15 yrs. old. Can't believe how in love I am with it. Everything works, nothing has gone wrong. A true head turner. Hope I didn't just jinx myself with all the accolades.
Bought this car in 2008. Love it,no problems or issues. Its perfect for my wife and I to get on the highway and go for a cruise. Love it.
I just bought a 2006 SL500 with 42.000 miles and took it into Mercedes shop in Shreveport La. for B service and battery not charging right on rear battery. I was told it would run around $495 for B service and I had $100 deductible on the car insurance I bought for three years for $3900 for repairs. The battery was in warranty with it stamped on post good until 2015. They keep it 5 days and too...

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