1999 Mercedes-Benz S500 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1999 Mercedes-Benz S500
- Closing Assist/Door Lock Issues Due to Pneumatic System Problems
- Engine Performance Problems Due to Crankshaft Position Sensor Failure
- Replace Brake Rotors When Pads are Worn and Squeaking
- Insulation Degrades on Engine Wiring Harness and Leaves Conductors Exposed
- Leaks Develop at Differential Seals/Cover on High Mileage/Older Vehicles
1999 Mercedes-Benz S500 Problems
Problems with the pneumatic system can cause closing assist and door lock issues.
The crankshaft position sensor may fail. Symptoms of this are: The engine will crank—but not start—especially when the engine is warm. The car may start again if it is left to cool off, but it may run roughly or have poor performance.
The brakes may begin to squeak at about the 50 percent wear point. This is due to the size and material used for the brake pads and rotors. The brake rotor surfaces become uneven, causing a lip to form at the outer edge. This will generally require replacement of the rotors when the pads are worn (pad life varies depending on driving style and terrain).
1999 Mercedes-Benz S500 Questions
the car is running fine except for the check engine light being on. Can i continue to drive it?
I have to manually push down and up on all the doors to lock and open, the driver door I have to use the key to open and look. The doors do slowly close with that close assist feature but the trunk has to be slam shut. Fuses are all ok. I can hear the closing assist pump make a little Hiss sound ...
the noise is coming from the passenger side underneath more so towards the rear tire. Its very loud and it sounds like a annoying jet sound and it stays on all the time. Actually it's a very Embarrasing sound when stop idling.