Other than a defective motor, a bad switch or blower motor resistor assembly can cause an inoperative heater blower motor.
Resources for the Repair and Maintenance of your 1993 Mercedes-Benz 500SL
1993 Mercedes-Benz 500SL
1993 Mercedes-Benz 500SL Problems
High mileage vehicles may develop a transmission fluid leak from one or more of the oil seals.
As vehicles age, various problems may develop with the hard and soft tops. If problems are encountered, it would be recommended to have a technician familiar with these tops perform the diagnoses.
The bushings for the shifter lever wear out to the point where they break and fall out. This causes excessive movement (loose feel) in the shifter lever and a clanging-type noise when changing gears.
The engine wiring can degrade because the insulating material falls off leaving the bare wire exposed. This can cause many problems depending on which wires are exposed and what they touch.
1993 Mercedes-Benz 500SL Questions and Answers
Hi, can you provide instructions on locating and cleaning the mass air flow sensor(s)? for my 93 500SL
96 S500. Failed emission test. Changed the O2 sensor, however, mechanic said I need to drive the cay 100 miles for the system to reset. I did and went back for retesting, mechanic said the car is s...
Shifter on 2004 SL500 gets stuck in Park, able to shift eventually and once out of park can shift from drive to reverse - on downhill shift lock is more pronounced and more difficult to remedy.
My convertible top does not open automatically (it leaks hydraulic fluid). We manually opened the soft top and placed the hardtop securely in place yet the alarm sounds constantly during accelerati...