94' SL-500. Air works great sometimes. Not at all other times.1st time its started in morning seems to work great. During the day, we may start it & doesn't work at all.

Debbi Caudill

Asked by Jul 22, 2013 at 03:27 PM about the 1994 Mercedes-Benz SL-Class SL500

Question type: General

Air works when first started. During the day may or may not work after that.

3 Answers


Ask your mechanic if your car has a monovalve control for the climate unit. These go bad in Mercedes as soon as 60k miles. It's basically a thin rubber disk that is moved up and down. Once these rip, the symptom becomes occasional a/c or occassional heat in a hit or miss fashion. The repair is under $500 - or should be.

2 out of 2 people think this is helpful.

What are you asking for this car. Paul Davis. 910-633-3927.


Debbi what are you asking for this car. Paul Davis.10-633-3927.

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