I have been a Mercedes Tech for 30 years now and have heard some crazy things from shop owners. So please give your input.

1. Bad guide rod bushings warp brake rotors.
2. If the a/c doesn't work the car will run hot because the auxiliary fan won't come on.
3. a rear dome lamp without a bulb, if switched on, will run the battery down.
4. a/c system is weak, maybe the expansion valve is" flooding".
5. Customer service is a mentality people buy into.

Thanks for your thought's.

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1982 300 td. 268k
1984 300d .345k
1986 190e 2.3 16v
1988 190e 2.3
1989 190e 2.6
1991 300e
1984 318i