nothing is working buttons do nothing blower does nothing hot air comes out dash vents can't stop it 87 300sdl don't know where to start thanks in advance
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If I remember correctly from previous threads this model could suffer from dry solder joints on the climate control. Fairly easy repair to remove and reheat all of the joints. Good luck.

1) Does the blower change speed? Can you set it high to low?

2) When you push any of the control buttons do you hear things changing or moving at all?

3) Have you verified all fuses are OK?

All of the climate control can suffer from cold solder joints. If you are interested I would be happy to re-flow the unit for you. See my link in my signature below for more information.

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82 300SD 145k
89 420SEL 210k
89 560SEL 118k
90 300SE 262k RIP 5/25/2010
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91 300D 2.5 Turbo. 241k
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93 300E 195k

Well you can stop the heat by pulling the plugs. I would start with a reflow of the CCU.

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1995 E420 Schwarz
1995 E300 Weiss
#1987 300D Sturmmachine
#1991 300D Nearly Perfect
#1994 E320 Cabriolet
#1995 E320 Touring
#1985 300D Sedan
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