FEAR COUNTRY

glad I have heat though, it was a cold week of traveling.

I do need to find out why the buttons on the climate control are so unpredictable...

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1985 300SD

probably the pushbutton unit is going bad.

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punkinfair

trying to search for old posts on this topic and I notice the mention of "cold solder" trouble...

was wondering though, are there contacts that can be cleaned up inside the unit? Or is it time for a hefty purchace?

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1985 300SD

There is a kit to replace the internals. At some point I also replaced the entire valve, so I have a spare.

Edit: Here is the kit:

http://www.allpartsexpress.com/ShopByVehicle.epc?q=&yearid=1982%40%401982&makeid=MERCEDES+BENZ%40%40MERCEDES+BENZ%40%40X&engineid=1193767%40%40300DT+%2FL5%5F3%2E0L%5FDIESEL%5FTurbo%40%40300DT&keyword=heater&subcatid=Heater+Valve+Solenoid+Kit@@Heater&mode=PA