The solder joints on the control unit circuit board can crack. If you're handy with a soldering iron, you can reflow those. I did that on my W123 to resolve some ACC wonkiness (been long enough that I don't really remember the symptoms though).
Weird that defrost doesn't work, that is the "failsafe" mode AFAIK. Allan Donald Snook via Mercedes <mercedes@okiebenz.com> writes: > The vent doesn’t work at all — ac or vent or defrost. The seller installed a > new (reman) blower motor and claimed that the problem was in the CCU. Anyone > have one to sell? I found some on eBay. Feel free to reply here or message > me directly at: > > donald.sn...@fedex.com > > Donald H. Snook > > > _______________________________________ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
