Re: Start Up Problem for a 1979 300SD?

If the battery has been drained overnight there are some suspects on 
your model:

The cursed climate control "servo" is re****ted to drain a battery.
The car's power antenna is known to drain a battery.
A stuck power window switch can drain the battery.

If you need to replace the servo I'd suggest you check out a digital 
retrofit system from www.unwiredtools.com. I installed it on my '80 
300SD and it works well.
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