BenzWorld Junior Member
Date registered: Nov 2011
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1986 300 E (160K)
The defroster and the ignition wiring are having trouble getting it together. The defrost blows for 5 seconds to normal functioning range. To correct the problem of no defrost I would turn the ignition off and back on; The defrost would then funtion. When I drive 20 minutes, tyurn off and on my return trip the defrost will work. It feels like a relay is required to draw too much wattage vis a vis the defrost and opens.
The key lock set has been replaced,
The was a major roasting due to a radio replacement (former owner) There are various electrical problems related to doors and windows etc. But this is the first time with trouble with the heating functions.