E-Class (W124) 1984-1995: E 260, E 300, E 320, E 420, E 500 (Includes CE, T, TD models)

Cold start Electrical Problem

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Old 02-24-2008, 08:18 PM
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1995 e320 sedan
Wink Cold start Electrical Problem

During the colder days this winter when I started the car the stereo and seat heaters had no power. After a few minutes warmup the power returned. Is this normal in a 1995 e320 sedan or if not, where would I begin looking for the cause?
Old 02-24-2008, 08:52 PM
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1990 300ce 24v I6
Hate to be this guy, but use the search feature in this thread. You should find a TON of related threads.
Old 02-24-2008, 09:47 PM
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1995 E320 SE, 162,000 Miles (Sold)
Originally Posted by tok2ross
During the colder days this winter when I started the car the stereo and seat heaters had no power. After a few minutes warmup the power returned. Is this normal in a 1995 e320 sedan or if not, where would I begin looking for the cause?
No, it's not normal. Looking at the wiring schematic, they appear to be different circuits so that's very strange. I don't have a clue offhand but I would start by wiggling wires and connectors around. Also remove and re-insert all the fuses. They sometimes develop loose connections that come and go.

I had a somewhat similar problem where the phone mute wire would ground out when the interior warmed up and mute the radio. I ended up cutting the wire since I didn't use the phone, obviously.
Old 02-25-2008, 08:29 PM
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I have used the search feature and while there are some articles on power and cold starting nothing specific to my problem or to the w124 was found!
Old 02-25-2008, 08:31 PM
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Originally Posted by shdoug
No, it's not normal. Looking at the wiring schematic, they appear to be different circuits so that's very strange. I don't have a clue offhand but I would start by wiggling wires and connectors around. Also remove and re-insert all the fuses. They sometimes develop loose connections that come and go.

I had a somewhat similar problem where the phone mute wire would ground out when the interior warmed up and mute the radio. I ended up cutting the wire since I didn't use the phone, obviously.
Thanks for the advice. Its too warm to do much with it now other than re-seat the fuses, clean switches and browse the wiring diagrams over summer.
Old 02-25-2008, 09:31 PM
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1995 E320 SE, 162,000 Miles (Sold)
Originally Posted by tok2ross
Thanks for the advice. Its too warm to do much with it now other than re-seat the fuses, clean switches and browse the wiring diagrams over summer.
Warm? Where in the world do you live?! Way to rub it in...it's 30°F with a 30 mph wind here.

But not for long- I'm moving to the US Virgin Islands!

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