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#1
01-10-2012, 12:07 PM
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Weird noise at rear? BATTERY @ 4.5V by morning
The newest in a long line of problems with my '79 300TD. I turn off the car and can clearly hear a noise coming from the driver side rear corner of the car. The sound is like a whine up then a whine down. I've temporarily disabled the SLS for other reason but from what I can tell there is nothing electrical in that system. I've searched archives here and Benzworld and I've so far seen that a faulty SERVO can also put a drain on the battery. My servo is leaky and i'm planning to replace it soon. But there was also a reference to the rear latch mechanism burning out and shorting at 16 amps. Is that the flat black box behind my spare tire? Any other ideas. Please help! I'm watching Kent's troubleshooting video now.
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#2
01-10-2012, 12:33 PM
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Does your car have an automatic antenna?
__________________
1981 300TD 310k miles 1970 280sel 172k miles 1966 230 Fintail 162k miles "Where are we going? And why am I in this hand basket?"
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#3
01-10-2012, 01:07 PM
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There's a switch for the antenna. The antenna itself hasn't worked for a few months. It's stuck in the retracted position. Once i charge/replace the battery i can see if it's that circuit with a test by light by pulling the fuse, as per Kent Bergma's instructional video. Is that a common spot for a short?
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#4
01-10-2012, 01:16 PM
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And if i determine that it is the antenna is that motor the flat black box next to my spare tire? I'll take a look now. I'm assuming i can just disconnect the power supply for now and take a look at repairing it when i get home.
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#5
01-10-2012, 01:19 PM
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Yup, one single power plug on the top of the antenna motor. Disconnect it and see if the problem goes away.
-J
__________________
1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket  Tesla Model 3. 205,000 miles. Been to 48 states! Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels. 2014 Cadillac ELR 2013 Fiat 500E.
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#7
01-10-2012, 07:53 PM
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Do you have electric central locking? the pumps can run on those if a vacuum pod in the doors has failed. The motor does not stop but keeps running.
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#8
01-10-2012, 10:17 PM
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I don't think it's electric. There's no switch. I turn the key and the two driver side doors lock reluctantly. The passenger side ones don't. I just got a vacuum pump rebuild kit hoping it will solve all of my vacuum related problems (hard brakes, door locks, trannie sometimes doesn't like 2nd). I'm going out now to see if it's the antenna circuit on Fuse #2.
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#9
01-10-2012, 11:37 PM
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Quote:
__________________
1968 230S Automatic, Elfenbein 1975 O309D Executive Westfalia Camper Bus, Blau/ Weiss 1972 280SEL 4,5 Dunkelrot 1966 VW Type 34 "Grosser" Karmann-Ghia 1963 VW 1500 Variant Pearlweiss 1969 VW Variant Automatic, Perugruen 1971 VW Squareback Automatic, Clementine Orange 2001 E320 4Matic Wagon- Our belated welcome to the 21st century! Polar White 1973 280SEL 4,5 Sliding Roof "The Bomb", Dunkelblau.
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