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Old 10-26-2011, 02:48 PM
Registered User
Join Date: Jan 2011
Location: South East Virginia
Posts: 31
troubleshooting rear window '80 300cd

problem... inoperative driver's side rear power window.

effort to repair: pulled panel, track and motor...
- tested motor - it works
- replaced everything and no luck getting the window to operate.
- no power to rear switch - haven't checked driver's switch.
- checked and replaced fuses, still no power to rear switch
if i find there is no power at driver's switch and fuses check... where should I check next? oh! both passenger window have power.

note: almost ready for state inspection, window, headlight adjustment and front end alignment are the remaining fixes and i'm on the road.

thx... seadog
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Old 10-26-2011, 03:08 PM
79Mercy's Avatar
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Join Date: Mar 2008
Location: Florida
Posts: 4,128
Child locks on?
1985 300TD Turbo Euro-wagon
1979 280CE 225,200 miles
1985 300D Turbo 264,000 miles
1976 240D 190,000 miles
1979 300TD 220,000

GONE but not forgotten
1976 300D 195,300 miles
1983 300D Turbo 175,000 miles
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Old 10-26-2011, 07:12 PM
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Join Date: Jan 2011
Location: South East Virginia
Posts: 31
safety lock checks out... no problem here. after repeated/continous checking of all window switches and getting movement in all windows except rear left... passenger front stopped working. got frastrated and walked away for a few hours... returned and found that the right front - left rear 25A fuse had blown. replaced it and only the right front window operation was restored - still no action left rear. is this going to be a volt meter power check at the switch(s)? is there anywhere else to check?

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Old 10-26-2011, 07:35 PM
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Join Date: Mar 2008
Location: CT
Posts: 214
Try re arranging the switches in the console and rear seats from side to side to see if the problem follows the switch.
95 E300D working out the kinks
77 300D, 227k, station car
83 300CD 370k, gone away
89 190E 2.6- 335k, no more
79 VW FI Bus- 145k miles, summer driver
59 VW Beetle ragtop- 175k miles
12 VW Jetta- 160k miles
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Old 10-26-2011, 09:00 PM
Yak Yak is offline
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Join Date: Aug 2009
Location: San Antonio, TX
Posts: 1,711
It sounds like you've eliminated all the variables except the switches. Power goes through the console switch to the rear switch.

I'd look at the console switch first. Check connections, check for clean contacts. Swapping the console switch from right rear to left rear may be the easiest troubleshooting step. You may just be able to swap the connectors under the switch.
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