SL/SLC-Class (R107) 1971-1989 : 250SL, 280SL, 450 SL, 380 SLC, 450 SL, 380 SL, 560 SL

SL/R107: 1980 450 sl power windows

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Old Apr 17, 2012 | 11:26 AM
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wlin3's Avatar
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1980 450 sl
1980 450 sl power windows

The power windows stopped working in my 1980 450 SL and I can't seem to find the power window relays. I have checked behind the passenger kick panel where the fuse box is but cannot locate them. Can someone tell me where they may be? The fuse is good but no power at all at the motors.
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Old May 8, 2012 | 06:11 PM
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From: Ventura, CA
1980 450SL
Power window relay stopping both windows?

Since there is only one relay if power to it fails or the relay fails both windows fail to operate. The relay if near the fuse panel at the right side of passenger feet area. A relay fuse may be fuse number 7 and there are two fuses next to the relay covered by a small square plastic cover perhaps two inches across. Check these three fuses. Of course the relay could still be bad.
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Old Jul 20, 2012 | 12:58 AM
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1980 450 SLC
Similar, yet different issue - Driver window works, Passenger doesnt

I have a 1980 450 SLC, where the driver window works but the passenger does not.

I tried changing the switch in the console (from passenger to driver) so I know that is not the problem, but I am confused as to what else it could be.

All I can think is that the Motor itself is bad, unless there is some other relay that is involved ?!?
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