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700/900 Series General Forum for the Volvo 740, 760, 780, 940, 960 & S/V90 cars |
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Volvo 740 GLT 1990Views : 642 Replies : 10Users Viewing This Thread : |
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Aug 18th, 2021, 13:39 | #1 |
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Volvo 740 GLT 1990
This car has electric seats fitted - that is, moved by electric motors. These don't work and we suspect the relay isn't working.
Does anyone know which relay it is and where it is? Yours Peter |
Aug 18th, 2021, 18:49 | #2 |
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Is the STOP button in or out?
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Aug 18th, 2021, 20:12 | #3 |
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Aug 19th, 2021, 11:23 | #4 |
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Thanks. The red lock button is out, fuse changed, suspect relay but don't know where is is.
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Aug 19th, 2021, 11:37 | #5 | |
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Quote:
The big thing is with the Volvo electric seats is the switch contacts tend to suffer lack of use. Use some contact cleaner and spray it in round the edges of the rockers in the switch panel, give it a few minutes to soak in then exercise each switch vigourously several times. Give it a few minutes more then switch the ignition on and try the switches. They may need more exercise but you should find at least one adjustment works - not necessarily in both directions so be careful not to "over-adjust" the seat until you've confirmed the adjustment in the opposite direction works.
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Aug 19th, 2021, 20:31 | #6 |
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My cars are 760s, of 1988 & 1989 vintage, and am presuming that the electric seats are similar to your car.
As well as checking that the stop button is not depressed, also ensure none of the others are stuck in forward/back or up/down modes, as this can stop the seat moving. There is no relay for the seat. There are two fuses, one which is of the resettable type, as noted by Laird Scooby. The resettable one, no. 35 on my cars, also protects the heated front seats, so may able to check they are working (assuming your car has them), The other fuse, no.19 on my cars, also protects other circuits; cigar lighter, door mirrors, tailgate wiper and ECC. Yout car may be different, but as you have changed the fuse, this shouldn't be a problem. After that it is a case of checking the wiring including the earth; mine are earthed at a point near the relays. |
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