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Intermittent electrical problems: power windows and A/C

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

kumulipo
Posts: 11
Joined: Tue Feb 06, 2018 9:45 am
Year and Model: 1999 S70
Location: Merrickville, Ontario
Has thanked: 7 times
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Canada
kumulipo

Intermittent electrical problems: power windows and A/C

Post by kumulipo » Wed Jun 20, 2018 2:50 pm

Having problems with power windows from time to time. Turning the engine off and on usually restores function. A/C now doing the same thing. Suggestions? Thanks!

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wizechatmgr
Posts: 1344
Joined: Thu Jan 12, 2017 1:07 pm
Year and Model: 1999 V70 XC AWD 2.4T
Location: Albany, NY area
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wizechatmgr

Re: Intermittent electrical problems: power windows and A/C

Post by wizechatmgr » Fri Jun 22, 2018 8:10 pm

Ignition switch or bad relays would be my first thoughts.

Pull and check the relays in the small fuse box (assuming yours is like my v70)
You may find some are badly in need of cleaning with a wire brush or just outright are ready for replacement.

Note that I'm not an expert by any means with the S series.
Wisdom requires knowledge as a prerequisite, but knowledge can be developed due to a lack of wisdom.
In order to learn how to fix something, you must first learn how to break it.
1999 V70 XC AWD - ~187k miles

kumulipo
Posts: 11
Joined: Tue Feb 06, 2018 9:45 am
Year and Model: 1999 S70
Location: Merrickville, Ontario
Has thanked: 7 times
Been thanked: 1 time
Canada
kumulipo

Re: Intermittent electrical problems: power windows and A/C

Post by kumulipo » Sat Jun 23, 2018 10:27 am

Thanks for your reply. I've been away for a few days, hence my delay in responding. I will check things out! BTW, the S70 and V70 seem to be the same thing, just finished differently aft. Cheers!

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