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850 dashboard lights went out

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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iancam33
Posts: 16
Joined: 30 December 2011
Year and Model: 850 wagon, 1995
Location: oregon

850 dashboard lights went out

Post by iancam33 »

I have a 1995 850 glt wagon with 130,000 miles on it and the lights always worked on it until yesterday when i started it the lights didnt come on so i fiddled with the switch a little and they still didnt come on. I noticed that when i would turn the parking lights on and turn the key one switch they worked but once i started the car they just turned off also the middle console lights ( Heat/Ac Radio buttons ) lights dont work either but the little radio screen light works, the little red light for the AC switch works and the little display figures in the dash board that tell you what time it is and what your mpg work but that light doesn't come on and today i started it and turned on the head light switch and they didnt come on and when I turned the ignition one click the lights didnt come on.
Please help !
Thank you!

jblackburn
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Year and Model: 1998 S70 T5
Location: Alexandria, VA
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Post by jblackburn »

Try fiddling with your dimmer switch and see if anything happens. These are a very common failure item on the 850 series - the potentiometers in the switches develop a "dead zone" and stop letting the current pass through.
'98 S70 T5
2016 Chevy Cruze Premier


A learning experience is one of those things that says, "You know that thing you just did? Don't do that."

mercuic: Long live the tractor motor!

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rspi
Posts: 7303
Joined: 5 November 2011
Year and Model: 850 T-5R Wagon
Location: Cincinnati OH
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Post by rspi »

+1 With Black, my dimmer works on the final 15% of the bright end of travel and only shows the lights full bright.
'95 855 T-5R M, Panther - 22/28 mpg, 546,000 miles
'95 955 T-5R Yellow Wagon, Lemonade, 180,000 miles
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iancam33
Posts: 16
Joined: 30 December 2011
Year and Model: 850 wagon, 1995
Location: oregon

Post by iancam33 »

Wheres the dimmer switch located ?

jblackburn
MVS Moderator
Posts: 14043
Joined: 8 June 2008
Year and Model: 1998 S70 T5
Location: Alexandria, VA
Has thanked: 9 times
Been thanked: 19 times

Post by jblackburn »

Slider switch on the left side of the steering wheel. near the headlight switch on the S70.
'98 S70 T5
2016 Chevy Cruze Premier


A learning experience is one of those things that says, "You know that thing you just did? Don't do that."

mercuic: Long live the tractor motor!

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