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1995 850 warning lights on dash stay on when key is off

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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roup
Posts: 17
Joined: 21 August 2012
Year and Model: 850, 1995
Location: Washington State

1995 850 warning lights on dash stay on when key is off

Post by roup »

The warning lights just started staying on when the car is shut off and the key removed. I've removed all of the relays to see if one was bad and the lights still stay on. This has run down the battery. I now have to disconnect the battery when the car is shut off to prevent the battery from being drained.

When the car is started the warning lights go off and the car operated normally. This only occurs when the ignition is shut off.

jblackburn
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Post by jblackburn »

I'm going to venture a guess as to something bad internally with the electrical portion of the ignition switch. Those lights should not be on unless something in the ignition circuit is feeding them power (like shorting contacts within the switch).
'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!

roup
Posts: 17
Joined: 21 August 2012
Year and Model: 850, 1995
Location: Washington State

Post by roup »

Is there a way to test the ignition switch? Can part of the switch be replaced if found bad so I don't have to rekey the car?

cn90
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Post by cn90 »

Or bad ground circuit.
2004 V70 2.5T 100K+
2005 XC90 2.5T 110K+

jblackburn
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Post by jblackburn »

roup wrote:Is there a way to test the ignition switch? Can part of the switch be replaced if found bad so I don't have to rekey the car?
Yep, just the electrical portion can be replaced.

http://www.fcpeuro.com/products/volvo-i ... 4AoddH0AIg

You can pull it out of the steering column (see write-ups in the repair database section of the site for removal) and see if the wires/insulation are shorting out and see if it cuts the dash lights off. Try moving the steering column adjustment up and down - some have reported weird problems with the wiring over many years.
'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!

cn90
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Post by cn90 »

1+,

At that age, replace the ignition switch anyway.
It is $50 at dealer.
Be wary of aftermarket parts.
2004 V70 2.5T 100K+
2005 XC90 2.5T 110K+

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BEJinFbk
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Post by BEJinFbk »

Unplugging the ignition switch should tell you if it's the problem.
Be careful when doing this as the connector cover is the only
thing that holds the contact pins in place once the connector
is unplugged from the back of the switch.
'98 V70 R - Well Equipped for Life Up North... ;)

roup
Posts: 17
Joined: 21 August 2012
Year and Model: 850, 1995
Location: Washington State

Post by roup »

I charged the battery to find that it did not hold a charge. Looked at the date and found it was 9 years old. Replaced with a new one. Hooked it up and lights still on at the dash.

I removed the steering column cover and the wires looked good. Moved the column up and down. Did not change light situation as they are still on. Unplugged the ignition switch and lights are still on.

To recap. All relays remove and ignition switch unplugged. All warning lights still illuminated on dash. Looks like something may be shorted somewhere. Where should I start looking?

cn90
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Post by cn90 »

IS there someone with a similar instrument panel that you can swap as an experiment?
2004 V70 2.5T 100K+
2005 XC90 2.5T 110K+

roup
Posts: 17
Joined: 21 August 2012
Year and Model: 850, 1995
Location: Washington State

Post by roup »

Unfortunately not many Volvo's around southeastern Washington. I called a large auto wrecker in Spokane and they did not have anything. Looks like I need to trace down a short somewhere. Any idea of a good place to start?

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