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1996 850 Turbo Clock resets + trip computer

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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BrokenWrench
Posts: 2
Joined: 15 October 2015
Year and Model: 1996 850 Tubro
Location: Woodinville,WA

1996 850 Turbo Clock resets + trip computer

Post by BrokenWrench »

The clock display functions fine for greater than 80% of the time. Sometimes when you start the car the Clock/trip computer resets. I am thinking it's a problem with a plug somewhere as the ignition switch was replaced less then 20K miles ago.

Any ideas?

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Clemens
Posts: 1932
Joined: 3 September 2015
Year and Model: 96 855 R + 94 855 T5
Location: Austria
Has thanked: 473 times
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Post by Clemens »

Could it be a dying battery? Does it only happen if you start it or if you just turn on the ignition as well?
Summer: 1996 855 R
Winter: 1994 855 T5M
Donor: 1995 854 10V

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erikv11
Posts: 11800
Joined: 25 July 2009
Year and Model: 850, V70, S60R, XC70
Location: Iowa
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Post by erikv11 »

A loose connector ribbon between the clock/computer and the cluster would give that behavior, and it is a known nuisance issue. I'd check it, you have to pull the top dash pad to do so, see the odometer gear repair instructions. Any bulbs need changing in the cluster?
'95 854 T-5R, Motronic 4.4, 185k
'98 V70, T5 tune-injectors-turbo, LPT engine, 304k, daily driver
'06 S60 R, 197k
'07 XC70, black, 205k
'07 XC70, willow green, 212k
'99 Camry V6 :shock: 153k
gone: '96 NA 850 210k, '98 NA V70 182k, '98 S70 NA 225k, '96 855 NA 169k

BrokenWrench
Posts: 2
Joined: 15 October 2015
Year and Model: 1996 850 Tubro
Location: Woodinville,WA

Post by BrokenWrench »

Sorry it took so long to try your idea, yesterday I removed the instrument cluster. (Removed the entire dash) I then took the cluster apart down to the speedo and re-soldered all connectors. I even opened up the trip computer and re-soldered the connectors on it.

Upon reinstalling the unit and starting the car and setting the clock, I went for a drive, the first time I shut off the car the clock went out and of course reset upon restarting. :(

Maxoner22
Posts: 4
Joined: 7 August 2025
Year and Model: 1996 854
Location: Argentina
Has thanked: 1 time

Post by Maxoner22 »

Did you find a solution for the dash clock resetting? I'm having the same problem with my 96 850...

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