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Service light mystery Topic is solved

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
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Danonly55
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Service light mystery  Topic is solved

Post by Danonly55 » Sun Apr 14, 2019 10:30 pm

I took my first long trip in my 1996 850, After arriving at my destination My service light would light up after restarting the car and last for about 30 seconds then go out ?? All fluids and filters are good ,fresh and clean. Any Ideas what may be going on. My OBD is not showing any faults.
Last edited by Danonly55 on Mon Apr 15, 2019 9:51 am, edited 1 time in total.


1996 Volvo 850 sedan base
1980 Mercedes benz 300sd " Shotzie"
1997 Ford f350 7.3

Life is tough, but it's tougher when your stupid'
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Re: Check engine light mystery

Post by jeffsws » Mon Apr 15, 2019 1:07 am

Are you sure it's the check engine light and not the service light?



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Re: Check engine light mystery

Post by Sommerfeldt » Mon Apr 15, 2019 1:21 am

check_engine.jpg
- S


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Re: Check engine light mystery

Post by abscate » Mon Apr 15, 2019 1:56 am

In North America it will say CEL which is Greek for check engine light. No foreign letters allowed on dashboards here, we build wa λ λ s to keep them out.
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Re: Check engine light mystery

Post by Sommerfeldt » Mon Apr 15, 2019 2:34 am

abscate wrote:
Mon Apr 15, 2019 1:56 am
In North America it will say CEL which is Greek for check engine light. No foreign letters allowed on dashboards here, we build wa λ λ s to keep them out.
:lol: :lol: :lol:


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Re: Check engine light mystery

Post by tardcart » Mon Apr 15, 2019 6:27 am

strange, did you also check for pending faults? its a different check in the menu. but I doubt thats it. something odd in the transmission or ECU or wiring would seem most likely. I know that doesn't narrow down much.



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Re: Check engine light mystery

Post by Danonly55 » Mon Apr 15, 2019 9:48 am

I was mistaken it is the service light, not check engine. my bad guys
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Re: Service light mystery

Post by MrAl » Tue Apr 16, 2019 3:53 am

Hi,

My 'service light' comes on every time i start the car and stays on for 2 minutes then goes out. That is normal for my make/model/year.
For my car i have to buy a 'tool' to plug into the ODBII connector to turn off the service light but for yours you may be able to push some buttons in a certain sequence to get it to stay off. For me i dont mind it coming on anymore and actually like to use it for a warm up timer now. The check engine light is a different light though and that comes on when something is wrong with the engine/system/etc.
The 'service light' is just there to remind you to get an oil change or something like that.

You should have taken a picture when only the light you are talking about was lit not when all of them are lit as then it is impossible to tell for sure which light you are talking about. Maybe it was the dome light :D


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Re: Service light mystery

Post by Danonly55 » Tue Apr 16, 2019 5:57 am

It is defiantly the service light, It does exactly what yours does, But it just started doing it. The car runs fine. I will leave my OBD reader in and use my 850 OBDII reader app and see if can pick it up. " Dome light" thats funny !


1996 Volvo 850 sedan base
1980 Mercedes benz 300sd " Shotzie"
1997 Ford f350 7.3

Life is tough, but it's tougher when your stupid'
" John Wayne

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Re: Service light mystery

Post by abscate » Tue Apr 16, 2019 6:28 am

Danonly55 wrote:
Tue Apr 16, 2019 5:57 am
It is defiantly the service light, It does exactly what yours does, But it just started doing it. The car runs fine. I will leave my OBD reader in and use my 850 OBDII reader app and see if can pick it up. " Dome light" thats funny !
Someone reset it 7500 miles ago (?) and now its performing its "remind you" function
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1 SWMBO for 30 years
2 Volvos
3 VWs
4 Careers
5 cats/dogs/gears
6 Perfect Ladies in waiting
7 Drivers
8 Boats- with a big pointy metal thing on top

1999 V70 T5M 56 2005 V70 NA M56 VWs BMW

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