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'92 850 Key Fob only flashes the blinkers, does not unlock. Topic is solved

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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koralski
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Year and Model: '92 850
Location: Sofia, Bulgaria
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Re: '92 850 Key Fob only flashes the blinkers, does not unlock.

Post by koralski »

It has A/C + heater.

Image

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misha
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Year and Model: '97 850 2.5 20v
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Post by misha »

Why it's in F and not in C?
1st problem is...that ecc is NOT for '92.

That's why i asked for a picture of whole dashboard.

This is how early ecc for early cars from '91-early '94 looks:
photo 1.JPG
photo 1.JPG (42.77 KiB) Viewed 116 times
Ecc from the picture you posted is from late '94-'97.
Last edited by misha on 09 Apr 2025, 11:17, edited 2 times in total.
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS

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koralski
Posts: 47
Joined: 13 March 2025
Year and Model: '92 850
Location: Sofia, Bulgaria
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Post by koralski »

Its an example picture, i have the same one in C.

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misha
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Post by misha »

The same one in C for '91-early '94 should look like the one from the picture i posted.
Those are early ecc units for early cars.
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS

User avatar
koralski
Posts: 47
Joined: 13 March 2025
Year and Model: '92 850
Location: Sofia, Bulgaria
Has thanked: 4 times
Been thanked: 7 times

Post by koralski »

No, mine is like the picture I posted.

Its fully possible it was replaced sometime in the life of the car...

What does that have to do with the locking?

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misha
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Year and Model: '97 850 2.5 20v
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Post by misha »

Because....when you post a picture of whole dash....we can determine if the dash is original or was replaced sometime in the past.

That answer will provide more answers about what factory alarm the car have from the factory(basic alarm,guard alarm I)...since guard alarm II came from late '94 for model year '95.
If the dash is replaced...the LED by the windshield is also from late 850(it comes with the dash).The wiring & connector is different for that LED for early and later cars and the LED indicator itself came in two versions.
That anwers will provide the answer what double relay you need(there is black & grey for early cars and brown for later cars) for central locking to work properly.
I still claim that the LED you have by the windshield didn't come from the factory for '91,'92 & '93 850....but i need to see it,it's wiring and connector to be able to conclude if it's from later car(wiring comes with the dash).
Last edited by misha on 09 Apr 2025, 12:41, edited 1 time in total.
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS

User avatar
misha
Posts: 5379
Joined: 7 December 2008
Year and Model: '97 850 2.5 20v
Location: Serbia
Has thanked: 152 times
Been thanked: 402 times

Post by misha »

koralski wrote: 09 Apr 2025, 01:39 Image
Its original, it's this one.
Forgot to add....this fob is for guard alarm II,which again...is pretty strange.
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS

User avatar
koralski
Posts: 47
Joined: 13 March 2025
Year and Model: '92 850
Location: Sofia, Bulgaria
Has thanked: 4 times
Been thanked: 7 times

Post by koralski »

I got the brown double relay from the parts car. I'll get my dad to snap a picture of the whole dash.

User avatar
misha
Posts: 5379
Joined: 7 December 2008
Year and Model: '97 850 2.5 20v
Location: Serbia
Has thanked: 152 times
Been thanked: 402 times

Post by misha »

'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS

User avatar
koralski
Posts: 47
Joined: 13 March 2025
Year and Model: '92 850
Location: Sofia, Bulgaria
Has thanked: 4 times
Been thanked: 7 times

Post by koralski »

Yup, exactly this one.

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