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  1. #1
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    how do i reset immobiliser on 95 850 so i can program new key fob ?

    Ok -so i have a bit of a problem. I armed my 95 850 using the keyfob and then the keyfob broke.how do i now reset the alarm / immobiliser so i can program a new fob ?

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    I got stuck a few years ago in a Tesco car park when my key fob just stopped working for some reason. Opening the door with the key resulted in the alarm sounding, even putting the key in the ignition and turning the ignition on didn't deactivate the alarm and the immobilizer wouldn't deactivate. Didn't matter what I did (disconnecting battery, leaving it for a few hours, new keyfob battery etc) I couldn't stop the alarm sounding or deactivate the immobiliser. I found out that what I had to do was open the vehicle, let the alarm sound then wait (23 seconds I believe !) for the alarm to stop (the hazards continue to flash though). As soon as the alarm stopped I turned on the ignition, the hazards did a funny double flash then stopped, the car then started !. I got it home, locked it up with the key intending to look at it the next day, went out the next morning to find the key fob was working again and it's never done it since !. Don't know if this helps, mine is a 96 850R.
    Old Car: 855 T5 in Grey and rust
    Modifications: Not enough !
    NEW CAR: Citroen C4 coupe 1.6 HDi,
    Modifications: Nowt.....yet !
    RECENT ARRIVAL: 855 R in Black
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    LeeT5 (Tuesday 26th March 2019)

  4. #3
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    Mr Bananas you are a superstar. You'll never guess what happened to me tonight.

    Tried to open the car with the fob, nothing. The fob was beeping so I knew the battery was ok. Problem is my door lock doesn't work and the boot lock doesn't either so I had no way of opening the car...

    Anyway after an hour I managed to get the locking system to unlock but then the alarm was going off and the car wouldn't start.

    I used your method above and hey presto it started and disabled the alarm. I re-registered my fob and another one I have lying around and all is well. The alarm must have 'forgotten' my fob for some reason.

    Your info saved the day!
    1996 Olive Green 850 AWD - Follow the Project - Forged rods, 19T, big blue injectors, 960 TB, 3.25" MAF, Ostrich, 608 binary, arduino data display, active exhaust control with Focus RS tips, 320mm front brake conversion.
    1996 Nautic Blue 850 AWD - Failed its MOT, now it's a donor for the green thing.

  5. #4
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    Quote Originally Posted by Dangerous Dave View Post
    Mr Bananas you are a superstar. You'll never guess what happened to me tonight.

    Tried to open the car with the fob, nothing. The fob was beeping so I knew the battery was ok. Problem is my door lock doesn't work and the boot lock doesn't either so I had no way of opening the car...

    Anyway after an hour I managed to get the locking system to unlock but then the alarm was going off and the car wouldn't start.

    I used your method above and hey presto it started and disabled the alarm. I re-registered my fob and another one I have lying around and all is well. The alarm must have 'forgotten' my fob for some reason.

    Your info saved the day!


    Glad you sorted it Dave

    Now fix those door locks...

    2004 V70R 6spd manual:: Custom JRtuning REMAP @ peak 21psi :: Custom 2.75" exhaust :: TTV SMF + 07 Clutch :: WG 5.0 psi :: Tints :: IPD R gauge Rev.3 :: CFWerks door pod :: Forge CBV + yellow spring :: Windowed stock housing + blue filter :: Powerflex :: Superpro Engine mount :: Brembo Dot 5.1 :: TW FMIC :: Eibach 5mm spacers :: Brembo 330mm drilled discs :: iMiV 'Classic'+ BT :: D2R XENARC 5500k + LED H7 + LED H3 :: VolvoTech CFE OBD-V1 :: See garage for full mod list

  6. #5
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    Quote Originally Posted by LeeT5 View Post


    Glad you sorted it Dave

    Now fix those door locks...


    It's because I fitted V70 colour coded handles and tailgate handle. The doorlocks don't exactly swap over so I had to make a frankenlock out of the two but ended up snapping one of the parts which I never got round to replacing. And the tailgate handle I bought didn't have a lock in it, just a blanking plug and the 850 one is different. Need to get some spare locks I'm afraid (or put the old ones back on )
    1996 Olive Green 850 AWD - Follow the Project - Forged rods, 19T, big blue injectors, 960 TB, 3.25" MAF, Ostrich, 608 binary, arduino data display, active exhaust control with Focus RS tips, 320mm front brake conversion.
    1996 Nautic Blue 850 AWD - Failed its MOT, now it's a donor for the green thing.

  7. #6
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    ended up going to main dealer.they removed the relay and re-programmed it to a new keyfob.

  8. #7
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    How much did they charge (if you don't mind me asking)?
    1996 Olive Green 850 AWD - Follow the Project - Forged rods, 19T, big blue injectors, 960 TB, 3.25" MAF, Ostrich, 608 binary, arduino data display, active exhaust control with Focus RS tips, 320mm front brake conversion.
    1996 Nautic Blue 850 AWD - Failed its MOT, now it's a donor for the green thing.

  9. #8
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    Thats some handy info there from Mr Nobananas, did something very similar many years ago to get my olive T-5r mobile again, when I had to use the spare key on which the fob didn't work. It seems you can trick the alarm/immobiliser into turning off.

    Current Volvo's 1995 854 Gul T-5R 1996 855 Olive T-5R 1997 855 Olive AWD 1999 V70R AWD and 2005 XC90 D5 AWD
    Previous Volvo's 1987 745 gle 1989 745 GL 1995 855 Olive GLE 2001 V70 p2
    My Ebay Items http://www.ebay.co.uk/sch/moleadrian...p2047675.l2562


 

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