Join Today
Results 1 to 8 of 8
  1. #1
    Member
    This user has no status

    Join Date
    Sep 2005
    Posts
    46
    Thanks
    0
    Thanked 4 Times in 4 Posts

    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 ?

  2. #2
    Senior Member
    This user has no status
    nobananas's Avatar
    Join Date
    Feb 2005
    Posts
    3,111
    Thanks
    201
    Thanked 528 Times in 448 Posts
    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 (dead and gone, well, most of it !
    Missus' ride: Citroen C4 coupe 1.6 HDi,
    Modifications: Nowt.....yet !
    Daily driver: 855 R in Black,
    Currently nursing a blown head gasket, new engine on its way !
    Recent addition: Freshly imported Honda Stepwagon,
    Slowly turning into a camper van !

  3. The Following User Says Thank You to nobananas For This Useful Post:

    LeeT5 (Tuesday 26th March 2019)

  4. #3
    New Identity
    Back in an AWD....Oh the grip!
    Dangerous Dave's Avatar
    Join Date
    Dec 2006
    Location
    West Midlands
    Posts
    8,921
    Thanks
    2,491
    Thanked 2,582 Times in 2,051 Posts
    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.
    2004 Sapphire Black S60 D5 - The new daily hack.

  5. #4
    Senior Member
    ...here we go again...
    LeeT5's Avatar
    Join Date
    Oct 2004
    Location
    Kent
    Posts
    5,337
    Thanks
    1,075
    Thanked 1,393 Times in 1,068 Posts
    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...
    2014 V60 Polestar 6spd Auto :: Polestar map peak boost 17.4psi :: IPD 3" DP + 150cel :: Polestar 2.5" exhaust :: Paddle Shift Geartronic :: Black glass :: Maxton Splitter :: K+N Filter :: IPD Aluminium Top engine mount :: Brembo 6 pots :: 20" Polestar rims :: Brembo 371mm floating discs :: Sensus RTi + DAB + BT + WIFi :: D3S XENARC 6000k Active bending headlights

  6. #5
    New Identity
    Back in an AWD....Oh the grip!
    Dangerous Dave's Avatar
    Join Date
    Dec 2006
    Location
    West Midlands
    Posts
    8,921
    Thanks
    2,491
    Thanked 2,582 Times in 2,051 Posts
    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.
    2004 Sapphire Black S60 D5 - The new daily hack.

  7. #6
    Member
    This user has no status

    Join Date
    Sep 2005
    Posts
    46
    Thanks
    0
    Thanked 4 Times in 4 Posts
    ended up going to main dealer.they removed the relay and re-programmed it to a new keyfob.

  8. #7
    New Identity
    Back in an AWD....Oh the grip!
    Dangerous Dave's Avatar
    Join Date
    Dec 2006
    Location
    West Midlands
    Posts
    8,921
    Thanks
    2,491
    Thanked 2,582 Times in 2,051 Posts
    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.
    2004 Sapphire Black S60 D5 - The new daily hack.

  9. #8
    Gearbox Killer
    Proving the power of the
    15g....13.4@104.3mph
    MoleT-5R's Avatar
    Join Date
    Jun 2011
    Location
    Mid-Wales
    Posts
    5,624
    Thanks
    2,798
    Thanked 2,673 Times in 1,797 Posts
    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/usr/quik.connection


 

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
This website uses cookies
We use cookies to store session information to facilitate remembering your login information, to allow you to save website preferences, to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.
     
ipv6 ready