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700/900 Series General Forum for the Volvo 740, 760, 780, 940, 960 & S/V90 cars |
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1998 940 2.3 LPT Automatic Immobiliser ProblemViews : 9539 Replies : 32Users Viewing This Thread : |
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Mar 15th, 2007, 14:43 | #1 |
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1998 940 2.3 LPT Automatic Immobiliser Problem
Guess what?
I cannot disarm my immobiliser. Now my lovely Volvo might as well be a garden feature. It was working fine until Monday morning when upon trying the key fob, I discovered that the damn thing won't come off. The central locking still works on the key but all other functions are...er...immobilised! I've contacted an auto-electrician but (quite rightly)he's asking for a £60 callout fee before any other expenses are taken into account. Is there any way to disarm the immobiliser on this model? I've tried disconnecting the battery; reprogramming the key fobs and various angles of blippery with the key all to no avail. There is no alarm but there must be a workaround for this. Please email me privately if you are at all concerned about this sort of thing in a public forum. Please help. I desperately need the car and there is far too much month left at the end of the money to pay a mechanic! |
Mar 15th, 2007, 19:27 | #2 |
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immoob prob
Hi, i had a very similar problem on my Megane about 3 months ago,the car stayed immobilised although the central locking worked okay.After ringing Renault and getting a price tag of 200 quid +for the unit, ( because they told me what had happened was a common fault as the car gets older,) +callout charge, +fitting charge and finally programmeing key to said unit, i was quoted 450 all in ish. Needless to say i gave em the one finger salute and pulled the unit out of the roof console myself, after looking at what constituted of about 7.50's worth of parts, i just generally cleaned all the dirt, spiders and any other crud out from there using a cotton bud soaked in switch cleaner, very very very softly cleaned up the teminals on the pcb, sprayed up inside the terminal blocks and pulled them on & off a few times, and then just reassembled the unit.Got my keys out, pressed the button and hey ho away we go, and it's never been a prblem since.
You may have a similar set up on your pride & joy, if so you've got nothing to lose, very often a wiggle test can put things right temporarily. |
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Mar 15th, 2007, 19:58 | #3 |
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Great response larwood,
Trouble is, I don't know where the unit is in the 940. Can anyone point me in the right direction? I'll certainly give this methd a go if I know where it is and what it looks like! Cheers |
Mar 15th, 2007, 20:01 | #4 |
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I have the same year 940 and I have had the same problem. With mine if I lock it with the remote it has to be unlocked with the remote, not the key. The manual says that to use the key only, let the alarm sound (30 seconds). When it stops, start the car within 5 seconds. The cure(?)for me was to remove the batteries in the fob, replace if dead, bend the small contact at the side so it presses more heavily on the batteries.
If you hold the fob up to your ear, you should hear one beep when you press unlock. If you hear more, the batteries need replacing.
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Ian |
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Mar 15th, 2007, 20:57 | #5 |
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Mmm..that sounds interesting.
Thanks for that dvbydt. Things are becoming less expensive hopefully! |
Jul 21st, 2011, 23:30 | #6 |
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1998 940 2.3 LPT Automatic Immobiliser Problem Reply to Thr
Hi everyone I have same problem cant start vehicle tried to reprogram fob without any luck now car is blocking driveway does any body know if i could bypass this imobiliser i would be very gratful for all advice many thanks to all Robhertz:
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Jul 22nd, 2011, 00:25 | #7 | |
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Quote:
It describes how to bypass the alarm. It is for the 960 but the alarm is the same so the bypass should work. You will need to remove the glovebox to gain access to the alarm module.
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Gavin 1997 945 CD (B230FK) [RIP: 1991 945 Turbo (B230FT) 1992 945 SE turbo (B200FT)] |
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Aug 9th, 2014, 20:15 | #8 |
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Last Online: Aug 12th, 2014 11:18
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1997 Volvo 940 Celebration Immobiliser problems
hi all
i am new to the forum and i need help. i have a 1997 volvo 940 celebration which i have had since new, done 140.000 miles with no problems to speak of. came out this morning pressed the fob to unlock the car and nothing, checked the batteries in the for all ok tried the spare fob and still nothing. in desperation i unlocked the car just on the key which started the flashers going, tried to stop them on the fob, nothing! put key in ignition all lights up but wont start. I have ckecked all connections fuses etc all appear to be fine, the flasher came on every time i opened the door after manually locking it or put the key in the ignition and tried to start it set them off but no start. My question is does anyone know the problem, i dont need to have an immobiliser and could do away with it if thats the problem, can it be bypassed. the sticker on the windows says volvoguard. any help would be usefull as i cannot use the car at the moment. thank you |
Aug 9th, 2014, 20:40 | #9 |
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Yes, the immobiliser can be disabled by removing the alarm module and bridging two terminals with a jumper wire.
If you remove the glovebox the alarm module will be fisible on the left hand side. See the applicable attached pdf for the correct bridging connections. The central locking and ignition will still work with this modification.
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Gavin 1997 945 CD (B230FK) [RIP: 1991 945 Turbo (B230FT) 1992 945 SE turbo (B200FT)] Last edited by gpl1968; Aug 9th, 2014 at 20:42. |
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