Volvo guard alarm help please!

[thomasmann]

Thank you everybody for your input, I'll mull over the suggestions. I did suspect that another car's fob had armed the system and got my neighbour to try the most likely suspect with no success. Rumour has it that there's a fuse taped up in the steering column area which can be pulled. Too wet here to investigate!
regards
Tom

[jpliddy]

Originally Posted by thomasmann

Thank you everybody for your input, I'll mull over the suggestions. I did suspect that another car's fob had armed the system and got my neighbour to try the most likely suspect with no success. Rumour has it that there's a fuse taped up in the steering column area which can be pulled. Too wet here to investigate!
regards
Tom

hi the alarm fuse is normally either under bonnet near ABS pump that tells us its been fitted in factory .then if its taped up in steering column area above your right knee its been fitted after its left the factory . so i have been told .
do you have the small triangle box at drivers side window pillar with another box just lower down?

[thomasmann]

I don't see a fuse near the ABS box, but there's the triangular unit with LED's and buttons on the driver's windscreen pillar, but nothing below it. When the car is unlocked and a door or bonnet is opened a little light flashes on the triangular box when all is operating normally. I've heard that the unit is taped near the back of the light switch in the dashboard area: this may have a fuse in it.
Thanks
Tom

[TonyS9]

They can go a bit nuts in their old age, mine did something similar.

Just rip it out and bypass the starter wire breakpoint, you can google the contacts to bridge or I can try and dig it out for you on PM.

[Forrest]

I don’t think anyone has posted this one yet which I find quite useful when working on the Volvo Guard 1 alarm.

[thomasmann]

Thanks to all for your help! I got the car to my usual expert and after a bit of poking around he went up inside the drivers side dashboard and removed a fuse from the alarm module there. All seems to be working OK as is the central locking: I hope this is the solution to the problem.
Thanks to you all
Tom

[capt jack]

Fingers crossed you've fixed it! But isn't daft at just how easy it can be to circumvent "security" on a car?

It's like locking wheel bolts to "protect" the alloys - for a tenner in Halfords I bought a locking wheel nut removal kit. I used it to remove knackered locking bolts once, and then bought some plain bolts off Ebay!

Jack

[Clan]

Originally Posted by thomasmann

Volvo 940 1994 Automatic
Volvoguard Alarm 1

I’ve never used the alarm system and its siren is disconnected.
I’ve always used the driver’s door key to unlock and unlock the central locking
all the time I’ve had the car, without trouble until now.

Parked car on my drive unlocked.
Returned to car and found it locked.
On unlocking and opening the door the hazard flashers flash continuously
and the starter is immobilised.

Disconnected battery and left car overnight.
On reconnecting the battery the hazards flash and the starter is immobilised.
Any ideas, anybody, please?

Is it the type with the small black fob with grey buttons ?

if the alarm is in the ON position there is only one way to disarm it , that is with a volvo special tool designed just for that , you have to take the alarm control relay out ( the one with the green plug in the top ) and take it to the dealer for them to turn OFF ..

[Silver940]

Sounds dumb, my Wentworth did this and turns out there's a fuse feeding the immobilizer, pull that and it started like normal just without an imobilzer, it seems rather pointless of a system of it's breached pulling a fuse! But try it

[Laird Scooby]

Originally Posted by Silver940

Sounds dumb, my Wentworth did this and turns out there's a fuse feeding the immobilizer, pull that and it started like normal just without an imobilzer, it seems rather pointless of a system of it's breached pulling a fuse! But try it

Originally Posted by thomasmann

Thanks to all for your help! I got the car to my usual expert and after a bit of poking around he went up inside the drivers side dashboard and removed a fuse from the alarm module there. All seems to be working OK as is the central locking: I hope this is the solution to the problem.
Thanks to you all
Tom

He already did this and got mobile again. You're right though, it's an incredibly stupid way to design an alarm/immobiliser.

Fair enough, they made it fail-safe in as much as if the fuses to the alarm/immobiliser fail, you can drive, you just don't have an alarm or immobiliser. However by doing that they also made it easy to steal. All it needs is the knowledge of where to find those fuses and then hot-wire it, break the steering lock and the thieves are away.