Volvo Guard II system playing up

Volvophile · Apr 23rd, 2019, 22:34

Recently the Guard II remote system on my 1997 940 has begun to malfunction. The main remote that I used no longer works and I have tried new batteries. The spare fob however does work, although it is intermittent and requires a few attempts. It has come to the stage where I therefore can no longer trust the system and am now using the key to lock the car.

Has anyone else come across this issue?

loki_the_glt · Apr 24th, 2019, 08:27

Yes, in a word.

If you look behind the trim panel on the pasenger footwell side there's an orange relay. This controls the Volvoguard system; unplug it, give its contacts a clean with switch cleaner and re-install it. This USUALLY fixes the problem, although given the age of the cars, there may be a dry solder joint inside the box.

Once re-installed, try to resynch the fob(s) as per the handbook: ignition on and off 5 times in quick succession then press either of the two buttons and check that the alarm LED flashes.

jpliddy · Apr 24th, 2019, 19:02

hi i think key fobs guard 11 are still available not like mine volvo guard 1 which are extinct now

Volvophile · Apr 24th, 2019, 20:26

I took that orange box out and sprayed electrical cleaner on the contacts. I popped it back in and no joy unfortunately. I think maybe the solder joints need looking at. What is worse, I tried the key fob and it locked the car and now I cannot get it back in. The car is completely immobilised.....

I am hoping this won't mean a costly trip to the main dealer.

loki_the_glt · Apr 24th, 2019, 21:04

PM me - there's a workaround available.

TonyS9 · Apr 25th, 2019, 01:57

The alarms just don't last aswell as the car. You can fit a afternmarket one to the same wires or just unplug it and bypass the starter motor immobiliser. You will still have the chip key immobiliser (linked to the fuel ECU so fairly secure).

loki_the_glt · Apr 25th, 2019, 08:58

PM sent.

Volvophile · Apr 25th, 2019, 13:57

Quote:

Originally Posted by TonyS9

The alarms just don't last aswell as the car. You can fit a afternmarket one to the same wires or just unplug it and bypass the starter motor immobiliser. You will still have the chip key immobiliser (linked to the fuel ECU so fairly secure).

Can you fit a replacement orange box with matching key fobs?

loki_the_glt · Apr 25th, 2019, 14:15

I think you can; I've got one that came off a breaker and fitted it into the Exxon Valdez. You'll need to "slave" the existing fobs to it, just as you would normaly.

Apr 23rd, 2019, 22:34	#1
Volvophile Premier Member Last Online: Yesterday 23:06 Join Date: Mar 2007 Location: Dublin	Volvo Guard II system playing up Recently the Guard II remote system on my 1997 940 has begun to malfunction. The main remote that I used no longer works and I have tried new batteries. The spare fob however does work, although it is intermittent and requires a few attempts. It has come to the stage where I therefore can no longer trust the system and am now using the key to lock the car. Has anyone else come across this issue?

Apr 24th, 2019, 08:27	#2
loki_the_glt Torquemeister Last Online: Yesterday 16:05 Join Date: Dec 2004 Location: Asgard, Cheshire	Yes, in a word. If you look behind the trim panel on the pasenger footwell side there's an orange relay. This controls the Volvoguard system; unplug it, give its contacts a clean with switch cleaner and re-install it. This USUALLY fixes the problem, although given the age of the cars, there may be a dry solder joint inside the box. Once re-installed, try to resynch the fob(s) as per the handbook: ignition on and off 5 times in quick succession then press either of the two buttons and check that the alarm LED flashes. __________________ loki_the_glt - Skipper of the Exxon Valdez, driver of Sweden's finest sporting saloon - and pining for another Slant-4.

Apr 24th, 2019, 21:04	#5
loki_the_glt Torquemeister Last Online: Yesterday 16:05 Join Date: Dec 2004 Location: Asgard, Cheshire	PM me - there's a workaround available. __________________ loki_the_glt - Skipper of the Exxon Valdez, driver of Sweden's finest sporting saloon - and pining for another Slant-4.

Apr 25th, 2019, 08:58	#7
loki_the_glt Torquemeister Last Online: Yesterday 16:05 Join Date: Dec 2004 Location: Asgard, Cheshire	PM sent. __________________ loki_the_glt - Skipper of the Exxon Valdez, driver of Sweden's finest sporting saloon - and pining for another Slant-4.

Apr 25th, 2019, 14:15	#9
loki_the_glt Torquemeister Last Online: Yesterday 16:05 Join Date: Dec 2004 Location: Asgard, Cheshire	I think you can; I've got one that came off a breaker and fitted it into the Exxon Valdez. You'll need to "slave" the existing fobs to it, just as you would normaly. __________________ loki_the_glt - Skipper of the Exxon Valdez, driver of Sweden's finest sporting saloon - and pining for another Slant-4.

Apr 24th, 2019, 19:02	#3
jpliddy VOC Member Last Online: Feb 15th, 2024 17:04 Join Date: Dec 2006 Location: stoke on trent	hi i think key fobs guard 11 are still available not like mine volvo guard 1 which are extinct now

Apr 24th, 2019, 20:26	#4
Volvophile Premier Member Last Online: Yesterday 23:06 Join Date: Mar 2007 Location: Dublin	I took that orange box out and sprayed electrical cleaner on the contacts. I popped it back in and no joy unfortunately. I think maybe the solder joints need looking at. What is worse, I tried the key fob and it locked the car and now I cannot get it back in. The car is completely immobilised..... I am hoping this won't mean a costly trip to the main dealer.

Apr 25th, 2019, 01:57	#6
TonyS9 Premier Member Last Online: Apr 9th, 2024 21:44 Join Date: Jul 2009 Location: Holywood	The alarms just don't last aswell as the car. You can fit a afternmarket one to the same wires or just unplug it and bypass the starter motor immobiliser. You will still have the chip key immobiliser (linked to the fuel ECU so fairly secure).

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