V50 alarm problem

smokedmackerel · Jul 14th, 2018, 08:31

Just under 2 years ago we had a problem with the alarm going off all the time so we had to take to main dealer and they fitted a new siren and alarm system and far as we know it's own built in battery.
And now we have the same situation ,lock the car with the fob ( i know I've accidentally pressed the panic button and have he alarm goes off) and within minutes the alarm goes off ,I tried sitting in the car and locking it with the fob and it was ok for5 mins or so but locking from outside doesn't make any difference ,it cost a load of money to have it fixed before .
We have now locked it by using the key and pressing the locks in the rest of the car but the boot won't lock and we have the car backed up to a very close tree
Anyone got an idea how to resolve this please

FunkyMelon · Jul 14th, 2018, 11:16

Have you replaced the battery on the fob? Flat battery can cause confusion if the signal doesn't quite get there.

smokedmackerel · Jul 16th, 2018, 08:06

Thanks but the fob works fine and locks and unlocks the car ,it's when I walked away from the and after 5 mins or so it went off ,very infuriating

iainmd · Jul 16th, 2018, 18:28

If it has recently had a new siren unit fitted then this shouldn't be occurring. Try vacuuming the sensors in the roof panel in case an unwanted arachnid has sought refuge there. Also, if you have a sunroof make sure the drains run freely and that no water is leaking out in the direction of the sensors.

Beyond that it's VIDA hookup time to see what fault codes are logged.

Jul 14th, 2018, 08:31	#1
smokedmackerel smokedmackerel Last Online: Feb 8th, 2024 17:21 Join Date: Apr 2006 Location: wallington surrey	V50 alarm problem Just under 2 years ago we had a problem with the alarm going off all the time so we had to take to main dealer and they fitted a new siren and alarm system and far as we know it's own built in battery. And now we have the same situation ,lock the car with the fob ( i know I've accidentally pressed the panic button and have he alarm goes off) and within minutes the alarm goes off ,I tried sitting in the car and locking it with the fob and it was ok for5 mins or so but locking from outside doesn't make any difference ,it cost a load of money to have it fixed before . We have now locked it by using the key and pressing the locks in the rest of the car but the boot won't lock and we have the car backed up to a very close tree Anyone got an idea how to resolve this please

Jul 14th, 2018, 11:16	#2
FunkyMelon Master Member Last Online: Mar 14th, 2024 16:24 Join Date: Apr 2017 Location: South	Have you replaced the battery on the fob? Flat battery can cause confusion if the signal doesn't quite get there. __________________ 2006 Volvo S40 T5 SE Sport

Jul 16th, 2018, 18:28	#4
iainmd Member Last Online: Today 17:13 Join Date: Nov 2004 Location: Fife View Photos By: iainmd	If it has recently had a new siren unit fitted then this shouldn't be occurring. Try vacuuming the sensors in the roof panel in case an unwanted arachnid has sought refuge there. Also, if you have a sunroof make sure the drains run freely and that no water is leaking out in the direction of the sensors. Beyond that it's VIDA hookup time to see what fault codes are logged. __________________ Present: 2009 Volvo V50 1.6D DRIVe SE Past: 2004 Volvo S40 T5 SE

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Jul 16th, 2018, 08:06	#3
smokedmackerel smokedmackerel Last Online: Feb 8th, 2024 17:21 Join Date: Apr 2006 Location: wallington surrey	Thanks but the fob works fine and locks and unlocks the car ,it's when I walked away from the and after 5 mins or so it went off ,very infuriating

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