Electrics: - V40 alarm issue

Knappers1966 · Dec 24th, 2020, 18:18

Hi all, we have a 2003 V40 and for some reason today the alarm goes off as soon as the drivers door is unlocked and opened and we don’t seem to be able to switch it off. Any clues ?

magnuz · Dec 24th, 2020, 20:29

Are you unlocking the car by turning the key in the lock, or by using the fob ?
Normally.... if you lock the car with the fob, you have to unlock with the fob, or the alarm will sound, but if you lock it with the key, you can unlock with the key without the alarm sounding,
Also.. if the alarm does sound, it will usually stop when you put the key in the ignition, & turn it.
That's what happens on mine .

Knappers1966 · Dec 24th, 2020, 22:01

We’re unlocking it with the fob but turning the ignition doesn’t stop it. Eventually it will stop but then starts again as soon as the door is unlocked again. The car will start and drive okay with the alarm sounding....

Richie sussex · Mar 1st, 2024, 16:33

Did you get this fixed? Mine has started doing the same today. Can’t switch off the alarm so I’ve disconnected the battery for some peace!!
Regards

Joseph Martin · Mar 1st, 2024, 22:43

This is so strange....my 2003 V40 has started doing the same thing today too.

Its usually down to the bonnet sensor. Spray it with WD40 and press it gently in and out.

Otherwise, disarm the alarm by pressing the ultrasonic sensor disable button on the dashboard.

Clan · Mar 1st, 2024, 23:05

Quote:

Originally Posted by Richie sussex

Did you get this fixed? Mine has started doing the same today. Can’t switch off the alarm so I’ve disconnected the battery for some peace!!
Regards

thats odd the alarm has an internal battery to keep it going...

Dec 24th, 2020, 18:18	#1
Knappers1966 New Member Last Online: Dec 27th, 2020 09:16 Join Date: Dec 2020 Location: Somerton	V40 alarm issue Hi all, we have a 2003 V40 and for some reason today the alarm goes off as soon as the drivers door is unlocked and opened and we don’t seem to be able to switch it off. Any clues ?

Mar 1st, 2024, 16:33	#4
Richie sussex Richie Last Online: Mar 8th, 2024 12:03 Join Date: May 2020 Location: Handcross	V40 alarm Did you get this fixed? Mine has started doing the same today. Can’t switch off the alarm so I’ve disconnected the battery for some peace!! Regards

Mar 1st, 2024, 22:43	#5
Joseph Martin Master Member Last Online: Yesterday 16:56 Join Date: Sep 2011 Location: Rothesay, Isle of Bute	This is so strange....my 2003 V40 has started doing the same thing today too. Its usually down to the bonnet sensor. Spray it with WD40 and press it gently in and out. Otherwise, disarm the alarm by pressing the ultrasonic sensor disable button on the dashboard. __________________ CURRENT 340, 360 GLE, 440 GLT, 440 TD, 460 CD (x2), 850 T-5 (x3), 850 TDI, V40 Sport Lux, V40 1.8 S, C70 GT 2.0T PREVIOUS S40 1.6 (x2); 440 1.6i

Dec 24th, 2020, 20:29	#2
magnuz Ancient Last Online: Apr 23rd, 2024 20:31 Join Date: May 2012 Location: chesterfield	Are you unlocking the car by turning the key in the lock, or by using the fob ? Normally.... if you lock the car with the fob, you have to unlock with the fob, or the alarm will sound, but if you lock it with the key, you can unlock with the key without the alarm sounding, Also.. if the alarm does sound, it will usually stop when you put the key in the ignition, & turn it. That's what happens on mine .

Dec 24th, 2020, 22:01	#3
Knappers1966 New Member Last Online: Dec 27th, 2020 09:16 Join Date: Dec 2020 Location: Somerton	We’re unlocking it with the fob but turning the ignition doesn’t stop it. Eventually it will stop but then starts again as soon as the door is unlocked again. The car will start and drive okay with the alarm sounding....

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