V50 Alarm Battery Type

coupi · Aug 6th, 2015, 15:57

Recently bought a V50 2.0D, with some known hesitation when starting - already cleaned out the EGR (I plan on doing the inlet soon too), and then read up on the alarm siren battery draining the main battery when it's on its way out. I have removed the fuse for the alarm, which has made it start a lot better now, but I'm wanting to replace the battery to get the alarm working again - does anybody know what battery I need? I've only managed to find battery types for other models, but not the S40/V50.

100K+ · Aug 6th, 2015, 19:54

Not a regular viewer of this section but know there is LOTS of info on the V70 2000-2007 V70 section.
Think battery is 7.2V made up of 3 or 4 cells. Many have replaced Volvo battery with house door chimes variety, either in the alarm or in a more accessible area of the bonnet.

Cheers

Bob

XcOM · Aug 7th, 2015, 17:38

On the V50 the battery is part of the siren and it isn't serviceable, you either need to replace the siren with a new one, or crack it open, replace the battery and seal it back up, bad design for servicing but good for security.

coupi · Aug 11th, 2015, 11:53

I read up a bit on people doing it on the V70, so my plan was to follow suit and cut the alarm open, replace the battery and reseal it.

Forgive me, as I'm new to Volvos and have only had my V50 for a fortnight or so!

Will the alarm siren be the same as other Volvo models?

oyvolvo · Nov 12th, 2016, 01:40

Quote:

Originally Posted by coupi

I read up a bit on people doing it on the V70, so my plan was to follow suit and cut the alarm open, replace the battery and reseal it.

Forgive me, as I'm new to Volvos and have only had my V50 for a fortnight or so!

Will the alarm siren be the same as other Volvo models?

if alarm is still a problem the s40 one can be replaced with one from allbatteries :-

NiMH industrial battery 4/V250H PL 071402 4.8v 250mAh - pack(s)
price about £10 inc delivery

if you need to alter case to fit I will be posting up a walk through soon

Sirshocking · Jul 16th, 2018, 15:01

Trying to fix my Alarm system warning with a new battery. I cannot find the location of the siren unit. Looked under the drivers wheel arch and behind the drivers headlight but its not there...anyone here know where it is please?

iainmd · Jul 16th, 2018, 18:22

It is in the plenum chamber under the windscreen on the passenger side.

Aug 6th, 2015, 15:57	#1
coupi Junior Member Last Online: Jun 8th, 2018 11:31 Join Date: Jul 2015 Location: Leicester	V50 Alarm Battery Type Recently bought a V50 2.0D, with some known hesitation when starting - already cleaned out the EGR (I plan on doing the inlet soon too), and then read up on the alarm siren battery draining the main battery when it's on its way out. I have removed the fuse for the alarm, which has made it start a lot better now, but I'm wanting to replace the battery to get the alarm working again - does anybody know what battery I need? I've only managed to find battery types for other models, but not the S40/V50.

Aug 7th, 2015, 17:38	#3
XcOM Senior Member Last Online: Today 16:57 Join Date: Feb 2015 Location: Mansfield	On the V50 the battery is part of the siren and it isn't serviceable, you either need to replace the siren with a new one, or crack it open, replace the battery and seal it back up, bad design for servicing but good for security. __________________

Jul 16th, 2018, 15:01	#6
Sirshocking New Member Last Online: Aug 1st, 2018 13:10 Join Date: Feb 2009 Location: Southampton	V50 2.0D Alarm location? Trying to fix my Alarm system warning with a new battery. I cannot find the location of the siren unit. Looked under the drivers wheel arch and behind the drivers headlight but its not there...anyone here know where it is please?

Jul 16th, 2018, 18:22	#7
iainmd Member Last Online: Yesterday 12:13 Join Date: Nov 2004 Location: Fife View Photos By: iainmd	It is in the plenum chamber under the windscreen on the passenger side. __________________ Present: 2009 Volvo V50 1.6D DRIVe SE Past: 2004 Volvo S40 T5 SE

Aug 6th, 2015, 19:54	#2
100K+ Premier Member Last Online: Today 16:36 Join Date: Aug 2008 Location: Newcastle	Not a regular viewer of this section but know there is LOTS of info on the V70 2000-2007 V70 section. Think battery is 7.2V made up of 3 or 4 cells. Many have replaced Volvo battery with house door chimes variety, either in the alarm or in a more accessible area of the bonnet. Cheers Bob

Aug 11th, 2015, 11:53	#4
coupi Junior Member Last Online: Jun 8th, 2018 11:31 Join Date: Jul 2015 Location: Leicester	I read up a bit on people doing it on the V70, so my plan was to follow suit and cut the alarm open, replace the battery and reseal it. Forgive me, as I'm new to Volvos and have only had my V50 for a fortnight or so! Will the alarm siren be the same as other Volvo models?

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