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S80 '98-'06 / S60 '00-'09 / V70 & XC70 '00-'07 General Forum for the P2-platform S60 / V70 / XC70 / S80 models |
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New battery...... alarm sirenViews : 549 Replies : 7Users Viewing This Thread : |
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Feb 15th, 2024, 00:49 | #1 |
Senior Member
Last Online: Apr 30th, 2024 00:30
Join Date: May 2006
Location: enfield
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New battery...... alarm siren
Hi 2005 V70
Maybe a silly question..... My battery has been on the way out for a while....had to definitely get a new one...got a genuine one....all perfect Now....for a while my alarm siren has been sounding randomly when the car is armed, even with the dog button pressed....so I was having to lock with the key....the siren was new 5 years ago... genuine part.....I changed when I bought the car as i the owner said the alarm was messing around .....and the sunroof didn't work....and if I'm correct some of the power for the roof goes through alarm/same circuit....any new siren fixed the roof Now.....back to today.... battery going flat.... alarm sounding randomly..... I bought a new battery (£120) and was told siren is now a whopping £215....so I didn't get one However.....I've been arming the car with the remote, and so far the alarm hasn't gone off randomly once since fitting new battery.... Related?? I thought sirens had internal batteries that packed up sheet a few years and that was that Any ideas? |
Feb 15th, 2024, 09:26 | #2 |
Lazy Member
Last Online: Yesterday 21:13
Join Date: Mar 2007
Location: HORLEY
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Hi.
Does sound as if the battery was drain being detected and triggering the alarm.
The alarm could be u/s so why not deliberately trigger it ? You`d know for sure if it were good or not then. I think the replacement alarm modules are less likely to suffer from leaky batteries unlike the original . |
Feb 15th, 2024, 09:37 | #3 |
XC70 SE lux D5
Last Online: Jul 28th, 2024 10:55
Join Date: Jan 2011
Location: Mansfield, notts
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Another thing to check if you are getting random alarm triggers are to connections to the alarm loops on the rear side windows,
They are like a press stud so they should be a tight fit , I found some of mine were loose and that was causing intermittent alarm triggers, if you remover them you can carefully adjust the end that's on the wire with some needle nose pliers to make them a better/tighter fit, |
Feb 15th, 2024, 11:09 | #4 |
Senior Member
Last Online: Apr 30th, 2024 00:30
Join Date: May 2006
Location: enfield
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Hi
Thanks for that As it goes the battery that needed to be replaced was a genuine one, but if had it for a while, it used to be in an 850 I had, I took it out and it was sitting in the garage for a couple of years before being reused So, try to deliberately trigger the alarm....give the car a kick??!! |
Feb 15th, 2024, 14:43 | #5 |
Lazy Member
Last Online: Yesterday 21:13
Join Date: Mar 2007
Location: HORLEY
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No! . You can lock the car with a window open , wait for the alarm / immobilizer to set and then put your arm through the open window to trigger the system .
Works if it`s not too windy out . Or , sit in the car , lock a set the system and sit still whilst it sets . When you move it should trigger the system . Either way using the remote fob button. |
Feb 15th, 2024, 21:49 | #6 |
Member
Last Online: Jul 28th, 2024 00:38
Join Date: Dec 2012
Location: West London
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The alarm is linked with the sunroof via the UEM. So if the alarm siren doesn't work, so doesn't your sunroof. The module, I believe is behind the rear view mirror. I have a Topdon, but maybe better with VIDA, you can recalibrate the alarm siren.
This only works if there are no DTC codes present. |
Feb 17th, 2024, 04:00 | #7 |
Senior Member
Last Online: Apr 30th, 2024 00:30
Join Date: May 2006
Location: enfield
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Hi
So working roof means working alarm I've not got to testing it yet, will do that at the weekend, but it's been sitting there for a couple of days as usual, but now armed, and the siren hasn't sounded once It sits there up to a week not being used so the new battery is with the money The old battery was so bad it was even difficult to jump start it Ps, I live next door to a tube station, and a train station and bus stops....so the car sometimes doesn't get much use but even at 20 years old is ULEZ compliant so why change it I even still put Volvo parts on it....and it's only done 194,000!! |
Feb 17th, 2024, 14:28 | #8 | |
Lunatic.
Last Online: Jun 6th, 2024 22:59
Join Date: Dec 2006
Location: staffordshire
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V40 1.9D 2004 620 miles to the tankful. 235000 miles on clock. Now sold, S60 D5 2004. I vape therefore I am. |
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