alarm goes off at 4am!

mizzoumom01 · Jun 6th, 2012, 21:22

Last night at 4am (about noon in Sweden) the car alarm went off. There was noone near the car, no rain, really quiet. I had heard that when the battery runs low, that this is one way your car lets you know. Besides parking in the garage tonight (don't want to again wake the neighbors) and seeing if it happens again, any other ideas of why the car alarm would sound? I already checked that nothing was slightly open, nothing seems out of the ordinary. If no other ideas, will bring to dealer on Friday to check battery. Seems to start just fine...Open to any and all ideas. Thanks!

mrmeringo · Jun 6th, 2012, 21:27

Hi,
Sometimes they can be set by certain 2 way radios that Taxi drivers use, do you have many cabs driving past your home? I would put it down to the Battery though

bubba1986 · Jun 6th, 2012, 21:40

Is it a ph1 70 car mate ?, as if u leave anything metallic in the tray beside coin holder the alarm goes off

Thanatos · Jun 6th, 2012, 21:42

Lock it with the key as it stops the alarm but have a look for flying incects as I had a moth in mine causing the issue but mo likly battery

JamesV70R · Jun 6th, 2012, 21:42

You say that .. but its never happened to me! I left a set of keys in the ash tray for a month and it didn't go off once!

I'd say its battery.

bubba1986 · Jun 6th, 2012, 21:45

Quote:

Originally Posted by Villan

You say that .. but its never happened to me! I left a set of keys in the ash tray for a month and it didn't go off once!

I'd say its battery.

Well i have had my c70 for 7.5 years and spent the first year or so trying to figure that out.

Was only at a meeting from another forum back in 2006 someone pointed it out, never happened since

mizzoumom01 · Jun 6th, 2012, 21:45

No moths, no taxi's, and nothing in the trays at all-will check the battery out on friday. Thank you to all who helped!

cookie · Jun 7th, 2012, 07:10

coins etc in ash tray, can cause it, but is a bit random/freak, micro switches in front doors have a tendancy to play up (can be fixed with a couple of wraps of insulation tape around the tab that activates the microswitch in the lock assy

do you have occasion problems where you have to open and reclose doors to get interior light to go off, or at night footwell lights on?

not heard of battery problems affecting alarm on P1's (more of a P2 problem)- especially if car still starts fine.

Andy Northface · Jun 7th, 2012, 08:59

The only trouble I've ever had with car alarms is when the battery was getting a bit old or the alternator was playing up.

Lukasz Klimczewski · Jun 11th, 2012, 01:03

I had the same issue. It's one of door locks. Search for faulty door lock...

Don't try to clean it it will come back fter a while. Safe your self time nd buy new one ( second hand from ebay around 20-30£)

Once micro switch inside door lock get dirty it might gives false signal about opened door to ecu and light inside car turns on! While doors are phisicly locked - alarm turns on. Light inside car turns on itself, you need to slam your door to turn it off.Another symptom of bad door lock is lack of blink when you close your car using fob.

Before you decide to replace one of doorlocks, disconnect small interior light under glovebox and turn off interior light using switch.

Jun 6th, 2012, 21:22	#1
mizzoumom01 New Member Last Online: Sep 9th, 2013 03:50 Join Date: Jun 2012 Location: saint louis	alarm goes off at 4am! Last night at 4am (about noon in Sweden) the car alarm went off. There was noone near the car, no rain, really quiet. I had heard that when the battery runs low, that this is one way your car lets you know. Besides parking in the garage tonight (don't want to again wake the neighbors) and seeing if it happens again, any other ideas of why the car alarm would sound? I already checked that nothing was slightly open, nothing seems out of the ordinary. If no other ideas, will bring to dealer on Friday to check battery. Seems to start just fine...Open to any and all ideas. Thanks!

Jun 6th, 2012, 21:42	#4
Thanatos VOC Member Last Online: Sep 11th, 2019 14:36 Join Date: Aug 2008 Location: Blackpool	Lock it with the key as it stops the alarm but have a look for flying incects as I had a moth in mine causing the issue but mo likly battery __________________ Classicswede quote " I knew I had not done the bolts up." http://www.volvoforums.org.uk/showthread.php?t=159255

Jun 6th, 2012, 21:45	#7
mizzoumom01 New Member Last Online: Sep 9th, 2013 03:50 Join Date: Jun 2012 Location: saint louis	this narrows it down! No moths, no taxi's, and nothing in the trays at all-will check the battery out on friday. Thank you to all who helped!

Jun 11th, 2012, 01:03	#10
Lukasz Klimczewski Junior Member Last Online: Sep 3rd, 2012 13:54 Join Date: Apr 2012 Location: Oxford	I had the same issue. It's one of door locks. Search for faulty door lock... Don't try to clean it it will come back fter a while. Safe your self time nd buy new one ( second hand from ebay around 20-30£) Once micro switch inside door lock get dirty it might gives false signal about opened door to ecu and light inside car turns on! While doors are phisicly locked - alarm turns on. Light inside car turns on itself, you need to slam your door to turn it off.Another symptom of bad door lock is lack of blink when you close your car using fob. Before you decide to replace one of doorlocks, disconnect small interior light under glovebox and turn off interior light using switch. __________________ V70R Laser Blue AWD Last edited by Lukasz Klimczewski; Jun 11th, 2012 at 01:08.

Jun 6th, 2012, 21:27	#2
mrmeringo Tommy Meringo Last Online: Jun 28th, 2020 16:04 Join Date: Mar 2011 Location: Liverpool View Photos By: mrmeringo	Hi, Sometimes they can be set by certain 2 way radios that Taxi drivers use, do you have many cabs driving past your home? I would put it down to the Battery though

Jun 6th, 2012, 21:40	#3
bubba1986 New Member Last Online: Jun 11th, 2012 16:27 Join Date: Jun 2012 Location: Paisley	Is it a ph1 70 car mate ?, as if u leave anything metallic in the tray beside coin holder the alarm goes off

Jun 6th, 2012, 21:42	#5
JamesV70R Forum Support Team Last Online: Apr 26th, 2024 18:05 Join Date: Aug 2009 Location: Watford	You say that .. but its never happened to me! I left a set of keys in the ash tray for a month and it didn't go off once! I'd say its battery.

Jun 7th, 2012, 07:10	#8
cookie Lord B on T5D5.org Last Online: Apr 12th, 2024 19:13 Join Date: Nov 2006 Location: rochester	coins etc in ash tray, can cause it, but is a bit random/freak, micro switches in front doors have a tendancy to play up (can be fixed with a couple of wraps of insulation tape around the tab that activates the microswitch in the lock assy do you have occasion problems where you have to open and reclose doors to get interior light to go off, or at night footwell lights on? not heard of battery problems affecting alarm on P1's (more of a P2 problem)- especially if car still starts fine.

Jun 7th, 2012, 08:59	#9
Andy Northface Where's that 18mm socket? Last Online: Apr 25th, 2016 23:01 Join Date: Sep 2010 Location: Normally in the dog house, Chester-Le-Street	The only trouble I've ever had with car alarms is when the battery was getting a bit old or the alternator was playing up.

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