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850 / S70 & V70 '96-'99 / C70 '97-'05 General Forum for the 850 and P80-platform 70-series models |
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C70 Alarm Goes off randomly!!Views : 2293 Replies : 7Users Viewing This Thread : |
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Feb 4th, 2007, 13:08 | #1 |
Master Member
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C70 Alarm Goes off randomly!!
Hello peeps, my c70 alarm has been going off randomly, i have put this down to being when its cold, i had a quick chat with my dealer and they said that the most common problem is because of coins in coin holders and therefore nothing metal should be put in this area; as it sets off the proximity sensor located under the coin holder.
What a stupid place to put a prox sensor, or the coin holder if they interfere with one another. Something to do with metal contracting under cold conditions and the prx sensor noticing the movement and therefore setting off the sensor. However taking into consideration the above points, i still have a random alarm going off every now and then and its beginning to get annoying. A trip last night to the car to turn off the alarm at approx 3am, and the night before. So i am just using the key at present for locking and uinlocking. Any ideas??? If i cant cure it its a trip down to the dealers for a clifford !
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Feb 4th, 2007, 13:19 | #2 |
MaDMaN
Last Online: Nov 26th, 2022 18:47
Join Date: Sep 2006
Location: Red Lodge
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my s70 did it once.... did my effin head in! it was a moth in the car... everytime a car drove past the moth started flying towards the lights setting the alarm off.... by the time id got outside the moth had settled down..... untill the next
you can temporary disconnect sensors in car on s&v models... dunno about yours tho |
Feb 4th, 2007, 13:32 | #3 |
V70R owner & Carp Angler
Last Online: Mar 2nd, 2010 19:41
Join Date: Oct 2006
Location: crawley down
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Had this before and it turned out to be the air vents, air source was switched to outside and the wind was causing the alarm to go off, not saying this is your problem but worth a look.
John |
Feb 4th, 2007, 14:29 | #4 |
Master Member
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cheers guys no moth and have tried the vents closed any other ideas?
/
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Feb 4th, 2007, 21:21 | #5 |
C70 T5
Last Online: Mar 23rd, 2022 21:00
Join Date: Sep 2006
Location: Midlands
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I have this problem on my C70 as well and to be honest I just feel sorry for the neighbours. Worst thing is when it goes off I can't get to it as I can't mumble through all the keys quick enough, or I am in the bath or fast asleep lol.
Mine happened daily for about a month last year. I thought it may have been a small fly that got in so just left the windows open one afternoon whilst giving the inside a good clean and vaccum. After that it was fine. It then happened twice last week, but this was only when trucks went past causing the whole street to shake as they fly over the speed bumps. I will check my coin holders and also ensure the air vents are set correctly but all seems ok at the minute. |
Feb 15th, 2009, 19:59 | #6 |
New Member
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I had the same problem on my C70 2000'.
It was after reading this forum that I've realized that I have put a coin over the ones that are on the slotted holes in the coin holder. That extra coin was oscillating when there were big trucks or quads passing nearby, and causing the alarm to trip the siren off. It was very good to find this thread, and some others with similar clues about the coins. Thanks for your help! |
Feb 17th, 2009, 22:10 | #7 |
Junior Member
Last Online: Jan 12th, 2024 15:40
Join Date: Sep 2006
Location: London
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This happened on our C70. The cause was a mobile phone headset in the centre console tray.
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2002 C70 2.4 GT (LPT) Auto Coupe - 2002 V70 2.4 SE (170) Auto (now written off) -1999 V70 XC |
Feb 18th, 2009, 16:23 | #8 |
TRADER
Last Online: Sep 16th, 2016 14:55
Join Date: May 2006
Location: FRF Volvo, Swansea (Volvo Main Dealer)
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if you get the car plugged in at a local dealership the alarm activation codes will be recorded and can be retrieved. door locks and boot locks and possibly faulty siren can all lead to false alarms, locks especially. coins in the coin box do not trigger alarm, its when metal objects are left in the cubby hold behind the coin holder there is a problem.
You can try removing the bulb from your boot interior lamp, as a temporary fix, as what can happen is the boot lock unit thinks the boot is open and puts the light on (and sets off alarm). you will never know this of course as its lighting up a closed boot space... Simon
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