VC70 alarm going off for no obvious reason

[RM955I]

Is it by any chance the infamous dead and corroding internal battery problem that afflicted P2 V70 cars? Or did they change the design on P3?

[pagan8c]

I had a similar thing on a XC70 I had and it turned out to be a micro switch on the bonnet lock which kept malfunctioning. Took it to the dealer I bought it from and they replaced it and never a problem after that. They said it was not an isolated incident so assume it has been known. It showed up on the diagnostics they did. apparently it needs the bonnet lock being taken appart to get at the switch.

[Paul Bearer]

Originally Posted by RM955I

Is it by any chance the infamous dead and corroding internal battery problem that afflicted P2 V70 cars? Or did they change the design on P3?

Thanks for that, quite possible, I have read up on that problem, there are some useful videos on you tube on it, not investigated to find out as yet, I have changed it to reduced alarm and so far nothing untowards but will see what happens over the next few days

Originally Posted by pagan8c

I had a similar thing on a XC70 I had and it turned out to be a micro switch on the bonnet lock which kept malfunctioning.

I have set the alarm to reduced setting and will see what happens, it may be a vehicle going by setting it off or as you suggest one or other switch/sensors

If it doesn't trigger over the next few days I may conclude its other vehicles going by, its a narrow road so may be, if it happens in the reduced setting I will have to look deeper

Thanks for the reply

[Phil Croxley]

Interesting to read this as my alarm has started to go off for no reason, even when parked in a quiet place. I now have to set it with the sensors off using the button on the dash which says reduced guard.
Any other suggestions as to what I should look for?

It's a 2008 V70 D5 SE with only 40k. Thanks

[Paul Bearer]

That is exactly what I am doing but its a pain when you forget and have to do it again

But so far no more alarms going off

[Phil Croxley]

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It'll be nice to get to the bottom of it. There's an auto electrician who does some work where my workshop is a couple of times a week, if he comes up with anything I'll let you know. I should see him next week.

[Paul Bearer]

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That would be very useful

[Phil Croxley]

Originally Posted by Paul Bearer

That would be very useful

Mine is even going off now with the sensors disabled so I'm not sure what that tells me!

[Paul Bearer]

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That does not sound good does it

Not to mention extremely aggravating !

It sounds like the unit, which is what I thought my problem was at first

When I looked into it, its apparent its a common problem, there are some you tube videos on it, one suggested about £80 for a unit, another changed the batteries at I think about £20

A pain in the proverbial whichever

[JRL]

Take the siren unit out and change the battery. If it still sounds after that then you know it is something else but the battery should be your first port of call.