Disco 2 Td5 alarm problems

Hi guys
I did do a search but nothing came up, anyway son's disco td5's alarm started playing up at work yesterday sometimes with all doors locked the alarm will go off and sometimes with all doors unlocked the alarm will go off but it will drive without the alarm going off, any idea's please

cornish rattler said:

Hi guys
I did do a search but nothing came up, anyway son's disco td5's alarm started playing up at work yesterday sometimes with all doors locked the alarm will go off and sometimes with all doors unlocked the alarm will go off but it will drive without the alarm going off, any idea's please

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Try locking with the key in the drivers door lock and see what happens, this will isolate the interior ultrasonic movement detector, which are known to go over sensitive so faulty.
As for alarm sounding without being set then the is a fault, so diagnostics are required,

discool said:

Try locking with the key in the drivers door lock and see what happens, this will isolate the interior ultrasonic movement detector, which are known to go over sensitive so faulty.
As for alarm sounding without being set then the is a fault, so diagnostics are required,

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Ok thanks discool i will tell him tonight when i get home from work

cornish rattler said:

Ok thanks discool i will tell him tonight when i get home from work

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Something thats just come to mind re the alarm sounding with the doors unlocked… is it an genuine alarm condition or as the sounder had a battery backup there could be an intermittent loss of the 12v ‘hold off’ supply therefore the sounder would sound, normally the battery would have failed years ago if its the factory fitted sounder, if so its back to square one on this one.

If it is any consolation, I have had a similar issue on my TD5, so now I unlock it with the fob but have to lock it with the key. cos if I lock it with the fob, the alarm goes off a few seconds later.
I have been doing this for about a year now.

He was hoping to have a look at it today but it has been working ok today, seems to think it was a guy at the local hand car wash place ( he didn't tell me about ) jet washed the gap between both o/s doors that caused it to cause the problem

I had the alarm problem a few minutes after locking, totally random. I just disconnected the interior movement sensors, never got around to looking any closer.