All Things Mk5 > How to Guides / Troubleshooting

Alarm issue please help

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MateyGuv:
Inner ignition barrel has a micro switch to tell if the key in inserted or not. Mine was knackered and giving wrong signals to the ECU. Looks like my ignition barrel was "seeing" the key placed in and out when the alarm was set making it think an unauthorised key was in the ignition and setting alarm off. Do you here clicking from steering colum when driving?
If scan says battery disconnected it may be the alarms internal battery back up that's failed - about £85 for a new siren and battery from TPS

jhook661:
Well I dissconected the battery a few weeks back fitting my boost gauge ? It's wired how it's doing it after I replaced my door lock module :(

MateyGuv:
It may be coincidence that it's started happening now. I should have asked earlier - do you hear clicking noises from your steering colum when driving or do the doors unlock and then relock themselves when driving?

jhook661:
No problems like that no clicking just goes off whenever it feels every now and then a bit strange to me

Paultc90:
Was the door module you bought brand new? Sounds exactly like the problem I had, so would say it's a dodgy door lock module.

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