Vehicle & Technical > Discovery

imobiliser

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piper5:
my mates td5 disco 52 plate failed to start toninght imobiliser seemed to stay on he reckons horn lights etc going off , operating the key fob wouldn't cure it neither did the spare key, 1 hr later the rac man turned up pressed the key and hey presto no problem , any ideas, i suggested batterys in the fobs first.

ben_haynes:
yes My mums 300 did this

open it up and check the Solder joints and replace the batteries (not forgeting to follow the replacement guide as some times you have to drain the keyfob before fiting the new batteries i.e. pressing the buttons for 10 seconds each)

piper5:
the plot thickens we changed the batteries alarm works no problem for 2 days then does it again, over ride manually with the key procedure and no problems it starts, just as we are ready to book it in to main stealer another mate with another td5 parks in the same place and it wont start , push it 10 yrds and it starts , so we must be getting signals from something that are giving problems ( read that on this forum somwhere) problem is the site is half a mile from anything on a smallholding, no phone masts so what else can cause this  and what frequency does the alarm work on to look for interference

skip:
Could be a poorly sheilded underground HV cable, giving out electro magnetic/static interference.

Disco Sev:
The last post I read with a similar problem turned out to be a nearby faulty door bell transmitter.

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