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Old 04-06-2003, 04:23 PM
dieseldave dieseldave is offline
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Join Date: Apr 2003
Location: UK
Posts: 15
Steve,- Many thanks for the excellent explanation of the system, armed with the additional knowledge I tried today to re-create the original event but without success, everything works OK, it locks, it unlocks, the alarm works, the motion detector works, if I unlock with the mechanical key the alarm starts to wind up but as soon as I put the key in the ignition the alarm stands down which is all as it should be. Batteries in the key were replaced in February , even so at the time of the event I did blame them until the problem turned into the 'cant stop the alarm nightmare'! The odds of having more than one fault must be very high so I guess that whatever happened (the lock function and the alarm glitch) must be linked in some way even if the systems are seperate. Hopefully it wont re-occur, certainly it is impossible to diagnose when the fault is no longer there.

The only remaining symptom is the red led in the motion sensor/towaway switch which is now permanently lit, nothing in the owners information discribes any situation where this led is lit continuously so I guess something is wrong. I did try disconnecting the vehicle battery for 10 minutes in the hope of creating a re-set but no such luck. If this remains the only problem I can live without being able to switch off the motion sensor or towaway function .

Again thank you for your excellent system explanation,

XP190, yes it is quite interesting, as I understand it the key is a sort of 'passive transponder or resonator' for the EIS security signal, a bit like the anti theft store tags used on expensive items to stop people shoplifting but more elaborate, I Guess Steve could give you a more technical explanation.
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