Coding out missing key

[boundy]

Hi guys wonder if you could help with a problem I have. I have lost a key to my 2003 HDI 110 SE estate and I think someone may of picked it up as last night a neighbour caught some kids by my car and they ran off but when I went out the drivers door was open. The key in question was lost 2 months ago and there is every possibility that the car was left unlocked and the two events are unrelated but now I'm paranoid that they may have my key, nothing else in the car was touched apart from the complete ashtray was taken as it as full of change.

I'm trying to weigh up my options of what to do,

Replace the complete lock set, BSI, ect.

Code out the missing key so at least it can't start the car ( if possible)

Fit a very cheap stand alone alarm that will go off if a door is opened.


Can anyone give me some advice?

[steve_earwig]

Hi there

Oh blimey, that's a pain Not sure about changing ecus, although it might be cheaper than buying new stuff from Pug. I think the central locking can be stepped on (somehow) because they go out of sink. The transponder is another question, although once everything else is changed they'd have to break into the car and force the steering lock before it would be any use to them.

Or... get another key cut, transponder and remote programmed to the car and then sell it. Providing it goes somewhere else they'd have to be really lucky to find it again. Or, if you have the spare, sell it as is - "sorry, I lost the key." Preferably to someone who lives a long way away...

[GingerMagic]

There is so much work changing the ECU,transponder,keys,barrels,ignition,BSI, clocks etc, all of which you will need to do it right, you may as well get a fresh key done and buy a manual deterrent like a crook-lock.

Maybe just change the door locks so someone would need to break in before taking it, which is also a cheapish deterrent, along with a crook-lock.

Just leave nothing of value in the car for the time being....

[boundy]

The little shites haven't been back and I found my empty ashtray up the road. Still a bit paranoid though and not sure what to do, don't really want to plough any money into this car even though it has just passed it's second mot in my ownership for under £100

[Doggy]

I don't think you can disable the key without changing at least some of the hardware. I base this on the fact that I mislaid the spare key to my old 406, then lost synch with the remaining one when I took the battery off withoit following the correct procedure.

I subsequently re-synched the one key with PP2000. Several years later, after selling the car, I found the original spare key and passed it on to the new owner. It worked staright away.

This makes me think the two original keys 'look' identical to the car, so you can't prevent one of them from working.

[boundy]

It'sa shame, iI used to have a vectra and it was possible with opcom to code out missing get keys, the previous owner got a new key from vauxhall and when checking the system over I could see the ecu had key 1 and key3 stored as number 2 was coded out by the dealer

[FarmerPug]

You could cut one of the wires going to the immobiliser antenna, and fit a key switch to it, so that the key switch must be turned on for the immobiliser antenna to work. It would add another step to the startup and turn off procedure for the car but would at least make it harder for them to steal the car.