Spare Key Doesnt Open Door

[matticus]

Hey all,

Today I tried to unlock my drivers door with my spare key to find that it wont open the door. I can unlock the boot and start the car with the key but it will not the door.

Funny thing is, my normal key (has OEM keyless entry) will open the door and start the car but will not open the boot.

Both keys look the same (in terms of cut) however my normal key is more worn.

Can anyone advise on why this might be and what I could do to get both keys to open all locks?

Also, I was talking to a mate about alarms today and he said not to put an "upgrade" alarm on my car as simply unlocking the doors (either by remote, by turnign the key or flickign the door switch) will disengage the alarm/immobilizer. Something to do with the solenoid sending out the pulse. Can anyone shed some light on this?

Note: I have the OEM keyless entry system

Thanks!

[mad082]

if you put an aftermarket alarm on then you will need to unlock the car with the remotes that come with it rather than the OEM ones, as most alarms also have an immobiliser and pressing the button disarms it as well as unlocking the car.

[mad082]

oh and as for the key, it would purely come down to worn locks, slight differences in the key, etc.

[matticus]

if you put an aftermarket alarm on then you will need to unlock the car with the remotes that come with it rather than the OEM ones, as most alarms also have an immobiliser and pressing the button disarms it as well as unlocking the car.

Thanks mate,

when i was talking about the "upgrade" alarm, from what ive seen there are some systems which use the OEM keyless entry to run the alarm/immobiliser. He was saying that you cant hook our cars up to these as simply unlocking the car in any way will disable the alarm.

Oh well, im just going to get a full alarm system...

[.:: GimpS-R34 ::.]

Isn't that the point of unlocking the car.. No point unlocking the car and still have the alarm enabled.. Talk to a proper alarm shop specialist about your options and whether you can program your OEM button to be used as your alarm/unlock instead of the aftermarket one..