immobiliser problems
Discussion
A 2002 will have a seperate wee blue fob and a normal old style key? check the wee micro chip hasnt fallen out of the key? Had that with a forester, easy fix was to get a couple plain keys cut and hide the working key near the igniton behind the ingition barrel cover to allow newthe keys to start the car.
It sounds like the key which turns the engine over is not programmed to the car itself. The subaru keys work as follows (I think):
The key has a button, this opens the door and disables the alarm, inside the key is a transponder chip which matches the immobiliser and sends a signal to the ECU for the car to start. if your car has an early Sigma alarm there may be a separate fob (it might be an AC38 key fob) This fob will do the same as the button on the key, unlock the doors and disable the alarm, but the key will still need to have a matched transponder chip to the vehicle in order to start the car.
In essence there are 2 layers of vehicle security, the doors opened / alarm disabled via the key fob (or the key button) which is separate from the transponder chip in the key which is needed to start the car.
There are threads on scoobynet about this, but you could do the following (also suggested by a ph'er ages ago which I found during a google search) take both your keys into a local Timpsons locksmiths , give them the working key (so they can get the frequency of the chip via a machine) and ask them to fit and program a new transponder chip into the one which doesn't work. It usually costs about 50 quid or so if you need a key cutting but as you already have a key it might be less. Worth also picking up a couple of new batteries of ebay while you're at it.
hth and sorry if I've made a mistake but that's pretty much my take on it, happy to be corrected.
The key has a button, this opens the door and disables the alarm, inside the key is a transponder chip which matches the immobiliser and sends a signal to the ECU for the car to start. if your car has an early Sigma alarm there may be a separate fob (it might be an AC38 key fob) This fob will do the same as the button on the key, unlock the doors and disable the alarm, but the key will still need to have a matched transponder chip to the vehicle in order to start the car.
In essence there are 2 layers of vehicle security, the doors opened / alarm disabled via the key fob (or the key button) which is separate from the transponder chip in the key which is needed to start the car.
There are threads on scoobynet about this, but you could do the following (also suggested by a ph'er ages ago which I found during a google search) take both your keys into a local Timpsons locksmiths , give them the working key (so they can get the frequency of the chip via a machine) and ask them to fit and program a new transponder chip into the one which doesn't work. It usually costs about 50 quid or so if you need a key cutting but as you already have a key it might be less. Worth also picking up a couple of new batteries of ebay while you're at it.
hth and sorry if I've made a mistake but that's pretty much my take on it, happy to be corrected.
- Edit my atrocious spelling which is still probably wrong somewhere.
Edited by texaxile on Tuesday 24th January 17:39
Edited by texaxile on Tuesday 24th January 17:39
Edited by texaxile on Tuesday 24th January 17:41
Gassing Station | Subaru | Top of Page | What's New | My Stuff