I made a post on Jan 16th about my Superb 1.4TSI not starting. You can review it here, where I concluded that the security function in my "daily driver" key fob had failed in some way but the security in my almost completely unused "spare" key fob was good to go.

 

So, now my car starts instantly with what was my spare key that only used to come out for services and MOT's, but won't start with the key that I have used regularly for the last 10 years.

 

My question is how do I / can I reset the  security function of my original fob? Is this something I can DIY, or does it need specialist services? I've checked the Owner Manual and there are references for linking the fob to the central locking if it doesn't work after a new battery, but nothing about resetting security. In the attached image of the key fob, there's a small pin - the sort you'd find on an electronic gizmo. Is this a reset, and if so how do I get it to talk to the car again?

 

Apologies in advance; I obscured some of the numbers because I wasn't sure if they are security-related.

 

Cheers!

Anybody?

 

Please 😶

The immobiliser chip is passive, read by a reader coil embedded in the ignition switch. Users cannot reprogram this. The only user reprogramming is to code the key to the car so that remote locking works.

 

It requires specialist equipment to reprogram the immobiliser chip.

 

If yours has stopped working then either the immobiler chip is broken or missing  (Its housed in the key in a tiny glass tube) or the car has somehow lost the immobiliser code of that particular key.

 

 

Edited 5 February, 20242 yr by xman

57 minutes ago, xman said:

The immobiliser chip is passive, read by a reader coil embedded in the ignition switch. Users cannot reprogram this. The only user reprogramming is to code the key to the car so that remote locking works.

 

It requires specialist equipment to reprogram the immobiliser chip.

 

If yours has stopped working then either the immobiler chip is broken or missing  (Its housed in the key in a tiny glass tube) or the car has somehow lost the immobiliser code of that particular key.

 

 

 

Many thanks for this information. Off to the Skoda dealer it is, then. Hopefully, they have the specialist kit.

 

The key fob in question has been in my possession forever, so the car's "only" lost the code for that key that won't start it. Thankfully, the other key's working.

 

Tnaks again! 🙂