[JOHNDQ]

I also found this excellent thread posted by harbottle.

It covers the repair of the SCU fitted to an MG TF115, the central locking relay had failed.

Clicky...

Got a problem with my ZS if you think you can do anything with it mate car is immobilized at the moment. Locked it up as normal but next morning had following faults....

1. Key fob will only open boot and lock car.
2. Central locking button in car no longer works at all.
3. Alarm cant be switched off and car immobilized.

Ive checked the fob with a key reader at work all 3 buttons are sending out RF signals do you think there's anything you can do to help unfortunately dont have any codes from the fob for programing etc

 

[JOHNDQ]

Sounds like the central locking relay in the SCU has failed...

But this shouldn't stop the car from starting, what happens when the ignition
is turned to position II?

Nothing mate can turn ignition on but doesn't stop alarm or immobilizer I'm thinking maybe the key reader has failed to?

 

[JOHNDQ]

You should have the two-tone chime with the ignition on, what happens if you press the fob unlock button at that point?

Not a sausage :crying2: No alarm tone tho. Thanks for your time by the way

 

[JOHNDQ]

Thanks mate I had to remove sounder as couldn't stop alarm going off. Will try it see what happens if no like can you test the bcu/fob