need help

Is the key in the door or the ignition?

What is going off? the security alarm? Immobilisers are quiet as far as I know.

Alan

G'day Len

Sometimes the key will "drop" its code. It has a transponder in it which interacts with the ignition switch. If the codes are not talking to each other, the computer will assume someone is trying to steel it.
You will need to tow it to a dealer and have the key re-programmed

Donks1

thanks Alan its when the key is in the ignition and turned on that the horn goes off

Hi. Don't know if it helps, but my wife has an Applause with remote locking. If you open the doors with the key, not the remote, then the car goes ballistic when you put the key in the ingition and turn it on (wont start; flashing lights, the works). All is fine if you use the remote to open the doors. Also, remember to check the remote batteries from time to time.
Chris (SA)

thanks Chris but no remote key on this car engine will start but horn keeps going of its brain lol wonder if it will hurt if i disconnect the horn ??

thanks for your help guys i took out the horn relay so she can get to work the car is under warranty so they are giving her a car while they fix the problem
......................... len

Try disconecting the battery for a few minutes- apparantly than can fix varios electronic glitches

My son had a similar problem. had been at the mine site for 14 days, and had keys with him. Car no longer recognized his key.

He had to reset the system or power it down or something like that.

Had a guy leave his Ford ute here overnight. The next morning it refused to start...same problem. Key wasn't talking to puter...last saw the ute on a trayback going to the Ford workshop. He was lucky it didn't happen elsewhere.