daddyscoob

Problem with my 03 sti type uk. Neither of the keys will disarm the immobiliser. I have put new batteries in both keys also left the car battery disconnected foe a while and no joy.
The keys will not operate the central locking either. My car is at home and parked in the usual place. We live in the country so interference not an issue.

Trying to find the code for the keypad in the paperwork withe the car but what format is it ? How many numbers etc ?

Any help much appreciated.

Steve001

iTrader: (7)

Car battery flat maybe?

daddyscoob

I checked the battery and it's at 12.6 volts so ok.

Peedee

iTrader: (4)

Think it's usually a four digit number for the keypad mate.

So, it unlocks the car, you get in, turn the ignition on, press the button then......nothing happens, right?

ZANY

Isn't the battery's on the sigma fob on the uk sti's and not the key the key only has the transponder little black chip inside and the alarm etc runs off the blue fobs

Peedee

iTrader: (4)

That's correct.

OP, have you tried changing the battery's on the sigma fob?

daddyscoob

It is the key which works everything. No separate fob. At the moment they will not operate the central locking and will not knock off the immobiliser.

ZANY

Do you have a pad were the coin tray is?? If yes then you need the 4digit code if a replacement battery doesn't cure the immobiliser if you don't have a pad for the a
aLarm then just check to see if you have put the battery's in correct way if all was well previous to you replacing both battery's on the key I have had uk wrx's previously work on the key so nothing extraordinary there hope you Dort it mate it'll be nowt :-)