dont have a scooby (literally)

googled it and came up with this site for all the answers sigma related

now the sad bit its a TX1 taxi

problem is one of the keyfobs has ceased to work and ive read various posts with regard to a "keypad" only problem is if this thing has 1 then where the **** is it? what exactly am i looking for? And can anyone help

 

Thats what it looks like IIRC.

 

The TX1 used an M30 as standard to provide Category 2 immobilisation and remote CDL between 1997 and 2001.
The system was also upgradeable to a full cat 1 with the addition of siren, bonnet switch, ultrasonic sensors etc.
The keypad was standard even with the basic system and should be located in a recess behind the driver's sunvisor.
If this recess is empty then you have a later vehicle with the immobiliser CDL control etc integrated into the vehicles main control unit, so you would need an LTI dealer to help you.
If its a very early vehicle (without the recess) then the system could be an SG30. Keys for these are not programmable using the keypad and you will need a Sigma dealer or LTI dealer.

SS