In a nutshell??

[hueandcry71]

What does the small button do on the key fob??

Only just realised there are two buttons on it and have just looed through the manual but nothing makes sense after a long day in the office.Please dont post a link or tell me to search other posts cos my head hurts.

[boobles]

I was told it was incase you have the roof of.... Could
be wrong though.

[fleetelise]

Big button = alarm/immobiliser on/off.

Big button, followed by little button = alarm/immobiliser on, but with motion/noise detection switched off i.e you car is alarmed and immobiised but won't be set off easily with the roof off

[Hollow Legs]

The little button is also a panic alarm type thing iirc

set the alarm then go back a bit later and press the little button alarm should go off (at least it did on mine when the wife did that!)

i also think that it *may* set the alarm off if the engine is running, again the panic type thing, although not tried it so could be completly wrong.

[Jonblue]

It's for programming it, I believe.