Can I disable the boot unlock/lock facility on the key fob?

There is not official procedure for disabling just the trunk lock button on the fob. The only way to do this would be physically disassembling the key fob and removing the switch mechanism in the circuit board. I don't recommend this at all but it's technically possible if you know a lot about circuitry. If it keeps happening in your purse, maybe try putting the fob in a small padded pouch so the buttons don't contact anything. Or a seperate compartment in the purse. Alex