i have been having problems with unlocking my car i thought it was just the battery need replaced so i got a new one form the dealer this morning. locked the car to go into my house and later on when i went out the key would not unlock the car and whn i put the key in the door to unlock it he alarm goes off. this is ok when im going for a dive but when i have to start the car to get the alarm off just so i can grab something from the glovebox its getting annoying.
Try bending the battery contacts on the PCB in the transmitter so they make tighter contact with the battery. Don’t over do it and break them off!
worked a treat thanks very much 
been very annoying for ages. your the eastern regeon admin so see ou at the next meet in kings lynn i cant make it this wed im at home on leave in swansea