Not sure which Mongoose alarm is fitted to your car ?
Select your model of remote control from the menu opposite. The details also include instructions for coding the remote control to the alarm module. These details are also in the alarms owners manual.
Complete replacement remote controls, remote cases, transponder tags, or batteries for all Mongoose security systems.
Batteries are also available from supermarkets and electronic stores. (Please note, some models are now more than 25 years old and are no longer available)