After over 20 years of reliable service, the factory keyless entry system on this first generation Toyota Avalon began acting up. The power door locks all worked as well as the power trunk so we were able to install a Compustar alarm and keyless entry module on this car. This includes installing an engine lock relay which further increases security to the vehicle. We also installed a loud siren to further deter thieves. The alarm system is triggered by opening of the doors while locked or by the shock sensor.