Open up the hood locate the battery and with a wrench remove the negative terminal.
Car alarm battery change.
Car alarms rely on the electronic component of the vehicle and disconnecting the battery should both silence the siren and reset your alarm.
Most procedures will vary from car to car but you can try removing and replacing the fob battery.
Many modern car alarms are sophisticated components that tie into the vehicle s ecu main computer as well as the ignition system.
If you replace the battery the alarm system will be activated and you will not be able to start the car again until the alarm has been disabled.
On newer vehicles the key fob or alarm remote may need to be reset with a code reader scanner.
There is a simple fix for this that will allow you to turn the alarm off and start your car again without using the keyless remote.
Step by step insert your key and.
We ll show you how to safely open up a key fob and swap out the batteries.
Use a code reader.
How to reset your car alarm in the event of flat battery or your remote car key fail or after replacing new battery.
This video can be used f.