How to Cancel the Alarm with a Spare Key?
1 Answers
Car spare keys deactivate the alarm because the vehicle was originally locked using a remote key, and when opened with a mechanical key—whether it's the primary or spare key—the car's computer system defaults to interpreting this as a forced entry, triggering the alarm. To stop the alarm, quickly power on the vehicle after opening the door, as the spare key contains an engine decoding chip that allows the car to be started at any time. Here is some relevant information: 1. The car's spare key is intended for emergency use. Under normal circumstances, it is advisable not to leave it inside the car, as this can easily attract thieves, posing significant risks to personal safety and vehicle security. It is also not recommended to carry the spare key with you out of fear of being unable to unlock the car, as this could lead to accidental loss. However, if you are traveling long distances, you should carry the spare key with you to avoid major inconveniences in case the primary key is lost or becomes unusable. 2. A car alarm is a security device installed in the vehicle. If someone hits, impacts, or moves the car, the sensor sends a signal to the controller, indicating the intensity of the vibration. The system can then trigger a warning sound or a full alarm based on the vibration intensity, deterring thieves and alerting the owner. It is a multifunctional product that, in addition to its anti-theft alarm function, can also remotely open the trunk, lock/unlock doors, control windows, and even start the engine.
