How to Replace the Battery in a Sylphy Remote Key?

[DiMalachi]

Below are the steps to replace the battery in a Sylphy remote key: 1. Remove the mechanical key and locate the hole used to detach the mechanical cover. 2. Insert the mechanical key into the hole and gently pry open the key cover by hand. 3. Remove the old battery, install the new battery, reattach the key cover, and finally reinsert the mechanical key. Here's how the car key works: 1. The key emits a weak radio wave, which is received by the car's antenna. The electronic control unit then identifies the signal code, and the system's actuator (motor or electromagnetic coil) performs the locking/unlocking action. 2. The basic components of a car key consist mainly of a transmitter and a receiver.