What Causes the Malfunction After Replacing the Car Key Battery?

[Louise]

Replacing the car key battery and experiencing malfunction is typically due to coding failure. You can insert the car key into the ignition and turn it repeatedly—without starting the car—about four to five times. Then, press and hold any button on the key to recode and reactivate it. Avoid storing car keys near mobile phones or bank cards for extended periods, as this can cause electronic interference. Keep them in a dry place and away from water to prevent electronic faults. A remote key allows you to unlock and lock the car from a distance without inserting the key into the lock, offering the convenience of easy operation regardless of the time of day or visibility of the lock.