Toyota Key Fob is manufactured in such a way that it is possible to replace the dead battery. The battery is very inexpensive and can be found almost anywhere in a car. There are several reasons why the battery may be dead. These reasons include overuse, excessive use of air conditioning, improper alternator repair, battery acid spillage, and improper charge cycle.
The Toyota Key Fobs comes with a manual that includes detailed instructions for replacing the battery. Toyota Key Fobs also comes with a battery charger that is designed to charge the battery when the key is in the ignition and then it is ready to be plugged in again. If you do not replace the battery with the charger and if you continue to use the key, eventually the battery will die. To replace the dead battery with the charger, you need to disconnect the key from the ignition. If the battery charger is used before plugging the key back into the ignition the battery will not be charged.
There are two methods to replace the battery of the Toyota Key Fobs. The first method is to manually unplug the key from the electrical system. This is not recommended unless the car has been thoroughly examined. Next the key should be inserted into the vehicle and turned clockwise until the starter motor begins to turn and the dashboard lights illuminate. The dashboard lights should stay lit at all times. Turn the key in and allow it to run until the battery is fully drained. When the battery reaches about one percent remaining, remove the key.
A second method is to get a battery charger and plug in your new battery. Make sure the car is fully drained and put your vehicle in park. Then insert the charging cord into the charger. The light on the dashboard should be steady as the battery will slowly begin to charge.
Another option is to take the key off the car and plug in the charging cord into a car charger. Make sure the car is fully drained before reattaching the key to the car.
If you want to be sure that the battery in your Toyota Key Fobs is charging correctly, you can find a professional technician who will charge your battery for you. This is a much better option than to try to charge it yourself.