After 1 to 2 years of use, your toyota key fob will emit an alarm when the engine shuts down, as the standard battery life is 1 to 2.

Change toyota car key battery. There's a little metal button right above the key part of your key fob. Replacing the toyota smart key battery: Turn the key in the ignition.

Press that button, and pull out the key. On the remote key, press the lock. Remove the key cover with a flathead screwdriver or a key.

Take the battery cover off. You can find these batteries at any. Check your owner’s manual to confirm the battery type.

Most toyota keys need a cr 2032 3v battery, which you can find at an electronics store or online. In the key fobs, replace the batteries. Fit a small screwdriver or some other flat object into the little slot.

Press the release button on the side of the key fob and pull on the handle to remove the mechanical key. Look at the front of your keyless toyota remote you will see a small indentation in the plastic. If your keyless remote fob is shaped and looks just like this (it can have a few more buttons) here's an easy diy how to video with step by step battery rep.

How to change toyota car key battery? How to change the remote key battery for a toyota step 1. Usually, toyota keys have cr20323v batteries, but check your car’s manual to make sure.