Also make sure all the battery contacts are corrosion and dust free. Make sure the battery is firmly placed and does not move around when you shake the remote. If the clips don’t have any tension, it can cause contact issues and the remote may not receive any power. The battery inside the key fob of Yaris has metal retaining clips that hold the battery in position and completes the circuit. It will rule out any other problem with the first key, for example, water damage. Tip: You can try to lock/unlock your Yaris with its spare key. This is assuming the new battery you installed is healthy and its use by date is many years away. How long does the key fob battery last?ĭepending on how often you use the key fob or remote control of your Yaris, the battery should last between two and four years. Use by date is usually mentioned on the back of the packaging. If you still can’t get the key fob to work after verifying that the battery is healthy, your key fob issues may not be due to bad battery. Try purchasing the battery from a store where stock moves fast. Therefore after replacement it may not work, or may not last that long. When purchasing a new battery for the key fob of your Yaris, keep in mind that the battery may be sitting on the shelf for a long time. Key fob not working after replacing the battery
