Replace Mini Key Fob Batteries

If your key fob comes with batteries that need to be replaced, it's an affordable and simple fix. Be aware that it might require reprogramming or activated.

This will ensure that your vehicle's Driver Profile is connected to the new key fob as well as all its settings including mirror position as well as seating position.

Battery

Modern key fobs are more convenient and useful than flip keys or car remote. However, this technology doesn't come without a price: the battery inside your key fob will eventually run out. If you let it sit until it's completely gone and you are left with no means to unlock your car. To avoid this, replace the battery in your car key fob whenever you begin to notice signs of weakening power.

You can utilize a key fob's LED light to check the battery's voltage. If the key fob's buttons do not activate after pressing them then the battery is dead or close to dying. Batteries used in key fobs are typically small, coin-shaped batteries, such as CR2025 or the CR2032. They can be purchased at home improvement stores, and some auto parts stores. Make sure you purchase the right type of battery as different fobs need specific cell thicknesses.

You can also use a voltmeter measure the voltage of a fob's battery. A voltmeter should read about 3 Volts or higher for a good battery. If the battery in your fob is less than 2.8 Volts it should be replaced. The process of replacing the battery on your fob is relatively easy and can be done at home with the proper tools. You can find instructions in your owner's manual and many Youtube videos on the topic. Be careful not to break any of the plastic tabs which hold the components together.