Like anything powered by a battery, a car key fob can die—often at the worst time. Here’s how to change the battery in your key fob quickly and safely.

Learning how to change the battery in a Toyota key fob isn't difficult. Whether you have a new or old model, we'll show you how to do it step by step.

Audi key fobs have varied slightly between different models over the years, but the process to replace batteries is relatively similar and simple for each one.