How exactly do you swap out the battery on your key fob? In this piece, we’ll walk you through how to change the key fob battery for a specific vehicle - the Toyota Prius. Read on to learn more.

There’s a Prius key fob backdoor — a way to start your car even if the fob battery is dead.

Starting with a Prius key, the first step was to disassemble the already broken key fob and separate out the PCB from the case and battery holder.

Toyota Prius 2004 - 2009 Before we start, it is essential to know which generation of Toyota Prius you own. If you own a Prius built between 2004-2009, the key fob used is different from the one that ...