How to replace remote battery in a 2017 Toyota Corolla
Can you replace a car key battery yourself?
Thankfully, in most cases replacing a car key battery doesn't require any specialist skill and can be done quickly and cheaply at home. Car key batteries are round and flat, and shaped like a coin. Before buying a new battery, it's worth checking that you're getting the right one. This will require opening the fob.
How to replace remote battery in a 2017 Toyota Corolla