Toyota Corolla key battery
E210 (12th gen)
2018–2024How to change a flip remote battery
- Fold the blade in. On many flip keys the remote section unclips from the blade section, so look for a small slot along the seam.
- Wrap the tip of a small flat screwdriver in tape or a cloth, put it in the slot and twist gently to part the case. Keep it off the circuit board and contacts.
- Note which way up the old cell sits before you lift it out. It varies by key, so don't assume + is up.
- Fit a new CR1620 the same way up, holding it by the edges. Leave any grease on the contacts.
- Clip the case back together and test the buttons at the car. Most keys work straight away with no reprogramming.
- Keep new and old cells away from children. A swallowed button battery can cause serious injury within two hours.
How to change a smart key battery
- Slide the release catch and pull out the emergency key blade.
- Wrap the tip of a small flat screwdriver in tape or a cloth, put it in the slot the blade leaves and twist gently to part the case. Keep it off the circuit board and contacts.
- Note which way up the old cell sits before you lift it out. It varies by key, so don't assume + is up.
- Fit a new CR2032 the same way up, holding it by the edges. Leave any grease on the contacts.
- Clip the case back together and test the buttons at the car. Most keys work straight away with no reprogramming.
- Keep new and old cells away from children. A swallowed button battery can cause serious injury within two hours.
E140 (10th gen)
2007–2013- TransponderNo battery
A key with no buttons has no battery. It starts the car using a chip that needs no power.
- Fixed remoteCR2016
- Flip remoteCR2032
- Smart keyCR1632
- Smart keyCR2032
How to change a fixed remote battery
- Find the slot or screw on the edge or back of the remote. Undo the screw if there is one.
- Wrap the tip of a small flat screwdriver in tape or a cloth, put it in the slot and twist gently to open the case. Keep it off the circuit board and contacts.
- Note which way up the old cell sits before you lift it out. It varies by key, so don't assume + is up.
- Fit a new CR2016 the same way up, holding it by the edges. Leave any grease on the contacts.
- Clip the case back together and test the buttons at the car. Most keys work straight away with no reprogramming.
- Keep new and old cells away from children. A swallowed button battery can cause serious injury within two hours.
How to change a flip remote battery
- Fold the blade in. On many flip keys the remote section unclips from the blade section, so look for a small slot along the seam.
- Wrap the tip of a small flat screwdriver in tape or a cloth, put it in the slot and twist gently to part the case. Keep it off the circuit board and contacts.
- Note which way up the old cell sits before you lift it out. It varies by key, so don't assume + is up.
- Fit a new CR2032 the same way up, holding it by the edges. Leave any grease on the contacts.
- Clip the case back together and test the buttons at the car. Most keys work straight away with no reprogramming.
- Keep new and old cells away from children. A swallowed button battery can cause serious injury within two hours.
How to change a smart key battery
- Slide the release catch and pull out the emergency key blade.
- Wrap the tip of a small flat screwdriver in tape or a cloth, put it in the slot the blade leaves and twist gently to part the case. Keep it off the circuit board and contacts.
- Note which way up the old cell sits before you lift it out. It varies by key, so don't assume + is up.
- Fit a new CR1632 the same way up, holding it by the edges. Leave any grease on the contacts.
- Clip the case back together and test the buttons at the car. Most keys work straight away with no reprogramming.
- Keep new and old cells away from children. A swallowed button battery can cause serious injury within two hours.
North American models
12th gen (E210)
2020–2024- Smart keyNot confirmed
We haven't confirmed this one. Open the key and read the code on the old cell, then buy the same.
11th gen (E170)
2014–2019E140
2009–2013- Remote head keyCR2016
E120/E130 (9th gen US)
2003–2008- TransponderNo battery
A key with no buttons has no battery. It starts the car using a chip that needs no power.
For locksmiths · E210
- KeysFlip remote · Smart key
- Tools confirmed9
- Transponder chipSubscribers
- Programming procedureSubscribers
Questions
Toyota Corolla key battery questions
E210 (2018–2024): CR1620 in the flip remote; CR2032 in the smart key. E140 (2007–2013): CR2016 in the fixed remote; CR2032 in the flip remote and smart key; CR1632 in the smart key.