Audi A3 key battery
Every Audi A3 remote key we cover, 2003–2026, takes one CR2032.
8Y
2020–2026- Smart keyCR2032
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.
8Y
2020–2026- Smart keyCR2032
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.
8V
2013–20208P
2003–2012- Flip remoteCR2032
For locksmiths · 8Y
- KeysSmart key
- Tools confirmed13
- Transponder chipSubscribers
- Programming procedureSubscribers
Questions
Audi A3 key battery questions
8Y (2020–2026): CR2032 in the smart key. 8Y (2020–2026): CR2032 in the smart key. 8V (2013–2020): CR2032 in the flip remote and smart key. 8P (2003–2012): CR2032 in the flip remote.