How to replace the key battery in a Vauxhall Astra, Corsa or Vectra (2004 to 2010 Models)

Step One in changing your Vauxhall Key Battery

It’s really important to buy a good CR 2032 key battery. Many problems we see are caused by cheap batteries. It seems mad to us that that anyone would drive a £15,000 car Vauxhall Astra H, with a £130 key, but put a 99p battery inside it! So spend a few pounds and get a good one. We recommend Maxell, Panasonic, Duracell and Sony.

Step Two

Flip out the the key blade as you normally do.

Step Three

The battery compartment cover is a piece of plastic, designed to just pull off, so put you thumb on it and pull it, you can’t break anything!

Step Four

As we show in the video, the important thing is to remove the battery and then put the new one in the correct way up. There are only two ways. You must be able to read the writing on the battery once it is fitted in your Vauxhall Astra key.

Step Five

Refit the battery cover. If the remote is in good condition, then it should just work, there is no way to reprogramme it.

If the remote doesn’t work after you fit the battery, then it’s possible there’s something else wrong.

Other reasons your Vauxhall remote may not work

There are two other reasons that your remote has stopped working.

1. Underneath the plastic button that you press is an electronic circuit board. On this board are small switches and it’s common for these to come loose and eventually fall off. If you press the button but can’t feel a ‘click’ then this may be the problem.
2. The key has split open at some point and the electronics have been damaged, or the battery terminals are missing.