VXOC Astra-J/GTC

just been running kids around tonight and when daughter got in car and I went to start car the yellow light on the dash with the car and lock through it flashed and car wouldn't start...removed key and tried again and started no problem...I know this is the immobilizer but is it doing this because the battery in the key needs changing or is it something completely different??

I had this happen a couple of times or it will start then cut out.

ive not got to the bottom of it and no fault codes are stored, I changed the battery in September at 2yr service it did it once since then.

think I will swap battery and see as I cam across one in draw other day

if its not that it could be the chip just not being picked up

thanks guys

try the other key for a bit and see if it goes away

will do