How to troubleshoot the auto start-stop system on my Vauxhall Insignia?

I have recently noticed that the auto start-stop system on my Vauxhall Insignia is not working properly. It used to work fine but now it seems to turn off and on randomly. What could be causing this issue and how can I fix it?

One possible reason for this issue could be a weak or faulty battery. Start by checking the battery levels and if needed, replace the battery with a new one. Also, make sure that all the connections are secure and free from corrosion.

Another possible cause could be a problem with the alternator. A failing alternator can lead to issues with the auto start-stop system. Have a mechanic check the alternator's output and replace if necessary.

You can also try resetting the auto start-stop system by pressing and holding the button for a few seconds. If the issue persists, it could be a problem with the system's sensors, in which case you will need to take your car to a Vauxhall dealership for further diagnosis.

I had a similar issue with my Vauxhall Insignia and it turned out to be a faulty starter motor. If none of the above solutions work, have a mechanic inspect the starter motor and replace it if needed.