My Vauxhall Vivaro is having trouble starting despite a new battery, what should I do?

I recently replaced my Vauxhall Vivaro's battery, but now it won't start. I've checked the connections and they seem fine. What could be causing this issue and how can I fix it?

It sounds like there may be an issue with your starter motor or alternator. It's best to have a mechanic check these components to see if they need to be repaired or replaced.

You may also want to check your spark plugs and fuel filter. These can also cause starting issues if they are dirty or worn out. It's a good idea to have them checked and replaced if needed.

Another common issue with Vauxhall Vivaro is a faulty immobilizer. If this is the case, you will need to have your vehicle towed to a dealership to have the immobilizer reprogrammed or replaced.