What causes the dashboard lights to flicker in a Vauxhall Vivaro?

I've noticed that the dashboard lights in my Vauxhall Vivaro sometimes flicker when I start the engine. What could be causing this and is it something that needs to be fixed immediately?

The most common cause for dashboard lights flickering is a weak battery. Check your battery's connections and make sure they are clean and tight. If the problem persists, it may be time to replace the battery.

It could also be a problem with the alternator or voltage regulator. If the lights continue to flicker even after checking the battery, it's best to take it to a mechanic for further diagnosis and repair.

In some cases, it could be a faulty instrument cluster or a wiring issue. These types of problems are best left to a professional mechanic to fix.