How to solve VW T5 side door problem?

To solve a VW T5 side door problem, start by checking the door's locking mechanism and wiring for any damage or disconnection. Inspect the door latch and hinges for proper alignment and functionality. If the door won't open or close, try manually operating the latch or using the key fob to reset the locking system. If these steps don't resolve the issue, consider consulting a professional mechanic for further diagnosis and repairs.