A car door that won't close properly is not only a critical safety issue, but also an invitation for thieves to pilfer your car.

Use these tips to troubleshoot a door that won’t close properly, identify the faulty components, and learn how to fix them.

Relatedly, if a guest does leave the door open, is it OK to (briefly) go into the room when they are not there? Maybe I’ve felt too free to enter, and this is why the guest closes the door.