My cars interior won't heat up, unless I'm driving

Hello, it sounds like it's taking a decent amount of time for the engine to reach operating temperature. This could be due to an engine thermostat that is sticking a bit, extending the duration of the warm up process. However, this is a guess, and hands on testing should be performed to measure engine coolant temperature from the start of start up and continuing during engine warm up. Alternatively, the inside of the vehicle temperature blend controls in your climate control system could be malfunctioning. Check engine temperature first, but that's something to keep in the back of your mind too. www.repairpal.com/repair-shops

Make certain coolant level is ‘FULL’ !