This should restart the software from scratch. If a single reset does not work, try removing the fuse for the head unit power for a minute to do a full power cycle reset. Check for any updates available and update the touchscreen driver/firmware to the latest versions from the manufacturer. It's easier if you've got an Android head unit. Even if the screen is completely unresponsive, it's possible to perform the task using a USB keyboard. A hard factory reset will solve any software-related problem and fix the calibration as well. So, this should help with car stereo touch screen repair. How to Fix? Thankfully, getting rid of a blown or worn fuse is easy as you only have to replace the damaged fuse. For this, first, refer to your owner's manual to locate the fuse box. It's typically located in the storage compartment that you'll find below the steering wheel. u4AbZ.