The MobileNavigator.exe file is the primary executable for GPS software in many non-brand specific or legacy automotive head units. A "hot" error usually manifests as:

Tips for Using Mobile Navigation Apps

Step 2: Clear Cache Aggressively

Part 4: Top 3 "Hot" Mobile Navigators (Legal Alternatives)

Hardware Scan:

Use a computer to run a disk check on your SD card to repair any bad sectors. 4. How to Prevent Overheating