DTC B15E7: Harddisk Reading/Writing Malfunction(Low Temperature); DTC B15E8: Harddisk Reading/Writing Malfunction(High Temperature): Description

These DTCs are stored when the temperature is higher or lower than the operation range of the hard disc built into the display and navigation module display, and hard disc read/write errors occur more than a specified number of times.

HINT: 

The hard disc may not operate normally when the temperature is -20°C (-4°F) or lower, or 65°C (149°F) or higher.