Internal error VAR2 area checksum error
â–¶ How to fix
Depending on cause, reprogram settings or if software error is suspected, check for software update if there is a known solution to the problem causing the checksum error
What you'll see
No driver-visible symptom recorded.
System reaction
Data such as auxiliary heater settings will be lost.
Diagnostic depth
Detection
Application will calculate and compare checksums
Possible cause
1) Power loss during write to memory. 2) Internal failure 3) Incorrect handling of battery master switch.