ambient message failure (COO)
▶ How to fix
Check CAN bus and transmitting system.
What you'll see
No driver-visible symptom recorded.
System reaction
No direct reaction. Only in case of double fault with an already faulty temp. sensor the „cold mode“ can not be activated anymore.
Diagnostic depth
Detection
Earliest possible detection 10s after reset. After more than 5s of missing message or invalid or not available data.
Possible cause
Loss of CAN connection, fault on CAN bus or transmitting system faulty.