Unknown ECU unit
â–¶ How to fix
Renew the unit that has a different version of the software from the rest of the vehicle. Tip: If an ECU unit is retrofitted, check it. Check the ECU unit that has most recently been renewed as a spare part.
What you'll see
No driver-visible symptom recorded.
System reaction
No system-reaction text recorded.
Diagnostic depth
Detection
An unknown ECU unit has been detected.
Possible cause
The fault may be due to: An ECU unit having a newer version of the software than the rest of the vehicle. The coordinator having an older version of the software than the rest of the vehicle.