Hand Control Unit ECU - Internal electronic failure
â–¶ How to fix
Replace HCU.
What you'll see
No driver-visible symptom recorded.
System reaction
HCU internal error and LED error does not cause functional restrictions. The rest of the failures cause HCU not to be used, manual functions are not available. Red warning lamp.
Diagnostic depth
Detection
Internal error detected by HCU itself, or erroneous signals sent by HCU.
Possible cause
Damage of the HCU.