Loss of persistent IMMO data
â–¶ How to fix
• With IMMO-LAS tool: - Program immiblizer codes - Lock DAS and EMS to each other
What you'll see
No driver-visible symptom recorded.
System reaction
• Impossible to start engine • Immobilizer active shown in the ICL
Diagnostic depth
Detection
File containing persistent immobilizer data is found to be inconsistent or missing at start of ECU. Immobilizer codes etc. could not be read from the persistent memory.
Possible cause
System supply voltage (U30) was cut off while the ECU was writing to the file containing persistent immobilizer data.