The problem
A no-start condition is not automatically an immobilizer failure.
Immobilizer-related no-start faults can originate in keys, antennas, wiring, low voltage, ECU data, body or start modules, synchronization, or previous programming. Guessing at the cause can create additional faults or unnecessary module replacement.
- Verified owner has a crank-no-start or no-crank authorization fault
- ECU and immobilizer modules lost synchronization
- Replacement module requires authorized configuration
- Failed programming or data corruption interrupted starting


