DTC B1B01-87: Key Transponder - Controlled Variable Damping - Missing message: Action

First confirm that the customer has not performed a start event with the key incorrectly located when the warning message "Smart Key Not Found" is displayed
Refer to the applicable system wiring diagram(s) and check the power and ground circuits to the immobilizer antenna unit. Repair circuit as required, clear DTC and retest
Re-synchronise ID by reconfiguring the immobilizer antenna unit as a new module. Clear DTC and retest