DTC B136B-64: Suspension Control Module Wake-up Signal - Signal plausibility failure: Action

Check for related DTCs and refer to the relevant DTC index. Clear the DTCs and retest
Refer to the appropriate system wiring diagram and check the suspension control module power, ground, ignition and air suspension control signal circuits for open circuit. Repair circuit as required, clear the DTCs and retest
Using Jaguar Land Rover Approved Diagnostic Equipment, confirm that the central junction box has the correct calibration data and software versions and install as required. Clear the DTCs and retest