: Check the Central Junction Box (CJB) fuses related to the security system. Diagnostic & Repair Steps 1. Visual Inspection
: Most owners find it easiest to replace the entire Alarm Siren Module with a new or functional used unit. land rover b1d1787
Sometimes the actuator loses its "end-stop" learning. Disconnect the negative battery terminal for 15 minutes. Reconnect. Then, turn the ignition to ON (do not start) and press the MAX A/C button three times within 5 seconds. This forces a recalibration. If the actuator isn't mechanically broken, this may resolve a fluke high-voltage code. : Check the Central Junction Box (CJB) fuses
: 87 (Missing Message). This means the Central Junction Box (CJB) or Body Control Module (BCM) is not receiving the expected signal from the siren. Common Symptoms : The alarm may not sound when triggered. Sometimes the actuator loses its "end-stop" learning