"Bonnet Open" Signal Showing On IPC (SSM72738)

WARNING: This page is about the LR4 Base, which is a different variant/trim than selected.

Publication date: 2016-04-18
Reference number: SSM72738

"BONNET OPEN" SIGNAL SHOWING ON IPC

TECHNICAL SERVICE BULLETIN

Reference Number(s): SSM72738, Date of Issue: May 16, 2018

LAND ROVER:	Discovery Sport/L550; LR3/L319; Range Rover/L405; Range Rover Evoque/L538; Range Rover Sport/L494
SERVICE CATEGORY:	Body

ISSUE

The bonnet open warning light is on but the bonnet appears closed. This can cause the alarm to trigger or the vehicle to not lock.

CAUSE

The following key potential route causes have been identified:

The bonnet appears closed but is actually not latched on one side - adjustment issue
The incorrect signal is being received from the "bonnet ajar" micro switch - part electrical issue
The latch is unable to close - part mechanical issue

ACTION

Please follow the below steps to rectify the customer concern:

NOTE: The bonnet latch system is designed to not require ANY lubrication to ANY part of the system. Lubrication can impact the performance and should not be done under any circumstances

Check IPC for the "Bonnet Open" warning light (see attachment, figure 1)
Check Message Centre for Alarm Trigger History (see attachment, figure 2)
- This will verify if an alarm is being triggered by the bonnet latch or a different part of the vehicle.
Check retention of BOTH Bonnet Latches (see attachment, figure 3)
- Lift both front corners of the bonnet separately to ensure both latches are fully engaged. If a latch is not latching adjust it upwards, close the bonnet and check for retention