Land Rover Discovery Owners & Service Manuals

Land Rover Discovery: Warning Devices / Description and Operation

COMPONENT LOCATION

Warning Devices Description and Operation

  1. Image Processor Control Module (IPCM)
  2. Right Side Door Mirror Warning Lamp
  3. Right Side Blindspot Monitoring Control Module (BMCM)
  4. Rear View Camera (RVC)
  5. Left Side Blindspot Monitoring Control Module (BMCM)
  6. Left Side Door Mirror Warning Lamp

OVERVIEW

BLINDSPOT MONITORING SYSTEM

The blindspot monitoring system is a feature that is there to help assist the driver safely crossover in moving traffic.

In addition to the functionality provided by the blindspot monitoring system, the closing vehicle sensing system monitors a larger area behind the vehicle.

Reverse Traffic Detection (RTD) is a further enhancement to the blindspot monitoring system. This will inform the driver if a vehicle is approaching when in the reversing mode.

The blindspot monitoring system comprises off:

  • Two Blindspot Monitoring Control Module (BMCM)'s.
  • Left side door mirror assembly.
  • Right side door mirror assembly.
  • Rear view camera

LANE DEPARTURE WARNING (LDW) SYSTEM

Lane Departure Warning (LDW) is designed to warn the driver when the vehicle drifts out of lane.

The LDW system uses the Image Processing Control Module (IPCM) that monitors the road ahead. When the vehicle begins to drift from the lane, the IPCM will alert the driver by vibrating the steering wheel.

TRAFFIC SIGN RECOGNITION (TSR) SYSTEM

Traffic Sign Recognition (TSR) system uses the Image Processing Control Module (IPCM) to identify traffic signs on either side of the road and on bridges, providing the driver with information about the latest detected speed limit, cancellation signs and overtaking regulations via the Instrument Cluster (IC) display and Head Up Display (HUD).

AUTONOMOUS EMERGENCY BRAKING (AEB)

The Autonomous Emergency Braking (AEB) system combines two functionalities:

  1. A forward collision warning informs the driver of a collision risk concerning the vehicle ahead, providing the driver with an opportunity to avoid the situation by braking or steering.
  2. If the driver does not react, the Intelligent Emergency Braking (IEB) system applies full braking, with the aim to avoid or limit the collision impact velocity.

Autonomous Emergency Braking (AEB) is an enhanced version of Intelligent Emergency Braking (IEB).

The system uses an Image Processor Control Module (IPCM), mounted adjacent to the rear view mirror, to capture a view of the road ahead.

The IPCM hosts the AEB feature.

The AEB provides the following functions:

  • Activates an audible collision risk warning to the driver.
  • Activates a visual driver warning.
  • Automatically applies the braking system.
  • Provides a confirmation message to the driver that the system has been triggered.

The system will only be operational when driving on normal roads. AEB will have reduced performance when the vehicle is off-road. However it is advised that the system is deactivated while driving off road.

DESCRIPTION

BLINDSPOT MONITORING CONTROL MODULE (BMCM)

BLINDSPOT MONITORING CONTROL MODULE (BMCM)

CAUTION:

The blindspot monitoring system is designed as a driver aid not a safety device. The driver should always exercise due care and attention whilst driving.

There are two Blindspot Monitoring Control Module (BMCM)'s and they are located in the corner of the rear bumper, one on each side.

Each BMCM connector has power, ground, MS (medium speed) Controller Area Network (CAN) comfort bus wires, and two private CAN wires.

The system uses two radar sensors; they are incorporated in each of a BMCM's, that are located at the rear of the vehicle (one module each side) and are connected via a private Controller Area Network (CAN) bus to exchange information.

Each BMCM carries out an auto-alignment self-check every time when in use. This procedure can take up to an hour in some environments; however the operation of the blindspot monitoring system will continue to operate as normal.

The blind spot monitoring modules receive vehicle speed on the MS CAN comfort bus. The system activates at 9 mph (15km/h) and remains active until the speed lowers below 3mph (5km/h).

IMAGE PROCESSING CONTROL MODULE (IPCM)

IMAGE PROCESSING CONTROL MODULE (IPCM)

The Image Processing Control Module (IPCM) is able to detect road lane markings, traffic sign markings and monitor the road ahead for Lane Departure Warning (LDW), Traffic Sign Recognition (TSR) and Autonomous Emergency Braking (AEB) systems.

The IPCM is located in the rear view mirror.

The IPCM is a module that has two built in forward facing cameras. The IPCM receives an ignition supply from the Rear Junction Box (RJB) and information can be exhanged from the IPCM via the High Speed (HS) Controller Area Network (CAN) chassis bus to the other modules.

OPERATION

BLINDSPOT MONITORING CONTROL MODULE (BMCM)

The blindspot monitoring system uses a cross over radar pattern to the rear of the vehicle and is used to determine actual moving vehicles eliminating any stationary roadside objects.

The system monitors an area extending from the exterior mirrors rearwards, to approximately 6 metres behind the rear wheels, and up to 2.5 metres from the side of the vehicle.

The driver will be alerted, with a solid warning lamp in the relevant door mirror.

BLINDSPOT MONITORING CONTROL MODULE (BMCM)

The system will warn the driver of the presence of vehicles in a defined closing vehicle warning zone, which poses a threat to the driver if a lane change manoeuver is made.

The driver will be notified of the threat by flashing the existing blindspot icon in the relevant door mirror.

NOTE:

If an overtaking vehicle is detected on both sides of the vehicle simultaneously, the warning alert icons in both mirrors will illuminate

The Light Emitting Diode (LED)'s are located towards the outside extremity of the mirror face, within the peripheral view of the driver but not in any area of the mirror where they could obscure or distract from the image.

BLINDSPOT MONITORING CONTROL MODULE (BMCM)

  1. Warning Alert Icon
  2. System Status Warning Indicator

The LED lighting alerts are as follows:

  • Amber alert LED icon permanently lit - System operational, vehicle detected in blind spot area.
  • No LED's lit - System active no vehicle detected in blind spot area.

    Amber status LED permanently lit - System not active or faulty.

  • Amber alert LED icon flashing - System operational, potential hazard.

The system has operating limitations and is automatically turned off under certain operating conditions. During these operating conditions the amber status LED is permanently lit.

The system operating limitations are as follows:

  • The system is inactive until vehicle speed is greater than 9mph - 13mph (amber status LED permanently lit).
  • The system is inactive if an approved trailer is connected to the vehicle (amber status LED permanently lit).
  • The system is inactive when reverse gear or park is selected (amber status LED permanently lit).

NOTE:

If Reverse Traffic Detection (RTD) is fitted the standby dot will be off when reverse is selected indicating that the system is active. If RTD is not fitted then the standby dot will be on indicating that the system is not active.

If either of the radar signals are blocked or distorted, for example by water, the radar face of the module is covered in mud, sleet or snow the system may detect this and be disabled with the amber status LED permanently lit together with a 'blindspot monitoring blocked' message displayed in the Instrument Cluster (IC) message center. The system is disabled until the blockage is cleared.

If there is a fault in the system the amber status LED is permanently lit and a 'blindspot monitoring not available' message displayed in the IC message center. The system is disabled until the fault is rectified.

System fault and blockage warnings are as follows:

  • The system is disabled when the radar module signal is blocked (amber status LED permanently lit and IC message).
  • The system is disabled by a fault (amber status LED permanently lit and IC message).

If there is a failure in the communication network and the warning LED cannot be displayed in the mirror, a failure message will be displayed in the IC message center.

When any faults are present in the system, Diagnostic Trouble Code (DTC)'s are stored in both Blindspot Monitoring Control Module (BMCM)'s appropriate to each module. Replacement of modules requires the right module to be configured using the Land Rover approved diagnostic equipment.

Calibration of the modules using the Land Rover approved diagnostic equipment enables updates to be downloaded as new technology becomes available or any fault concerns require software updates.

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