Parking Aid System - False Front Warnings
No: LA413-003Issue: 1
Date: 11 Sep 2006
SECTION: 413-13 - INSTRUMENT PANEL
Front Parking Aid False Warnings
AFFECTED VEHICLE RANGE:
LR3 (LA) (equipped with front parking aid)
VIN:
6A342848 to 6A394387
CONDITION SUMMARY:
FRONT PARKING AID SOUNDS UNNECESSARILY
Situation:
A customer may report a concern that the front parking aid is sounding-off unnecessarily.
NOTE:
A new parking aid system control module has been developed to provide an enhanced front parking aid operation strategy for the customer.
The original park aid system strategy activates the front parking sensors when a forward gear is selected following reverse. Sensor operation is deactivated when the vehicle speed exceeds 10 mph (16 kph). Sensor operation will reactivate when the vehicle speed drops below 10mph (16 kph). This sensor activation below 10mph can result in audible warnings as the vehicle is coming to a stop and another vehicle or pedestrian passes in front of the vehicle. A customer may report this audible warning as unnecessary or "false".
This sensor activation is not a fault with the parking aid system.
NOTE:
Following a repair, which includes replacement of the parking aid control module, the customer must be informed of this new front parking aid system operation as follows:
The parking aid operation strategy has now been enhanced to only permit the front sensors to reactivate when the following conditions are met:
^ Vehicle speed drops below 10mph (16 kph) and the front parking aid switch is manually selected. (The front parking aid switch is located on the center instrument panel.)
^ A forward gear is selected following reverse gear selection during parking.
Action:
If a customer expresses this false warning concern, refer to the Repair Procedure detailed in this bulletin to replace the parking aid control module with the latest configuration. Ensure that the customer is instructed on the use of the enhanced front parking aid system.
PARTS:
NOTE:
The new software strategy is programmed into the new control module (YWC500550) and installed into vehicles after the closing VIN 6A394387.
YWC500550 Parking aid control module Qty 1
WARRANTY:
NOTE:
Repair procedures are under constant review, and therefore times are subject to change; those quoted here must be taken as guidance only. Always refer to DDW to obtain the latest repair time.
DDW requires the use of causal part numbers. Labor only claims must show the causal part number with a quantity of zero.
Normal warranty policy and procedures apply.
REPAIR PROCEDURE
REPLACE PARKING AID CONTROL MODULE
NOTE:
Global Technical Reference (GTR) lookup sequence is as follows:
GTR Home > NAS > Service Information/ LA - LR3/2005 > Discovery 3/LR3 2005 Workshop Manual > Bookmark "Electrical/Battery and Charging System/414-00: Charging System - General Information" > Link "Specifications"
1. Refer to LR3 Workshop Manual Section 414-00 and disconnect the battery ground cable.
NOTE:
Global Technical Reference (GTR) lookup sequence is as follows:
GTR Home > NAS > Service Information/ LA - LR3/2005 > Discovery 3/LR3 2005 Workshop Manual > Bookmark "Body and Paint/501-05: Interior Trim and Ornamentation" > Link "C-Pillar Lower Trim Panel"
2. Refer to LR3 Workshop Manual Section 501-05 and remove the left side C-pillar lower trim panel.
3. Remove the parking aid module as follows:
(Figures 1 and 2)
^ Remove the two retaining nuts.
^ Disconnect the three electrical connectors.
4. Replace the parking aid module with a new unit as follows:
^ Connect and secure the electrical connectors to the new unit.
^ Tighten the retaining nuts to 5 Nm (4 lbf-ft).
5. Refer to LR3 Workshop Manual Section 414-00 and install the C-pillar lower trim panel.
6. Refer to LR3 Workshop Manual Section 501-05 and connect the battery ground cable.
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