SSM73980

7/23/2018
SSM73980 - Vehicle drift to right during straight ahead driving | TOPIx
Reference
SSM73980
Models
Discovery / L462
Title
Vehicle drift to right during straight ahead driving
Category
Chassis
Last modified
23-Jul-2018 00:00:00
Symptom
303000 Steering/Handling
Content
This SSM is only applicable to Left Hand Drive (LHD) vehicles with air
Suspension
Issue:
The customer may express a concern that vehicles drift to the right
during straight ahead driving. The concern is coupled with a need to
constantly apply an opposing force at the steering wheel to maintain
straight ahead driving.
Cause:
Jaguar Land Rover is investigating this issue
Action:
Perform Ride Height Calibration with vehicle in centre ride height
position using Topix procedure: 204-05: Vehicle Dynamic
Suspension - General Procedures - Ride Height Adjustments
Perform a 4 wheel alignment to nominal and centre - as per Topix
procedure: 204-00: Suspension System - General Information General Procedures - Four Wheel Alignment
Perform the alignment taking time to ensure all toe values
are as close to centre as possible. Please double check
these values against TOPIX specification. Ensure the
steering wheel is absolute centre with no preload.
Asses vehicle for pull/drift - repeat assessment 3 times. Has there
been a change?
If yes, release vehicle back to customer and raise an ePQR
If after the above the vehicle is still pulling swap the front wheel
and tyre assemblies left to right and rear assemblies left to right.
Reassess vehicle for drift / pull. Repeat assessment 3 times. Has
there been a change?
If the vehicle still pulls or drifts excessively please raise
a Technical Assistance case on GCM (Global Concern
Management) - this needs to be escalated to engineering
https://topix.jaguar.jlrext.com/topix/content/document/view?id=917077
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7/23/2018
SSM73980 - Vehicle drift to right during straight ahead driving | TOPIx
Technicians - Please rate this SSM and provide comments so that
future communications can be improved.
1 = Poor – Basic information provided – The SSM does not help me
resolve the customer concern.
3 = Average – Adequate information provided – The SSM partially
helps me resolve the customer concern.
5 = Excellent – All required information provided to resolve the
customer concern.
https://topix.jaguar.jlrext.com/topix/content/document/view?id=917077
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