NHTSA ID Number: 10153043
Manufacturer Communication Number: SSM74189
TSB/Document Date: 2019-02-19
Summary
During Pre Delivery Inspection (PDI) it may not be possible to activate the Telematics Control Module (TCU) or customers may complain that SOS Limited Functionality is displayed on the Instrument Cluster (IC). Both scenarios will be accompanied with Diagnostic Trouble Code (DTC) U2109-09 (Back up Battery Component Failures) stored in the TCU.
1/8/2019
TOPIx - SSM74189 - Telematics Control Unit (TCU) Fails Activation with DTC U2109-09 stored.
Reference
SSM74189
Models
Discovery / L462
Discovery Sport / L550
Range Rover / L405
Range Rover Evoque / L538
Range Rover Sport / L494
Range Rover Velar / L560
Title
Telematics Control Unit (TCU) Fails Activation with DTC U2109-09 stored.
Category
Electrical
Last modified
17-Dec-2018 00:00:00
Symptom
206000 Warning Indicators
Content
Models & Model Years affected:
L550 17/18/19MY
L538 17/18/19MY
L462 17/18/19MY
L405 17/18/19MY
L494 17/18/19MY
L560 17/18/19MY
Issue:
During Pre Delivery Inspection (PDI) it may not be possible to activate the Telematics Control Module
(TCU) or customers may complain that SOS Limited Functionality is displayed on the Instrument Cluster
(IC).
Both scenarios will be accompanied with Diagnostic Trouble Code (DTC) U2109-09 (Back up Battery
Component Failures) stored in the TCU.
Cause:
TCU backup batteries have a lower state of charge than design intent.
Action:
1. Caution - This procedure requires Pathfinder 205 loaded or later.
2. Connect the JLR approved battery support unit.
3. Connect the JLR approved diagnostic equipment to the vehicle and begin a new session.
4. Using the JLR approved diagnostic equipment read the Diagnostic Trouble Codes (DTCs).
5. Using the JLR approved diagnostic equipment clear the DTCs.
6. When all of the tasks are complete, exit the session.
7. Disconnect the JLR approved diagnostic equipment.
8. Switch ignition to on or run the engine for 60 minutes continuous. The JLR approved battery support
unit should be disconnected if the engine is running.
https://topix.landrover.jlrext.com/topix/content/document/view?id=947671
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1/8/2019
TOPIx - SSM74189 - Telematics Control Unit (TCU) Fails Activation with DTC U2109-09 stored.
9. The vehicle can be used/driven whilst this happening, as the TCU battery will charge in this vehicle
usage condition.
10. Connect the JLR approved battery support unit if disconnected.
11. Connect the JLR approved diagnostic equipment to the vehicle and begin a new session.
12. Using the JLR approved diagnostic equipment read the Diagnostic Trouble Codes (DTCs).
13. If DTC U2109-09 or a warning message persists please submit an EPQR and session file.
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.landrover.jlrext.com/topix/content/document/view?id=947671
2/2
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TSB/Document ID: SSM74189
Replacement Service Bulletin Number:
MFR Communication Date: 2018-12-17
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
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