JLRTB02078NAS1

3/9/2021
TECHNICAL BULLETIN
JLRTB02078NAS1
TECHNICAL BULLETIN
09 MAR 2021
© Jaguar Land Rover North America, LLC
NOTE: The information in Technical Bulletins is intended for use by trained, professional
Technicians with the knowledge, tools, and equipment required to do the job properly and
safely. It informs these Technicians of conditions that may occur on some vehicles, or
provides information that could assist in proper vehicle service. The procedures should not
be performed by 'do-it-yourselfers'. If you are not a Retailer, do not assume that a condition
described affects your vehicle. Contact an authorized Land Rover service facility to
determine whether this bulletin applies to a specific vehicle.
INFORMATION
SECTION:
413-08B
SUBJECT/CONCERN:
Auto High Beam Disabled
AFFECTED VEHICLE RANGE:
MODEL:
MODEL YEAR:
VIN:
ASSEMBLY PLANT:
Defender (LE)
2020-2021
000001-047477
Nitra (Slovakia)
Discovery (LR)
2021
441139-447209
Nitra (Slovakia)
Discovery Sport (LC)
2021
861312-889599
Halewood
New Range Rover Evoque (LZ)
2021
097340-134524
Halewood
Range Rover Velar (LY)
2021
265184-302502
Solihull
F-PACE (X761)
2021
642591-669482
Solihull
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MODEL:
MODEL YEAR:
VIN:
ASSEMBLY PLANT:
E-PACE (X540)
2021
008978-017086
Graz (Austria)
I-PACE (X590)
2021
600732-614259
Graz (Austria)
XF (X260)
2021
Y85911-Y88887
Castle Bromwich
MARKETS:
NORTH AMERICA
CONDITION SUMMARY:
SITUATION:
A er a short sleep cycle the auto high beam menu is set to disabled and the auto high
beam feature will not operate, with no ability to override this option.
CAUSE:
So ware concern with the Headlamp Control Module A (HCM) and Headlamp Control
Module B (HCMB).
ACTION:
Follow the instruction below.
TOOLS:
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TECHNICAL BULLETIN

Jaguar Land Rover (JLR)
approved diagnostic equipment

JLR approved battery support
unit
WARRANTY:
NOTES:
Repair procedures are under constant review, and therefore times are subject to
change; those quoted here must be taken as guidance only. Use TOPIx to obtain
the latest repair time.
The JLR claims submission system requires the use of causal part numbers. Labor
only claims must show the causal part number with a quantity of zero.
DESCRIPTION
SRO
TIME
(HOURS)
CONDITION
CODE
Land Rover JLRTB - Update
headlamp
control module
A and B
99.01.50
0.2
04
LR144918/LR150092/LR154850/LR144290/LR1
Jaguar - JLRTB
- Update
headlamp
control module
A and B
99.01.50
0.2
04
T2H19456/J9C22549/T4K11265/T4N36643/T2H
CAUSAL PART
NOTE:
Normal Warranty procedures apply.
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TECHNICAL BULLETIN
DIAGNOSTIC INSTRUCTION:
1.
CAUTIONS:
This procedure requires a minimum of Pathfinder 318 installed or later.
All ignition ON/OFF instructions must be followed. Failure to complete
these instructions may cause damage to the vehicle control modules.
NOTE:
The JLR approved diagnostic equipment will read the Vehicle Identification
Number (VIN) for the vehicle and automatically take the vehicle out of
‘Transportation Mode’ if required.
Connect the JLR approved battery support unit.
2.
Connect the JLR approved diagnostic equipment to the vehicle and begin a new
session.
3.
Follow the JLR approved diagnostic equipment prompts.
Select 'ECU Diagnostics'.
Select 'Headlamp Control Module 'A' [HCM]'.
Select 'Update ECU'.
Follow all on-screen instructions to complete the task.
Select 'Headlamp Control Module 'B' [HCMB]'.
Select 'Update ECU'.
Follow all on-screen instructions to complete the task.
4.
If required, reset the vehicle to ‘Transportation Mode’.
5.
When all of the tasks are complete, exit the session.
6.
Disconnect the JLR approved diagnostic equipment and the JLR approved battery
support unit.
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