Auto High Beam Disabled (JLRTB02078NAS1)

WARNING: This page is about the LR4 Base, which is a different variant/trim than selected.

Publication date: 2021-03-09
Reference number: JLRTB02078NAS1

AUTO HIGH BEAM DISABLED

TECHNICAL SERVICE BULLETIN

Reference Number(s): JLRTB02078NAS1, Date of Issue: March 09, 2021

LAND ROVER:	All Models
SECTION:	413-08B

MARKETS

NORTH AMERICA

CONDITION SUMMARY

SITUATION:

After 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:

Software concern with the Headlamp Control Module A (HCM) and Headlamp Control Module B (HCMB).

ACTION:

Follow the instruction below.

TOOLS

Jaguar Land Rover (JLR) approved diagnostic equipment

JLR approved battery support unit

WARRANTY

NOTE: * When submitting your Warranty claim within the Warranty portal, use the Condition Code list shown to select the Condition Code which best describes the vehicle defect.

NOTE:

Repair procedures are under constant review, and therefore times are subject to change; those quoted here must be taken as guidance only. Use TOPIxto 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.

WARRANTY INFORMATION

DESCRIPTION	SRO	TIME (HOURS)	CONDITION CODE	CAUSAL PART
Land Rover - JLRTB - Update headlamp control module A and B	85.86.32	0.2	*	LR144918/LR150092/LR154850/LR144290/LR140057
Jaguar-JLRTB - Update headlamp control module A and B	85.86.32	0.2	*	T2H19456/J9C22549/T4K11265/T4N36643/T2H43705

NOTE: Normal Warranty procedures apply.

DIAGNOSTIC INSTRUCTION

CAUTION:
- 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.
Connect the JLR approved diagnostic equipment to the vehicle and begin a new session.
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.
If required, reset the vehicle to Transportation Mode'.
When all of the tasks are complete, exit the session.
Disconnect the JLR approved diagnostic equipment and the JLR approved battery support unit.