LTB01261NAS3 Service Bulletin/Repair Instructions

LTB01261NAS3
TECHNICAL BULLETIN

13 JUN 2019

© 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
This reissue replaces all previous versions. Please destroy all previous versions.

This bulletin supersedes TSB LTB01261NAS2/2019 dated 06 MAR 2019, which should

either be destroyed or clearly marked to show it is no longer valid (e.g. with a line across

the page). Only refer to the electronic version of this Technical Bulletin in TOPIx.

Changes are highlighted in blue
SECTION:

414-00
SUBJECT

/CONCERN:

Auto Stop/Start System Not Functioning As Expected
AFFECTED VEHICLE RANGE:

MODEL:
MODEL YEAR:
VIN:
ASSEMBLY PLANT:
Range Rover Sport (LW)
2014-2017
000001-695612
Solihull
Range Rover (LG)
2014-2017
125341-380216
Solihull
Discovery Sport (LC)
2015-2018
500001-778789
Halewood
Range Rover Evoque (LV)
2016-2018
048210-324535
Halewood
MARKETS:

NORTH AMERICA
CONDITION

SUMMARY:
SITUATION:

The auto stop/start system does not function as expected.

CAUSE:

Software error.

ACTION:

Follow the instructions below.
TOOLS:


Jaguar Land Rover (JLR)

approved diagnostic

equipment


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
Stop/start system - Healthcheck

Gateway Module (GWM) - Update

ECU
SRO
TIME

(HOURS)
CONDITION

CODE
CAUSAL

PART
86.90.89.74
0.2
04
LR073414
86.90.97
0.2
04
LR073414
NOTE:

Normal Warranty procedures apply.
DIAGNOSTIC INSTRUCTION
Range Rover and Range Rover Sport 17 Model Year (MY) vehicles

Range Rover Evoque and Discovery Sport 18 MY vehicles
1.
CAUTIONS:

This procedure requires a minimum of Pathfinder 234 installed or later.

All ignition ON/OFF requests MUST be performed; failure to complete

these steps may cause damage to 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 'Guided Diagnostics – Powertrain – Engine – Auto StopStart system'.

Select 'Next'.

Follow the JLR diagnostics - Stop Start healthcheck - on screen

prompts.

NOTE:

Important - Disconnect the JLR approved battery support unit

before starting the engine.
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.
DIAGNOSTIC INSTRUCTION
Range Rover and Range Rover Sport 16 MY vehicles and earlier

Range Rover Evoque and Discovery Sport 17 MY vehicles and earlier

1.
CAUTIONS:

This procedure requires a minimum of SDD 156.06 and Software

Management Pack 317 installed or later.

All ignition ON/OFF requests MUST be performed; failure to complete

these steps may cause damage to 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.
Click here to run: Powertrain - Stop/start system - Healthcheck. (156.06 / 74310)
4.
If the hyperlink is not available, the application can be found as follows:

Select the 'Diagnosis' Session Type.

Select any of the following symptom:

Powertrain - Engine system - Starting system - Start-stop

system - Inoperative.

Powertrain - Engine system - Starting system - Start-stop

system - Intermittent operation.

From Recommendations, run ‘Powertrain - Stop/start system Healthcheck’.

NOTES:

Investigate and rectify any other auto stop/start

inhibits other than the 'Estimated Cold Cranking

Voltage at Present State of Charge'.

Charging of the secondary battery by the Power

Supply Distribution Box (PSDB) is controlled by the

BCM/GWM which runs checks to determine when this

is required. When checking secondary battery voltage,

it is acceptable for the voltage to be lower than that

of the primary battery.

The PSDB must not be replaced solely on the

observation of differences or fluctuations between

measured voltages seen at the primary and secondary

batteries. Replacement of the PSDB should only be

made if a related DTC is present and if after working

through the recommendations, this is required, or in

the event of observed physical damage to the unit.
Click here to run: Configure existing module – Gateway module. (156.06 / 53400)
5.
If the hyperlink is not available, the application can be found as follows:

Select the 'Diagnosis' Session Type.

Select any of the following symptom:

Powertrain - Engine system - Starting system - Start-stop

system - Inoperative.

Powertrain - Engine system - Starting system - Start-stop

system - Intermittent operation.

Run and close the 'Datalogger' tool to reveal the 'Extras'

tab, select the 'Extras' tab.

Run ‘Configure existing module – Gateway module’.
6.
If required, reset the vehicle to ‘Transportation Mode’.
7.
When all of the tasks are complete, exit the session.
8.
Disconnect the JLR approved diagnostic equipment and the JLR approved

battery support unit.

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