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N257 UPS00120-2BNAS1

TECHNICAL BULLETIN
22 JAN 2020
© 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.

SECTION:
100-00

SUBJECT/CONCERN:
Update Prior to Sale: MHEV DCDC FET Operation

AFFECTED VEHICLE RANGE:
MODEL:

MODEL YEAR:

VIN:

Discovery Sport (LC)

2020

360001-843860

New Range Rover Evoque (LZ)

2020

000001-054618

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MARKETS:
NORTH AMERICA

CONDITION SUMMARY:

This bulletin does not apply to any vehicles already registered and in use, either
with the retailer or customer. Any vehicle already in use may continue to be driven
and any repair instructions will be communicated through a separate bulletin.
SITUATION:
A potential issue has been identified on certain Land Rover vehicles within the listed
Affected Vehicle Range where updated DCDC Invertor software has been released to
update the functionality of the Field Effect Transistors (FET) for vehicles manufactured
prior to October 1, 2019.
ACTION:
Retailers are required to HOLD affected new vehicles that are within your control and
refrain from releasing the vehicles for new vehicle sale pending completion of the
procedure(s) detailed in this Technical Bulletin. Unsold vehicles should have this
performed as part of the Pre-Delivery Inspection (PDI) process but must have it
completed prior to vehicle handover to the customer.

WARRANTY:

NOTE:
Use the Jaguar Land Rover claims submission system to make sure that a vehicle
is eligible for this program prior to undertaking any rework action.

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At the time of confirming a booking for vehicle repair, make sure that all open Recall
and Service Actions are identified to make sure the correct parts are available and
adequate workshop time is allocated for repairs to be completed at one visit.
Warranty claims must be submitted quoting the Program Code and the relevant
Option Code; this will result in payment of the stated time. The SRO and parts
information is included for information only. The Option Code(s) that allows for the
drive in/drive out allowance may only be claimed if the vehicle is brought back into the
workshop for this action alone to be undertaken.
Repair procedures are under constant review and therefore times/prices are subject to
change; those quoted here must be taken as guidance only. Use TOPIx to obtain the
latest repair time.
This program is valid for a limited time only. Warranty claims with a repair date prior to
the January 15, 2021 closure date must be submitted or payment within 30 calendar
days of completion of the repair.
PROGRAM
CODE

OPTION
CODE

DESCRIPTION

SRO

TIME
(HOURS)

N257

A

Electric Power Inverter Converter
Control Module 'D' (EPICD) - Update Replace ECU - Mild Hybrid Electric
Vehicle (MHEV)

85.15.06.32

0.2

N257

B

EPICD - Update - Replace ECU - MHEV
Drive in/drive out

85.15.06.32
02.02.02

0.2
0.2

Normal Warranty policies and procedures apply.

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DIAGNOSTIC INSTRUCTION:

CAUTION:
All ignition ON/OFF requests MUST be performed; failure to do so may cause
damage to vehicle control modules.
1.

CAUTION:
A Jaguar Land Rover-approved battery support unit must be connected
to the vehicle startup battery during diagnosis / module programming.
Connect the Jaguar Land Rover-approved battery support unit to the vehicle
startup battery.

2.

NOTE:
The Jaguar Land Rover-approved diagnostic equipment must be loaded
with PATHFINDER version 265 (or later).
Connect the Jaguar Land Rover-approved diagnostic equipment to the
vehicle and begin a new session.

3.

Follow all on-screen instructions.
◦

1.

Select 'ECU Diagnostics'.

◦

2.

Select 'Electric Power Inverter Converter Control Module
'D' [EPICD]'.

◦

3.

Select 'Update ECU'.

◦

4.

Follow the on-screen instructions until the application finishes
successfully.
◦

Go to the next step.

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4.

Only if required: set the vehicle to Transit mode.

5.

When all tasks are completed, exit the current session.

6.

Disconnect the diagnostic equipment and battery support unit from the
vehicle.

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