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NHTSA ID Number: 10177789

Manufacturer Communication Number: SPECIAL SERVICE

TSB/Document Date: 2020-08-03


Summary

RL: The engine control module in the subject vehicles is equipped with software to manage the emissions systems. Due to improper programming in the software, the emissions monitoring system may clear the system test results which can result in a vehicle not being able to complete emission testing/smog checks. Additionally, the improperly programmed software can result in incorrect oil pressure under certain conditions which can cause check engine light illumination, harsh engagement when shifted into Drive, and, in some cases, automatic transmission clutch damage.


From: Kathy Wachs (TMS) Kathy.Wachs@lexuseBay logo.com
Subject: SPECIAL SERVICE CAMPAIGN 20LC01 - Certain 2019 RX 350 and Certain 2019 RX 350L Engine Control Module
Reprogram (Internal)
Date: June 25, 2020 at 12:28 PM
To: LexuseBay logo Recall lexus_recall@internal.toyotaeBay logo.com

Condition
The engine control module in the subject vehicles is equipped with software to manage the
emissions systems. Due to improper programming in the software, the emissions monitoring
system may clear the system test results which can result in a vehicle not being able to
complete emission testing/smog checks. Additionally, the improperly programmed software can
result in incorrect oil pressure under certain conditions which can cause check engine light
illumination, harsh engagement when shifted into Drive, and, in some cases, automatic
transmission clutch damage.

Remedy
Any authorized LexuseBay logo dealer will reprogram the engine control module software and, if
necessary, replace the Automatic Transmission FREE OF CHARGE.

Covered Vehicles:
There are approximately 36,500 vehicles covered by this Special Service Campaign.
Approximately 40 vehicles involved in this Special Service Campaign were distributed to Puerto
Rico.
Model / Years
2019 RX 350
2019 RX 350L

Production Period
Early August 2018 – Late January
2019
Early August 2018 – Late December
2018

Approximate Total
Vehicles
32,700
3,800

Technician Certification Requirements
· Senior
· Master
Owner Letter Mailing Date
LexuseBay logo will begin to notify owners in late June 2020.
Please reference the attachments for additional details.
Dealers will be notified on June 25, 2020 at approximately 1:00 PM Central time.
Thank you for your support.

20LC01 Remed…20.pdf

20LC01 TI RX
shift FI…20.pdf

1

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TSB/Document ID: SPECIAL SERVICE

Replacement Service Bulletin Number:

MFR Communication Date: 2020-06-25

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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