Lexus RX350 2019 — technical service bulletin
Bulletin SPECIAL SERVICE · NHTSA communication 10177789 · issued Jun 25, 2020
Technical service bulletin
communication type
Electrical System
component
2019
model years
1
vehicle entries
Official 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.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.