Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: How To Troubleshoot Ecu Controlled Systems

Introduction

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General Information

GENERAL INFORMATION A large number of ECU controlled systems are used in this vehicle. In general, ECU controlled systems are considered to be very intricate, requiring a high level of technical kn ...

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Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Audio And Visual System (for 12.3 Inch Display): Cellular Phone Inspection
CAUTION / NOTICE / HINT HINT: If the operation of a cellular phone or the radio receiver assembly is requested, make sure to follow the instructions closely and perform the operation. PROCEDURE 1. CHECK USAGE CONDITION (a) Check that the vehicle and cellular phone meet the following conditi ...

Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Lighting System (w/ Automatic Headlight Beam Level Control System): Lost Communication With Headlamp Control Module "B" (U0242)
DESCRIPTION for Multiple Beam Headlight: The No. 1 headlight ECU sub-assembly LH communicates with the No. 1 headlight ECU sub-assembly RH via CAN communication. If communication between the No. 1 headlight ECU sub-assembly LH and No. 1 headlight ECU sub-assembly RH stops, the No. 1 headlight ECU ...