Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
- Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
| Symptom | Suspected Area | Link |
|---|---|---|
| Key-linked or wireless transmitter-linked function does not operate | Sliding roof ECU (Sliding roof drive gear assembly) | |
| Power window control system | - | |
| Main body ECU (Multiplex network body ECU) | - | |
| Key-off operation function operates even if operating conditions are not satisfied | Sliding roof ECU (Sliding roof drive gear assembly) | |
| Roof sunshade ECU (Sliding roof drive gear assembly) | - | |
| Main body ECU (Multiplex network body ECU) | - | |
| Panoramic moon roof system does not operate | Sliding roof ECU (Sliding roof drive gear assembly) | |
| Roof sunshade ECU (Sliding roof drive gear assembly) | - | |
| Map light assembly | - | |
| Wire harness or connector | - |
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Initialization
INITIALIZATION INITIALIZE PANORAMIC MOON ROOF SYSTEM (FOR SLIDING ROOF) NOTICE:
When the sliding roof glass sub-assembly, sliding roof housing panel or slide roof rail sub-assembly is adjusted or r ...
Diagnosis System
DIAGNOSIS SYSTEM DESCRIPTION (a) Panoramic moon roof system data and Diagnostic Trouble Codes (DTCs) can be read through the vehicle Data Link Connector 3 (DLC3). When the system seems to be malfuncti ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Smart Access System With Push-button Start (for Start Function): Detecting Vehicle Submersion (B2277)
DESCRIPTION This DTC is stored when a malfunction in the water submersion detection circuit inside the certification ECU (smart key ECU assembly) is detected. DTC No. Detection Item DTC Detection Condition Trouble Area Note B2277 Detecting Vehicle Submersion Water submersion detec ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Air Conditioning System: Air Conditioning Control Panel Circuit
DESCRIPTION The radio receiver assembly (A/C control panel) switch signals are sent to the air conditioning amplifier assembly via CAN communication. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Inspect the fuses for circuits related to this system before performing the following procedure. PROCE ...
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
- For your information
- Pictorial index
- For safety and security
- Instrument cluster
- Operation of each component
- Driving
- Lexus Display Audio system
- Interior features
- Maintenance and care
- When trouble arises
- Vehicle specifications
- For owners
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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