Lexus RX (RX 350L, RX450h) 2016-2024 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.
Horn System| Symptom | Suspected Area | Link |
|---|---|---|
| Horn does not sound | HORN fuse | - |
| HORN relay | | |
| Horn button assembly | | |
| Steering pad switch assembly | | |
| Spiral cable with sensor sub-assembly | | |
| Instrument panel junction block assembly | | |
| Harness or connector | - | |
| Horn sounds all the time | HORN relay | |
| Horn button assembly | | |
| Steering pad switch assembly | | |
| Spiral cable with sensor sub-assembly | | |
| Instrument panel junction block assembly | | |
| Main body ECU (Multiplex network body ECU) | | |
| Harness or connector | - | |
| Low pitched horn operates but high pitched horn does not operate | High pitched horn assembly | |
| Harness or connector | - | |
| High pitched horn operates but low pitched horn does not operate | Low pitched horn assembly | |
| Harness or connector | - |
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System Diagram
SYSTEM DIAGRAM ...
Data List / Active Test
DATA LIST / ACTIVE TEST PERFORM ACTIVE TEST HINT: Using the Techstream to perform Active Tests allows relays, VSVs, actuators and other items to be operated without removing any parts. This non-intrus ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual > Combination Switch: Components
COMPONENTS ILLUSTRATION *1 CONSOLE PANEL SUB-ASSEMBLY *2 INSTRUMENT CLUSTER FINISH PANEL ORNAMENT *3 LOWER NO. 1 INSTRUMENT PANEL FINISH PANEL *4 LOWER NO. 2 INSTRUMENT PANEL FINISH PANEL *5 REAR CONSOLE UPPER PANEL *6 SHIFT LEVER KNOB SUB-ASSEMBLY ILLUSTRATION * ...
Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual > Smart Access System With Push-button Start (for Entry Function): Driver Side Door Entry Lock and Unlock Functions do not Operate
DESCRIPTION If the entry lock and unlock functions do not operate for the driver door only, the request code may not be being transmitted from the driver door or the front door outside handle assembly (for driver door) (touch sensor) may be malfunctioning. If the entry functions for other doors oper ...
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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