Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual: Fail-safe Chart
FAIL-SAFE CHART
AUTO WIPER FAIL-SAFE FUNCTION
(a) If the wiper system is malfunctioning, the windshield wiper motor and link assembly (wiper ECU) performs a fail-safe function to control the system.
| Item | Fail-Safe Function | Conditions to Return to Normal Condition |
|---|---|---|
| Overheat protection | Decreases wiper operating speed in order to protect the windshield wiper motor and link assembly if the windshield wiper motor and link assembly temperature becomes excessively high.
| The windshield wiper motor and link assembly returns to normal. |
| Snow protection | Reverses the direction of the wipers when an excessive load is detected near the extremities of the wiper operating range. | Foreign matter, such as snow, is removed and the wiper operating range returns to normal. |
| Excessive load protection | Stops wiper operation when an excessive load is detected when the wipers are near the center of the wiper operating range. | The front wiper switch is turned off and then to any operating position. |
RAIN SENSOR FAIL-SAFE FUNCTION
(a) The windshield wiper switch assembly performs the fail-safe function when the wiper system cannot properly receive the necessary signals for wiper system control or a wiper system component is malfunctioning.
| Item | Fail-safe Function | Conditions to Return to Normal Condition |
|---|---|---|
| Rain sensor LIN communication error | Continues control according to the conditions detected before the malfunction | LIN communication returns to normal. |
| Rain sensor voltage is too low | Rain sensor voltage returns to normal. | |
| Abnormal rain sensor signal | Performs intermittent operation according to the position of the auto sensitivity adjustment switch. | The rain sensor returns to normal. |
| The rain sensor temperature is too high (90°C (194°F) or higher). | Stops the wiper operation | |
| The rain sensor temperature is too low (-15°C (5°F) or lower). |
Dtc Check / Clear
DTC CHECK / CLEAR CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / (desired system) / ...
Data List / Active Test
DATA LIST / ACTIVE TEST DATA LIST NOTICE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a pa ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual > Smart Access System With Push-button Start (for Start Function): System Diagram
SYSTEM DIAGRAM Component Outline Engine switch
Transponder key amplifier
Turns on the power and starts the engine.
Contains a built-in transponder key amplifier to start the engine when the electrical key transmitter sub-assembly does not operate properly due to a depleted ...
Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual > Steering System: Precaution
PRECAUTION HANDLING PRECAUTIONS FOR STEERING SYSTEM (a) Care must be taken when replacing parts. Incorrect replacement may affect the performance of the steering system and result in a driving hazard. HANDLING PRECAUTIONS FOR SRS AIRBAG SYSTEM (a) This vehicle is equipped with a Supplemental Restrai ...
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
0.0166