Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: ABS Operates Before Necessary When Braking
DESCRIPTION
Troubleshooting for when ABS operates too soon due to a noisy signal from the speed sensor, a difference in output, etc.
CAUTION / NOTICE / HINT
NOTICE:
-
After replacing or removing and installing a speed sensor, perform Dealer Mode (Signal Check) inspection to confirm that the speed sensors are operating correctly.
Click here
.gif)
-
After replacing or removing and installing a speed sensor rotor, perform Dealer Mode (Signal Check) inspection to confirm that the speed sensors are operating correctly.
Click here
PROCEDURE
| 1. | PERFORM DEALER MODE (SIGNAL CHECK) INSPECTION (SPEED SENSOR CHECK) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Enter the following menus: Chassis / Brake/EPB / Utility / Signal Check.
(d) Using the Techstream, perform a Dealer Mode (Signal Check) inspection sensor check and check that speed sensor Dealer Mode (Signal Check) inspection items change from incomplete to complete.
Click here
| Tester Display |
|---|
| Signal Check |
OK:
Speed sensor Dealer Mode (Signal Check) inspection items change from incomplete to complete.
| Result | Proceed to |
|---|---|
| OK (for Rear (AWD), Front) | A |
| OK (for Rear (2WD)) | B |
| NG | C |
NOTICE:
- When cleaning the front speed sensor and rear speed sensor (for AWD), make sure to clean the installation hole before installation.
- Do not use parts cleaner when cleaning the front speed sensor rotor and rear speed sensor rotor (for AWD).
HINT:
The rear speed sensor and rear speed sensor rotor are incorporated into the rear axle hub and bearing assembly. (for 2WD)
If the rear speed sensor and rear speed sensor rotor need to be replaced, replace the rear axle hub and bearing assembly. (for 2WD)
| A | .gif) | CLEAN SPEED SENSOR AND SPEED SENSOR ROTOR |
| B | | REPLACE REAR AXLE HUB AND BEARING ASSEMBLY |
| C | | INSPECT AND REPAIR MALFUNCTIONING SPEED SENSOR CIRCUIT |
Excessive Brake Pedal Travel (No Fluid Leaks and No Air in System)
CAUTION / NOTICE / HINT NOTICE: After replacing the skid control ECU (brake actuator assembly), perform "Calibration". Click here PROCEDURE 1. PRE-INSPECTION (a) Brake pedal inspection (1) ...
VSC does not Operate or VSC does not Operate Correctly
DESCRIPTION When TRAC or VSC is operating, the skid control ECU (brake actuator assembly) blinks the slip indicator light to inform the driver that slippage occurred. When a communication malfunction ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Trip Switch: Removal
REMOVAL CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during trip switch removal/installation are shown below. Necessary Procedures After Parts Removed/Installed/Rep ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Audio And Visual System (for 8 Inch Display): No Sound can be Heard from Speakers
PROCEDURE 1. CHECK AUDIO SETTINGS (a) In sound output setting mode, set volume, fader and balance to the initial values and check that the sound is normal. OK: Audio system returns to normal. HINT: Sound quality adjustment measures vary according to the type of amplifier. OK END ...
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
0.0144