Lexus RX (RX 350L, RX450h) 2016-2023 Repair Manual: Brake Actuator Operation Sound is Loud during Initial Check

CAUTION / NOTICE / HINT

NOTICE:

After replacing the skid control ECU (brake actuator assembly), perform "Calibration".

Click here

PROCEDURE

1.

PERFORM ROAD TEST

(a) After turning the engine switch on (IG), compare the operating sound of the brake actuator the first time the vehicle speed reaches approximately 25 km/h (16 mph) with a known good vehicle of the same model.

OK:

The operating sound is the same or quieter than that of a known good vehicle of the same model.

HINT:

When the vehicle speed reaches approximately 20 km/h (12 mph), the initial check of the brake actuator assembly is performed and pump motor operation sounds are generated.

OK

END

NG

2.

CHECK BRAKE ACTUATOR BOLT CUSHION

(a) Check that the cushion of the brake actuator bracket assembly is not worn, damaged or deformed.

OK:

The cushion of the brake actuator bracket assembly is not worn, damaged or deformed.

NG

REPLACE BRAKE ACTUATOR BOLT CUSHION

OK

3.

ADJUST INSTALLATION OF BRAKE ACTUATOR ASSEMBLY

(a) Drain the brake fluid.

(b) Disconnect all brake lines from the brake actuator assembly.

Click here

(c) Connect each brake line so that the cushion of the brake actuator assembly is tensioned evenly.

Click here

NOTICE:

After connecting all the brake lines, add brake fluid and bleed the brake system.

Click here

HINT:

By reducing the tension on the brake lines and cushion, the operating sound of the brake actuator assembly may be reduced.

(d) Check that no brake lines interfere the vehicle body or other components.

NEXT

4.

RECHECK SYMPTOM

(a) Perform a road test and check the magnitude of the operating sound again.

OK:

The operating sound is the same or quieter than that of a known good vehicle of the same model.

OK

END

NG

REPLACE BRAKE ACTUATOR ASSEMBLY

    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 ...

    VSC OFF Switch Circuit
    DESCRIPTION The skid control ECU (brake actuator assembly) is connected to the combination meter assembly via CAN communication. Pressing the VSC OFF switch (combination switch assembly) turns off TRA ...

    Other materials:

    Lexus RX (RX 350L, RX450h) 2016-2023 Repair Manual > Front Radar Sensor System: Main Microcomputer in Front Radar Sensor Calibration/Parameter Memory Failure (C1A8C46,C1A8D1C,C1A9000,C1A9100)
    DESCRIPTION When an internal malfunction is detected in the millimeter wave radar sensor assembly, a DTC is stored. DTC No. Detection Item DTC Detection Condition Trouble Area C1A8C46 Main Microcomputer in Front Radar Sensor Calibration/Parameter Memory Failure When the engine switc ...

    Lexus RX (RX 350L, RX450h) 2016-2023 Repair Manual > Rear Blower Motor: Components
    COMPONENTS ILLUSTRATION *1 REAR DOOR INSIDE SCUFF PLATE RH *2 REAR DOOR SCUFF PLATE RH *3 REAR FLOOR FINISH PLATE *4 REAR SEAT OUTER TRACK BRACKET COVER RH ILLUSTRATION *1 DECK TRIM SIDE PANEL ASSEMBLY RH *2 FRONT DECK SIDE TRIM COVER RH *3 NO. 1 LUGGAGE COMPAR ...

    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual

    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual

    © 2023 Copyright www.lexusrx.net
    0.0156