Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual: Fail-safe Chart

• If there is a problem with sensor signals or actuator systems, the skid control ECU prohibits power supply to the brake actuator assembly and informs the ECM of a VSC system malfunction.

  The brake actuator assembly turns off the solenoids and the ECM stops its VSC control according to signals from the skid control ECU. The vehicle will operate in a manner similar to a vehicle that is not equipped with ABS, TRAC, VSC and brake hold systems.

  ABS control will be prohibited, but EBD control will continue to the extent that EBD control is possible. If EBD control is impossible, the brake system warning light will come on to warn the driver.

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• If a VSC system component malfunctions before VSC control begins, VSC control will be prohibited. If a system component malfunctions during VSC control, the system will gradually stop performing control so as not to trigger a sudden change in vehicle operation.

  If it is impossible for control to continue, the warning light comes on to inform the driver of system control termination.

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• When a malfunction occurs in the VSC system or electric parking brake system, brake hold control prohibits brake hold operation to prevent incorrect operation and protect the system.

  HINT:

  When control is prohibited, the brake hold operated indicator light blinks, and the code for the system where the malfunction occurred during diagnostic mode is displayed by the brake hold standby indicator light.

• If the skid control ECU (brake actuator assembly) detects a malfunction in the SRS system, secondary collision brake control is prohibited to prevent undesired operation and to protect the system.

  HINT:

  When control is prohibited, a message is displayed on the multi-information display in the combination meter assembly.

Freeze Frame Data

FREEZE FRAME DATA FREEZE FRAME DATA (a) Using the Techstream, check the vehicle condition (ECU, sensor) when the brake system operates or a DTC is output. CHECK FREEZE FRAME DATA WHEN DTC WAS STORED ...

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) 2016-2026 Repair Manual > Cylinder Head: Reassembly
REASSEMBLY CAUTION / NOTICE / HINT HINT: Use the same procedure for bank 1 and bank 2. The following procedure is for bank 2. PROCEDURE 1. INSTALL SPARK PLUG TUBE HINT: When using a new cylinder head LH, the spark plug tubes must be replaced. (a) Apply adhesive to a new spark plug tube as ...

Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Air Conditioning System: Pressure Sensor Circuit (B1423/23)
DESCRIPTION This DTC is stored if refrigerant pressure on the high pressure side is extremely low (196 kPa (2.0 kgf/cm2, 28 psi) or less) or extremely high (2812 kPa (28.7 kgf/cm2, 408 psi) or more). The air conditioner pressure sensor, which is installed to the high pressure side pipe to detect ref ...