Lexus RX (RX 350L, RX450h) 2016-2022 Repair Manual: Brake Warning Light does not Come ON

DESCRIPTION

The skid control ECU (brake actuator assembly) controls the brake warning light in the combination meter assembly via CAN communication.

CAUTION / NOTICE / HINT

NOTICE:

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

Click here

PROCEDURE

1.

INSPECT COMBINATION METER ASSEMBLY

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Enter the following menus: Body Electrical /Combination Meter / Active Test.

(d) Perform the Active Test of the combination meter assembly using the Techstream.

Body Electrical > Combination Meter > Active Test

Tester Display

Indicat. Lamp Brake

(e) Check the combination meter assembly.

OK:

The brake warning light turns on or off in accordance with the Techstream operation.

OK

REPLACE BRAKE ACTUATOR ASSEMBLY

NG

INSPECT METER / GAUGE SYSTEM

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