DESCRIPTION
This procedure is for troubleshooting when the brake warning light (yellow) remains on but no DTCs are output.
The skid control ECU (brake actuator assembly) controls the brake warning light (yellow) in the combination meter assembly via CAN communication.
CAUTION / NOTICE / HINT
NOTICE:
Click here
PROCEDURE
1. | CHECK VEHICLE CONTROL HISTORY (ELECTRIC PARKING BRAKE SYSTEM) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Enter the following menus: Chassis / Brake/EPB / Utility / Vehicle Control History (RoB).
(d) d. Using the Techstream, check for Vehicle Control History.
Click here
Tester Display |
---|
Vehicle Control History (RoB) |
HINT:
If vehicle control history is stored when the electric parking brake system is suspended, the brake warning light (yellow) illuminates.
Result | Proceed to |
---|---|
There is no vehicle control history for when the electric parking brake system was suspended. | A |
There is vehicle control history for when the electric parking brake system was suspended. | B |
B | ![]() | ERFORM TROUBLESHOOTING AND REPAIR REGARDING VEHICLE CONTROL HISTORY |
|
2. | INSPECT COMBINATION METER ASSEMBLY (BRAKE WARNING LIGHT (YELLOW)) |
(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.
Click here
Tester Display |
---|
ECB Warning |
(e) Check the combination meter assembly.
OK:
The brake warning light (yellow) turns on or off in accordance with Techstream operation.
OK | ![]() | REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) |
NG | ![]() | INSPECT METER / GAUGE SYSTEM |
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Headlight Cleaner Motor: Installation
INSTALLATION PROCEDURE 1. INSTALL HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY (a) Install the headlight cleaner motor and pump assembly as shown in the illustration. Install in this Direction (b) Connect the connector. (c) Install the headlight cleaner hose with the clip as shown in the illu ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Emission Control System: System Diagram
SYSTEM DIAGRAM *1 Fuel Tank Cap Assembly *2 Fuel Cut-off Valve *3 Fuel Tank Assembly *4 Fuel Fill Check Valve *5 Canister Filter *6 Refueling Valve *7 Canister (Charcoal Canister Assembly) *8 Pump Motor *9 Canister Pump Module (Charcoal Canister Leak Det ...