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Home >> Lexus >> 2021 >> ES 250 Base >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Electronically Controlled Brake System (Except Hybrid) - Diagnostic Codes (4 Of 4) & Symptom Tests >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model) >> Brake Warning Light does not Come ON [06/2018 - ] >> Procedure

Brake Warning Light does not Come ON [06/2018 - ]: Procedure

  1. INSPECT COMBINATION METER ASSEMBLY 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Enter the following menus: Body Electrical / Combination Meter / Active Test.
    4. Perform the Active Test of the combination meter assembly using the Techstream.

      Refer to DATA LIST / ACTIVE TEST [06/2018 - 08/2020] , or refer to DATA LIST / ACTIVE TEST [08/2020 - 08/2021] , or refer to DATA LIST / ACTIVE TEST [08/2021 - ]

      Body Electrical > Combination Meter > Active Test 

      Tester Display
      Brake Warning
    5. Check the combination meter assembly.

      OK

      The brake warning light / red (malfunction) turns on or off in accordance with Techstream operation.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to  REMOVAL [06/2018 - 08/2020]  , or refer to  REMOVAL [08/2020 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

    Result: 

    NG 

    INSPECT METER / GAUGE SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ]