Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual: Dtc Check / Clear

Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual / Vehicle Interior / Theft Deterrent / Keyless Entry / Smart Access System With Push-button Start (for Start Function) / Dtc Check / Clear

DTC CHECK / CLEAR

NOTICE:

When using the Techstream with the engine switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Access. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.

CHECK FOR DTC (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (POWER SOURCE CONTROL))

(a) Connect the Techstream to the DLC3.

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

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Power Source Control / Trouble Codes.

Body Electrical > Power Source Control > Trouble Codes

(e) Check for DTCs.

CHECK FOR DTC (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (SMART ACCESS))

(a) Connect the Techstream to the DLC3.

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

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Smart Access / Trouble Codes.

Body Electrical > Smart Access > Trouble Codes

(e) Check for DTCs.

CHECK FOR DTC (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (STARTING CONTROL))

(a) Connect the Techstream to the DLC3.

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

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Starting Control / Trouble Codes.

Body Electrical > Starting Control > Trouble Codes

(e) Check for DTCs.

CLEAR DTC (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (POWER SOURCE CONTROL))

(a) Connect the Techstream to the DLC3.

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

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Power Source Control / Trouble Codes.

Body Electrical > Power Source Control > Clear DTCs

(e) Clear the DTCs.

CLEAR DTC (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (SMART ACCESS))

(a) Connect the Techstream to the DLC3.

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

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Smart Access / Trouble Codes.

Body Electrical > Smart Access > Clear DTCs

(e) Clear the DTCs.

CLEAR DTC (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (STARTING CONTROL))

(a) Connect the Techstream to the DLC3.

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

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Starting Control / Trouble Codes.

Body Electrical > Starting Control > Clear DTCs

(e) Clear the DTCs.

    Diagnosis System
    DIAGNOSIS SYSTEM DESCRIPTION (a) Smart access system with push-button start (for Start Function) data and Diagnostic Trouble Codes (DTCs) can be read through the Data Link Connector 3 (DLC3) of the ve ...

    Data List / Active Test
    DATA LIST / ACTIVE TEST DATA LIST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts. Th ...

    Other materials:

    Lexus RX (RX 350L, RX450h) 2016-2026 Owners Manual > Child safety: Riding with children
    Observe the following precautions when children are in the vehicle. Use a child restraint system appropriate for the child, until the child becomes large enough to properly wear the vehicle's seat belt. It is recommended that children sit in the rear seats to avoid accidental contact wi ...

    Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Safety Connect System: Emergency Call Switch Illumination Circuit
    WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Safety Connect System. Click here Inspect the fuses for circuits rel ...

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

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

    © 2026 Copyright www.lexusrx.net
    0.0117