Caution / Notice / Hint

WARNING: This page is about a different car, the 2017 Lexus RC 350, 2017 Lexus RC 300, 2016 Lexus RC 350, 2016 Lexus RC 300, and 2015 Lexus RC 350. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

Inspect the fuses for circuits related to this system before performing the following procedure.

HINT:

Stop light switch assembly conditions can be checked using the Techstream.

Connect the Techstream to the DLC3.
Turn the engine switch on (IG).
Turn the Techstream on.
Enter the following menus: Powertrain / Engine and ECT / Data List / Gas Throttle / Stop Light Switch and ST1.

Check the Data List indication when the brake pedal is depressed and released.

Brake Pedal Operation	Stop Light Switch	ST1
Depressed	ON	ON
Released	OFF	OFF

Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.