Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2019 Lexus LX 570FACTORY OEM SERVICE PROCEDURE
Customize Parameters [09/2015 - ]: Procedure
- CUSTOMIZE PRE-COLLISION SYSTEMÂ NOTE:
- When the customer requests a change in a function, first make sure that the function can be customized.
- Record the current settings before customizing.
HINT:Â
The following items can be customized.
- Customizing with the Techstream
- Connect the Techstream to the DLC3.
- Turn the engine switch on (IG).
- Turn the Techstream on.
- Enter the following menus: Body Electrical / Others or Pre-collision System / Customize.
- Select the setting by referring to the table below.OTHERS
Tester Display Description Default Setting ECU PCS Operation State Retention Setting operation state retention setting on/off OFF 0:OFF, 1:ON Driving support ECU assembly PCS Alarm Activation Distance Retention Setting 1 Selects the PCS alarm activation distance retention setting 1 OFF 0:OFF, 1:ON Driving support ECU assembly PCS Alarm Activation Distance Retention Setting 2 Selects the PCS alarm activation distance retention setting 2 ON 0:OFF, 1:ON Driving support ECU assembly PCS Alarm Activation Distance Retention Setting 3 Selects the PCS alarm activation distance retention setting 3 OFF 0:OFF, 1:ON Driving support ECU assembly PRE-COLLISION SYSTEMCustomize Setting Description Setting PCS Operation State Retention Setting Function to maintain the pre-collision system on/off setting when the engine switch is turned off and then on (IG). OFF: Not maintained (Pre-collision system always turns on)
ON: MaintainedPCS Alarm Activation Distance Retention Setting 1 Function to maintain the sensitivity setting of the pre-collision system when the pre-collision system is turned off and then on. OFF: Not maintained (Setting changes to "Mid")
ON: MaintainedPCS Alarm Activation Distance Retention Setting 2 Function to maintain the sensitivity setting of the pre-collision system when the engine switch is turned off while the pre-collision system is on. OFF: Not maintained (Setting changes to "Mid")
ON: MaintainedPCS Alarm Activation Distance Retention Setting 3 Function to maintain the sensitivity setting of the pre-collision system when the engine switch is turned off while the pre-collision system if off. OFF: Not maintained (Setting changes to "Mid")
ON: Maintained
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.