2005 Lexus LS 430 Owners Manual - Page 17

J Operation Procedure F Acceleration/Deceleration To accelerate: Depress the accelerator pedal. (When you release the accelerator pedal, follow-up cruising or fixed speed cruising resumes.) If there was no vehicle ahead, the vehicle will accelerate gradually to the preset speed. At this time, depressing the accelerator pedal will accelerate quickly. To decelerate: Depress the brake pedal. (Even when you release the brake pedal, dynamic laser cruise control does not return to follow-up cruising or fixed speed cruising. Press the control lever upward to resume follow-up-cruising or fixed speed cruising.) F Changing the preset speed Using the control lever:
Press the control lever upward or downward. D Press the control lever upward in the "+RES" direction to increase the preset speed. The displayed speed will increase in increments of 5 mph (for U.S.A) or 5 km/h (for Canada). D Press the control lever downward in the "- SET" direction to decrease the preset speed. The displayed speed will decrease in decrements of 5 mph (for U.S.A.) or 5 km/h (for Canada).  Release the control lever when the multi-information display shows the desired preset speed. Using the accelerator and brake pedals:
When using the accelerator pedal, you need to cancel the preset speed once.  Depress the accelerator or brake pedal to attain the desired speed.  Press the control lever downward in the "- SET" direction and release the lever. 16 Dynamic Laser Cruise Control