2005 Lexus RX 330 Owners Manual - Page 467

STARTING AND DRIVING With automatic transmission (standard type) - Even if you downshift from "D" to "4" in the conventional cruise control mode, engine braking will not be enabled because this mode is not cancelled. To decrease the vehicle's speed, reset to a slower speed with the cruise control lever or depress the brake pedal. If you use the brake pedal, cruise control is cancelled. With automatic transmission (multi−mode type) - Even if you downshift from "D" or "5" (fifth range) to "4" (fourth range) in the conventional cruise control mode, engine braking will not be enabled because this mode is not cancelled. To decrease the vehicle's speed, reset to a slower speed with the cruise control lever or depress the brake pedal. If you use the brake pedal, cruise control is cancelled. (f) Resuming the preset speed If the preset speed is cancelled by pulling the lever, by depressing the brake pedal or vehicle stability control activation, pushing the lever up in the "+ RES" direction will restore the speed set prior to cancellation. However, once the vehicle speed falls below about 40 km/h (25 mph), the preset speed will not be resumed. (g) Conventional cruise control mode failure warning If there is trouble in the conventional cruise control mode, the "CRUISE" indicator light in the instrument cluster flashes, the master warning light comes on and the alarm sounds, the warning code "E3" will appear on the display. If a system malfunction is detected when the conventional cruise control mode is in the ready mode or operating, the master warning light comes on, an alarm sounds and the above code appears. If this code appears, press the "ON−OFF" button to turn the system off and then push it again to turn it on. If the setting still cannot be made or the same code appears again, the system might have malfunctioned. Although there is no problem to continue driving, please contact your Lexus dealer. 436