2008 Toyota Tundra Owners Manual - Page 249

07 11.20 (b) Normal driving 1. Start the engine as instructed in "How to start the engine" on page 474 in Section 3. The transmission must be in "P" or "N". When the front drive control switch knob is in "4L" (low−speed position, four −wheel drive), the driving pattern selector setting has no effect on gear shift timing. (See "Four −wheel drive system" on page 240 in this Section for information of the front drive control lever.) 2. With your foot holding down the brake pedal, shift the selector lever to "D". When the lever is in the "D" position, the automatic transmission system will select the most suitable gear for running conditions such as normal cruising, hill climbing, hard towing, etc. Always use the "D" position for better fuel economy and quieter driving. If the engine coolant temperature is low or when the front drive control switch knob is in "4L" (low−speed position, four −wheel drive), the transmission will not shift into the overdrive gear even in the "D" position. (See "Four −wheel drive system" on page 240 in this Section for information of the front drive control.) CAUTION Never put your foot on the accelerator pedal while shifting. 3. Release the parking brake and brake pedal. Depress the accelerator pedal slowly for smooth starting. AI (Artificial Intelligence) shifting control- AI shifting control selects the most suitable shift range automatically according to the driver's operation and driving condition. AI shifting control operates automatically with the selector lever in the "D" position. When the lever is moved to the "S" position, this function will be cancelled. D Automatic shifting point change control: The most suitable shift range is selected depending on the driver's accelerator pedal operation and vehicle condition. (c) Driving in "S" mode The shift range position can be changed in "S" mode. When the selector lever is in the "S" position, the shift range position can be switched between "6" (sixth range) and "1" (first range) by shifting the selector lever to the "+" (up) or "−" (down) position. By shifting the lever to the "+" (up) position and holding it for at least 1 second, the highest shift range position can be obtained. However, it cannot be changed while cruise control is activated. When the selector lever is shifted to the "S" position, shift range position "4" (fourth range) or "5" (fifth range) is selected depending on the vehicle speed. D Shifting control on the slope: On inclines, you can drive smoothly with reduced shifting quantity. On declines, the vehicle will shift down automatically to obtain optimum engine braking and reduce the driver's foot braking load. 219 2008 TUNDRA from Apr. '08 Prod. (OM34477U)