2008 Toyota Tundra Owners Manual - Page 244

07 11.20 D "1" (First range): The gear is fixed in first regardless of vehicle speed and driving conditions. This range is to be used when maximum engine braking is necessary. If you attempt to downshift the transmission when it is not possible to downshift due to high vehicle speed, a warning tone sounds twice. Maximum allowable speeds To get on a highway or to pass slower traffic, maximum acceleration may be necessary. Make sure you observe the following maximum allowable speed in each range: 4.0 L V6 (1GR−FE) engine range 1 2 3 km/h 59 102 148 (mph) (36) (63) (91) Four −wheel drive models without towing package -Front drive control switch knob at "4L" range 1 2 3 4 5 km/h 23 40 58 68 68 (mph) (14) (24) (36) (42) (42) NOTICE Do not drive in the "3", "2" or "1" range when driving at high speed or climbing a gentle slope for a long time. Otherwise the transmission or engine may overheat causing damage. 4.7 L V8 (2UZ−FE) engine Without towing package range 1 2 3 With towing package range 1 2 3 km/h 58 100 147 (mph) (36) (62) (91) km/h 61 105 154 (mph) (37) (65) (95) Four −wheel drive models with towing package -Front drive control switch knob at "4L" range 1 2 3 4 5 km/h 22 38 56 64 64 (mph) (13) (23) (34) (39) (39) NOTICE Do not downshift if you are going faster than the maximum allowable speed for the next lower range. 214 2008 TUNDRA from Apr. '08 Prod. (OM34477U)