Toyota Tundra Owners Manual: Four-wheel drive system

Summary of functions

Use the front-wheel drive control switch to select the following transfer modes:

1. "2WD" (high speed position, two-wheel drive)
   Use this for normal driving on dry hard-surfaced roads. This position gives greater economy, quietest ride and least wear.
2. "4H" (high speed position, four-wheel drive)
   Use this for driving only on tracks that permit the tires slide, like off-road, icy or snow-covered roads. This position provides greater traction than two-wheel drive.

   The "4HI" indicator will come on.

3. "4L" (low speed position, four-wheel drive)
   Use this for maximum power and traction. Use "4L" for climbing or descending steep hills, off-road driving, and hard pulling in sand, mud or deep snow.

   The "4LO" indicator will come on.

Shifting between "2WD" and "4H"

■ Shifting from "2WD" to "4H"

1. Reduce vehicle speed to less than 62 mph (100 km/h).

2. Turn the front-wheel drive control switch to "4H".

The "4HI" indicator will come on.

■ Shifting from "4H" to "2WD"

1. Reduce vehicle speed to less than 62 mph (100 km/h).

2. Turn the front-wheel drive control switch to "2WD".

The "4HI" indicator will go off.

Shifting between "4H" and "4L"

■ Shifting from "4H" to "4L"

1. Stop the vehicle completely and continue to depress the brake pedal.

2. Shift the shift lever to N.

3. Push and turn the front-wheel drive control switch to "4L".

The "4LO" indicator will come on.

■ Shifting from "4L" to "4H"

1. Stop the vehicle completely and continue to depress the brake pedal.

2. Shift the shift lever to N.

3. Push and turn the front-wheel drive control switch to "4H".

The "4LO" indicator will go off.

■When the front-wheel drive control switch is shifted to "4L" VSC is automatically turned off.

■If the "4HI" indicator flashes The transfer mode may not successfully change. Drive straight ahead while accelerating or decelerating, or drive in reverse.

■If the "4LO" indicator continues to flash The transfer mode may not successfully change. Operate the front-wheel drive control switch again.

■If the "4LO" indicator continues to flash and a buzzer sounds The shift lever is not in N and/or the vehicle is moving. Stop the vehicle completely, shift the shift lever to N and make sure that the indicator stops flashing.

■If the "4HI" or "4LO" indicator flashes rapidly There may be a malfunction in the four-wheel drive system. Have the vehicle inspected by your Toyota dealer immediately.

■Four-wheel drive usage frequency You should drive in four-wheel drive for at least 10 miles (16 km) each month.

This will assure that the front drive components are lubricated.