Toyota Tundra Owners Manual: Four-wheel drive system

Toyota Tundra Owners Manual / Driving / Using the driving support systems / Four-wheel drive system

Summary of functions

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

Using the driving support systems

"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.
"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.
"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.

WARNING

■Shifting the front-wheel drive control switch from "2WD" to "4H" while driving Never operate the front-wheel drive control switch if the wheels are slipping.

Stop the slipping or spinning before shifting.

■When the vehicle is parked If the shift lever is moved before the "4LO" indicator turns on/off, the transfer mode may not be shifted completely. The transfer mode disengages both the front and rear driveshafts from the powertrain and allows the vehicle to move regardless of the shift position. (At this time, the indicator blinks and the buzzer sounds.) Therefore, the vehicle is free to roll even if the automatic transmission is in P. You or someone else could be seriously injured. You must complete the shifting of the transfer mode before placing transmission in P.

BSM (Blind Spot Monitor)

AUTO LSD system

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