Get Driving -> AHB (Automatic High Beam) Guide for Toyota 4 Runner SUV Fifth Generation (2010-2024)

217

4-3. Operating the lights and wipers

AHB (Automatic High Beam)

The Automatic High Beam uses a camera sensor located behind

the upper portion of the windshield to assess the brightness of

the lights of vehicles ahead, streetlights, etc., and automatically

turns the high beams on or off as necessary.

WARNING

■Limitations of the Automatic High Beam

Do not overly rely on the Automatic High Beam. Always drive safely, taking

care to observe your surroundings and turning the high beams on or off

manually if necessary.

■To prevent incorrect operation of the Automatic High Beam system

Do not overload the vehicle.

Activating the Automatic High Beam

Push the lever away from you

with the headlight switch in the

position.

Press the Automatic High

Beam switch.

The Automatic High Beam indica-

tor will come on when the system

is operating.

4RUNNER (U)

218

4-3. Operating the lights and wipers

Turning the high beam on/off manually

■ Switching to low beam

Pull the lever to the original

position.

The Automatic High Beam indi-

cator will turn off.

Push the lever away from you to

activate the Automatic High

Beam system again.

■ Switching to high beam

Press the Automatic High

Beam switch.

The Automatic High Beam indi-

cator will turn off and the high

beam indicator will turn on.

Press the switch to activate the

Automatic High Beam system

again.

4RUNNER (U)

219

4-3. Operating the lights and wipers

■Conditions to turn the high beams on/off automatically

●When all of the following conditions are met, the high beams will be turned

on automatically (after approximately 1 second):

• The vehicle speed is approximately 21 mph (34 km/h) or more.

• The area ahead of the vehicle is dark.

• There are no vehicles ahead with headlights or tail lights turned on.

• There are few streetlights on the road ahead.

●If any of the following conditions is met, the high beams will turn off automat-

ically:

• The vehicle speed is below approximately 17 mph (27 km/h).

• The area ahead of the vehicle is not dark.

• Vehicles ahead have their headlights or tail lights turned on.

• There are many streetlights on the road ahead.

■Camera sensor detection information

●The high beams may not be automatically turned off in the following situa-

tions:

• When a vehicle suddenly appears from around a curve

• When the vehicle is cut in front of by another vehicle

• When vehicles ahead cannot be detected due to repeated curves, road

dividers or roadside trees

• When vehicles ahead appear in a faraway lane on a wide road

• When the lights of vehicles ahead are not on

●The high beams may be turned off if a vehicle ahead that is using fog lights

without its headlights turned on is detected.

●House lights, street lights, traffic signals, and illuminated billboards or signs

and other reflective objects may cause the high beams to change to the low

beams, or the low beams to remain on.

●The following factors may affect the amount of time taken for the high

beams to turn on or off:

• The brightness of the headlights, fog lights, and tail lights of vehicles

ahead

• The movement and direction of vehicles ahead

• When a vehicle ahead only has operational lights on one side

• When a vehicle ahead is a two-wheeled vehicle

• The condition of the road (gradient, curve, condition of the road surface,

etc.)

• The number of passengers and amount of luggage in the vehicle

●The high beams may turn on or off unexpectedly.

●Bicycles or similar vehicles may not be detected.

●In the following situations the system may not be able to correctly detect the

surrounding brightness level. This may cause the low beams to remain on

or the high beams to flash or dazzle pedestrians or vehicles ahead. In such

a case, it is necessary to manually switch between the high and low beams.

4RUNNER (U)

220

4-3. Operating the lights and wipers

• When driving in inclement weather (heavy rain, snow, fog, sandstorms,

etc.)

• When the windshield is obscured by fog, mist, ice, dirt, etc.

• When the windshield is cracked or damaged

• When the camera sensor is deformed or dirty

• When the temperature of the camera sensor is extremely high

• When the surrounding brightness level is equal to that of headlights, tail

lights or fog lights

• When headlights or tail lights of vehicles ahead are turned off, dirty,

changing color, or not aimed properly

• When the vehicle is hit by water, snow, dust, etc. from a preceding vehi-

cle

• When driving through an area of intermittently changing brightness and

darkness

• When frequently and repeatedly driving ascending/descending roads, or

roads with rough, bumpy or uneven surfaces (such as stone-paved

roads, gravel roads, etc.)

• When frequently and repeatedly taking curves or driving on a winding

road

• When there is a highly reflective object ahead of the vehicle, such as a

sign or mirror

• When the back of a preceding vehicle is highly reflective, such as a con-

tainer on a truck

• When the vehicle's headlights are damaged or dirty, or are not aimed

properly

• When the vehicle is listing or titling due to a flat tire, a trailer being towed,

etc.

• When the headlights are changed between the high beams and low

beams repeatedly in an abnormal manner

• When the driver believes that the high beams may be flashing or dazzling

pedestrians or other drivers

■Temporarily lowering sensor sensitivity

The sensitivity of the sensor can be temporarily lowered.

Turn the engine switch off while the following conditions are met.

• The headlight switch is in

• The headlight switch lever is in the high beam position.

• Automatic High Beam switch is on.

Turn the engine switch to the IGNITION ON mode.

Within 60 seconds after , repeat pulling the headlight switch lever to the

original position then pushing it to the high beam position quickly 10 times,

then leave the lever in the high beam position.

If the sensitivity is changed, the Automatic High Beam indicator will turn on

and off 3 times.

Automatic High Beam (headlights) may turn on even when the vehicle is

stopped.

4RUNNER (U)

Driving -> AHB (Automatic High Beam) for Your Toyota 4 Runner SUV Fifth Generation (2010-2024)

Related Topics

Driving

Popular Owner Manuals

Latest Owner Manuals