Automatic High Beams (Ahb) - Toyota PRIUS C 2019 Quick Reference Manual

Automatic High Beams (AHB)

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AHB is a safety system designed to help drivers see more of what's ahead at nighttime
and reduce glare for oncoming drivers. When enabled, AHB uses an in-vehicle camera
to help detect the headlights of oncoming vehicles and tail lights of preceding vehicles,
then automatically switches between high and low beams as appropriate to provide
the most light possible and enhance forward visibility. By using high beams more
frequently, the system may allow earlier detection of pedestrians and obstacles.
Refer to the Toyota Owner's Manual for additional information on AHB operation,
settings adjustments, limitations, and precautions before attempting to use it.
ACTIVATING THE AHB SYSTEM
With the engine switch in IGNITION ON mode and headlight switch turned to
position, push lever away from you.
The will come on when the headlights are turned on automatically to indicate
that the system is active.
Note: Pull the lever back toward you to turn the AHB system off.
The will turn off and the high beam indicator turns on.
CONDITIONS WHERE AHB WILL TURN ON/OFF AUTOMATICALLY
When all of these conditions are met, high beams will be automatically turned on
(after approximately 1 second):
• Vehicle speed is above approximately 21 mph (33 km/h).
• The area ahead of the vehicle is dark.
• There are no oncoming or preceding vehicles with headlights or tail lights turned on.
• There are few streetlights on the road ahead.
If any of these conditions occur, high beams will be automatically turned off:
• Vehicle speed drops below approximately 17 mph (27 km/h).
• The area ahead of the vehicle is not dark.
• Oncoming or preceding vehicles have headlights or tail lights turned on.
• There are many streetlights on the road ahead.
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