Hyundai sonata Owner's Manual page 336

While Driving
OADAS012SD OADAS010SD
• Driving on a slope
The performance of Forward Collision-
Avoidance Assist system may be
decreased while driving upward or
downward on a slope.
The front view camera or front radar
sensor recognition may not detect the
vehicle, pedestrian or cyclist in front.
This may result in unnecessary alarm
and braking or no alarm and braking
when necessary.
OADAS011SD
When the system suddenly recognizes
the vehicle, pedestrian or cyclist in
front while passing over a slope, you
may experience sharp deceleration.
Always keep your eyes forward while
driving upward or downward on a
slope, and, if necessary, depress the
brake pedal to reduce your driving
speed in order to maintain distance.
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