BYD SEAL U DM-i - Page 139

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The ACC system can only achieve
limited braking instead of emergency
braking.
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Metal objects, such as rail or metal
plates used in road construction, may
interfere with front mmWave radars,
making it malfunction.
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The front mmWave radar and multi-
purpose camera may be a󽗈ected by
vibrations or collisions, resulting in
compromised ACC performance. In this
case, it is recommended to contact
a BYD authorised dealer or service
provider.
Precautions
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ACC is a comfort system rather than
a safety system, obstacle detector or
collision warning system. The driver
must keep control of vehicle at all
times and be fully responsible for the
vehicle.
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ACC assists instead of replacing the
role of the driver. The driver is
responsible for abiding by tra󽗋c rules
and keeping vehicle control.
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For safety, ACC cannot be activated
when ESC is not turned on.
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The ACC is suitable for motorways and
roads in good conditions, rather than
complex urban or meandering roads.
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It is the driver's responsibility to keep
distance from the vehicle ahead. The
ACC system's vehicle distance meets
the minimum distance required in
driving environments in the country.
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Vehicle control is transferred to the
driver if the accelerator or brake pedal
is pressed with ACC active. As a result,
the ACC system cannot keep a safe
distance from the vehicle ahead.
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ACC may have no or slow responses to
a vehicle ahead that brakes or stops
suddenly, resulting in a risk of late
braking. In such cases, there will be no
take-over request.
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In some cases, such as when the
vehicle ahead is going too slow, when
lane change is too fast, or when the
safe distance from the vehicle ahead
is too short, there is no adequate
time for the system to decrease the
relative speed, In this case, the driver
must response. The system cannot give
audible or visual warnings in every
case.
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When enabled, ACC may apply braking
if a vehicle in an adjacent lane is too
close to the vehicle.
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Vehicles coming into the ACC vehicle's
lane and within the detection range of
its front mmWave radars are identi󽗉ed
as target vehicles and prompt a
response accordingly, which may lead
to hard or late braking.
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Detection may be a󽗈ected or delayed
in some environments. If the radar
cross section of the target (a
bicycle, four-wheeler, or pedestrian,
for example) is too small, the system
may not be able to establish its
distance, resulting in either late or
no response to those vehicles. In
such cases, vehicle speed must be
controlled by the driver. In addition,
detection may also be a󽗈ected or
delayed by noise or electromagnetic
interference.
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ACC cannot target vehicles with too
small contact ratio, so the driver must
keep control of the vehicle.
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When the vehicle stops as it follows
a vehicle ahead, in rare cases, the
system does not recognise the end of
the vehicle ahead but the lower end of
the target (for example, the rear axle of
a truck with a high chassis or a vehicle
bumper). In such cases, the system
cannot ensure proper stop distance, so
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