Troubleshooting
85
A vehicle (in front of your vehicle) is not detected, is detected later or detection is
lost quickly.
Is the vehicle in front stopped, moving slowly relative to your vehicle or moving
extremely slowly?
Detection of stopped vehicles, vehicle moving slowly relative to your vehicle, and
vehicles moving extremely slowly may be difficult.
Is the windshield dirty or fogged?
If the windshield is dirty or fogged, it may not be possible to detect object or vehi-
cles. Clean off the dirt or fog from the windshield, and then try using the system
again.
Is the vehicle in front far away?
The maximum detection distance of EyeSight’s stereo cameras is approximately
265 ft (80 m). Detection is not possible if the vehicle is farther away.
Is the vehicle on a curve?
The detection range is limited in the left and right directions to approximately a 25-
degree arc from the vehicle centerline when the cameras are properly aimed.
Is the vehicle on a road with repeated uphill and downhill grades (such as an over-
pass), or on a banked road?
The detection range is limited in the up and down directions.
Did the vehicle detected in front change?
Detection may be delayed after the vehicle in front has changed.
Have water, snow or other substances been kicked up by the vehicle in front as it
drives?
When water or snow have been kicked up, it may not be possible to detect the
vehicle in front.
Control is activated even though no vehicle in front is detected?
Is there a vehicle in the neighboring lane?
Depending on the road conditions, vehicles in neighboring lanes may be detected
as well as a vehicle directly in front.
Are you driving on or near a curve?
When driving on a curve, braking control may be activated in response to guard
rails, the angle of the steering wheel, or roadside structures.
The Lead Vehicle Start Alert activates, even though there is no vehicle in front.
Depending on surrounding objects, traffic environment and weather, the Lead
Vehicle Start Alert may issue a warning in response to objects other than a vehicle
that appear in front of your vehicle.
Troubleshooting
86
EyeSight does not restart after a temporary stop.
Is Vehicle Dynamics Control turned off?
EyeSight cannot be activated when Vehicle Dynamics Control is off.
Is the X-mode turned on?
EyeSight cannot be activated when the X-mode is turned on.
Are you driving in the rain with old wipers or is there an oily film on the windshield?
Replace the wipers with new ones, or clean the oily film off the windshield.
Is your vehicle subject to sunlight from the front (sunset or sunrise, etc.) or to
bright headlights from oncoming vehicles at nighttime?
In these cases, EyeSight may temporarily stop operating.
The timing of the “brake more” warning is sometimes earlier and sometimes later
than what seems to be normal operation.
The “brake more” warning sounds when the system determines that more braking
is necessary, based on conditions such as the distance from the vehicle in front
and the difference in speed. As a result, timing may vary depending on how the
brake of the vehicle in front is applied.
Acceleration is sometimes slower and sometimes faster when the vehicle in front
is no longer detected.
Depending on the timing of when the detection of the vehicle in front is lost,
EyeSight’s ability to react may be slower, causing the start of acceleration to feel
delayed and braking time to feel longer than what seems to be normal operation.
Which SI-DRIVE mode is selected?
The acceleration varies due to the characteristics change of Adaptive Cruise Con-
trol depending on which mode is selected.
Cruise control is canceled automatically.
Did you perform one of the following operations?
xManually depressing the brake pedal
xPressing the CANCEL switch for cruise control
xOperating the paddle shift lever
xShifting the selector lever to the position
xPressing the Vehicle Dynamics Control OFF switch (VDC OFF indicator
illuminates.)
xPressing the X-mode switch (X mode indicator illuminates.)
Has the EyeSight system temporarily stopped?
M
Troubleshooting
87
A noise occurs when automatic braking control activates.
This is the sound of the automatic braking control operating.
Braking control activates frequently when driving in heavy traffic.
Unlike a human driving, the EyeSight system performs control based only on the
actions of vehicles or objects in front. As a result, acceleration and deceleration
may be more frequent. If it is difficult to maintain a consistent following distance,
do not use Adaptive Cruise Control.
A small jolt occurs when cruise control is used on a downhill grade.
Downshift control occasionally occurs on downhill grades, and may produce a
small jolt if it activates.
