Ford F-150 2018 Owner's Manual page 235

When you believe your vehicle is properly
parked, or you hear a solid tone
accompanied by a display message, bring
your vehicle to a complete stop.
Troubleshooting the System
Symptom
The system does not look for a
space.
The system does not offer a
parking space.
The system does not position
the vehicle correctly.
F-150 (TFC) Canada/United States of America, enUSA, Edition date: 201705, First Printing
Parking Aids
When the Active Park Assist maneuver is
complete, the system displays a message
and a tone sounds.
Note: You are responsible for checking your
parked vehicle and making any necessary
corrections before leaving your vehicle.
You may have the traction control system switched off.
The transmission is in reverse (R). Your vehicle must
be moving forward to be able to detect a parking space.
The sensors may be covered. For example, snow, ice
or dirt buildup. Covered sensors can affect how the
system functions.
There is not enough room in the parking space for your
vehicle to safely park.
There is not enough space for the parking maneuver on
the opposite side of the parking space.
The parking space is more than 5 ft (1.5 m) or less than
16 in (0.4 m) away.
Your vehicle speed is greater than 22 mph (35 km/h).
You recently disconnected or replaced the battery. After
a battery disconnect, you must drive your vehicle on a
straight road for a short period of time.
Your vehicle is rolling in the opposite direction of the
current transmission position. For example, rolling
forward when in reverse (R).
An irregular curb along the parking space prevents the
system from aligning your vehicle properly.
Improperly parked vehicles or objects are boarding the
space.
Your vehicle is too far past the parking space. The
system performs best when you drive the same
distance past the parking space.
232
Possible Cause