Ford 2015 Focus Owner's Manual page 167

The system uses radar sensors which are
located behind the bumper fascia on each
side of your vehicle. Do not allow mud,
snow or bumper stickers to obstruct these
areas, this can cause degraded system
performance.
If the system detects a degraded
performance condition, a message warning
of a blocked sensor or low visibility will
appear in the information display along
with a warning indicator. You can clear the
information display warning but the
warning indicator will remain illuminated.
When you remove a blockage, you can
reset the system in two ways:
• While driving, the system detects at
least two objects.
• You cycle the ignition from on to off
and then back on.
If the blockage is still present after the key
cycle and driving in traffic, check again for
a blockage.
Focus (CEW) Vehicles Built From: 16-02-2015, CG3630en enGBR, Edition date: 01/2015, First Printing
Driving Aids
Reasons for messages being displayed
The radar
surface is
dirty or
obstructed
The radar
surface is
not dirty or
obstructed
Heavy rain-
fall or
snowfall
interferes
with the
radar
signals
Detection Limitations
There may be instances where the system
will not always detect vehicles entering
and exiting the blind spot zone.
Instances which may cause non-detection:
• Debris build up on the rear bumper
panels in the area of the sensors.
• Certain maneuvering of vehicles
entering and exiting the blind spot
zone.
• Vehicles passing through the blind spot
zone at high speed.
• Severe weather conditions.
• Several vehicles passing through the
blind spot zone following each other
closely.
165
Clean the fascia area in front
of the radar or remove the
obstruction.
Drive normally in traffic for
a few minutes to allow the
radar to detect passing
vehicles so it can clear the
blocked state.
No action required. The
system automatically resets
to an unblocked state once
the rainfall or snowfall rate
decreases or stops. Do not
use the Blind Spot Informa-
tion System or Cross Traffic
Alert in these conditions.