Ford Mondeo Owner's Manual page 78

System detection and alerts
The system will trigger the alert for vehicles
that enter the blind spot zone from the rear
or merge from the side. Vehicles that you
pass, or vehicles that enter the blind spot
zone from the front, will only trigger the
alert after the vehicle has remained in the
blind spot zone for a short period of time.
Note: Vehicles that pass through the blind
zone quickly (typically less than 2 seconds)
will not trigger the alert.
The system consists of two radar sensors
each located behind the rear wheels
hidden behind the bumpers.
CAUTIONS
Do not place items such as bumper
stickers in this area.
Repairs to these areas using body filler
will affect the performance of the
system.
E124741
Detection limitations
There may be certain instances where
vehicles entering and exiting the blind spot
zones may not be detected.
Instances which may cause non-detection:
Debris build up on the rear bumper
panels in the area of the sensors.
Certain manoeuvring of vehicles
entering and exiting the blind zone.
Windows and Mirrors
76
Vehicles passing through the blind zone
at high speed.
Severe weather conditions.
Several vehicles passing through the
blind zone following each other closely.
False alerts
Note: False alerts are temporary and will
self correct.
There may be certain instances when the
system will alert with no vehicle present in
the blind zone.
Circumstances where false alerts may
occur:
Road guardrails.
Motorway concrete walls.
Construction areas.
Sharp turns around a building.
Bushes and trees.
Cyclists and motorcyclists.
Coming to a stop with a vehicle directly
behind but very close.
Turning the system on and off
Note: The on or off position will remain until
manually changed.
You can turn the system on and off using
the information display. See Information
Displays (page 84).
When you turn the system off no further
alerts will be received. The BLIS warning
indicator will illuminate. See Warning
Lamps and Indicators (page 80).
Detection errors
Note: The alert indicator in the mirror will
not illuminate.