Ford Galaxy / Ford S-MAX. Manual — part 709

Installation

1. To install, reverse the removal procedure.

2. Refer to:

Proximity Warning Radar Unit Adjustment

(413

Warning Devices, General Procedures).

Parking Aid - Parking Aid

S-MAX/Galaxy 2006.5 (02/2006-)

Print

Description and Operation

Component location

Description

Rear outer parking aid sensor

Rear outer parking aid sensor holder

Front parking aid speaker

Front inner parking aid sensor holder

Front inner parking aid sensor

Front outer parking aid sensor holder

Front outer parking aid sensor

Parking aid switch (with light emitting diode (LED))

Parking aid module (with rear parking aid speaker)

Rear inner parking aid sensor

Rear inner parking aid sensor holder

Description and operation

Only one level of parking aid system is installed to the vehicle, a front and rear system.

Item

1

2

3

4

5

6

7

8

9

10

11

Part Number

-

-

-

-

-

-

-

-

-

-

-

The parking aid system provides an audible warning to the driver when any obstacles are in
the path of the vehicle during forward or reverse parking manoeuvres. The system consists
of four ultrasonic parking aid sensors in each bumper, a parking aid module, parking aid
speaker(s) and a parking aid switch.

At low speeds, the parking aid module uses the parking aid sensors to monitor the area
around the front and rear bumpers. If an object is detected within a monitored area, the
parking aid module outputs a warning tone using the parking aid speakers. Objects very
close to the ground may not be detected, but because of their low height will not cause
damage to the vehicle.

The parking aid module communicates through discrete signals with the parking aid
speakers. The parking aid speakers output the applicable warning tones when an object is
detected. The medium speed controller area network (CAN) bus is used to collect vehicle
data from other vehicle systems.

When the parking aid module activates the system, the parking aid switch LED is
illuminated. The parking aid module processes signals received from the sensors to
determine if there is an object within the detection range of the parking aid sensors.

In the combined mode, the parking aid sensor(s) emit a series of ultrasonic impulses and
switch to receiver mode to receive the echo reflected by an obstacle within the detection
range. The received echo signals are amplified and converted from an analogue signal to a
digital signal by the sensor. The digital signal is passed to the parking aid module and
compared with pre-programmed data stored in an EEPROM within the parking aid module.
The parking aid module receives this data through the signal line from the parking aid
sensor and calculates the distance from the object using the elapsed time between the
transmitted and received impulse. The duration of the impulse duration is determined by
the parking aid module, with the parking aid sensor controlling the frequency of the impulse
output.

In receiver mode, the parking aid sensor receives impulses that were emitted by adjacent
parking aid sensors. The parking aid module uses this information to determine the
distance of the object.

If no objects are detected there are no further warning tones. If an object is detected,
repeated audible tones are emitted from either parking aid speaker(s) as appropriate. The
time delay between the tones decreases as the distance between the object and the vehicle
decreases, until at approximately 250 mm (10 inches), the audible tone becomes
continuous.

If, after the initial detection of an object, there is no decrease in distance between the
object and the vehicle, the audible warning tones remain constant if the object is detected
by a central parking aid sensor or stops after 3 seconds if the object is detected by a corner
parking aid sensor.

The parking aid module continues to monitor the distance and will resume the warning
tones if a decrease in distance is detected.

The parking aid system is activated when the driver presses the parking aid switch (vehicle
speed below 16 km/h (10 mph) and the parking aid system not active) or selects reverse
gear.

Front and rear parking aid sensors are activated and deactived together.

The parking aid system operation is disabled when the parking aid switch is pressed while
the parking aid system is active or the ignition is switched off. The parking aid system
operation is also disabled if the vehicle forward speed exceeds 16 km/h (10 mph).

The parking aid system can detect when a trailer is connected to the vehicle by a message
output on the medium speed CAN bus from the trailer. When the parking aid module
detects that a trailer is connected to the vehicle, the rear parking aid sensors are disabled
to prevent constant warnings due to the close proximity of the trailer.

Front parking aid speaker

The front parking aid speaker is located behind the instrument panel close to the
instrument cluster.

Parking aid module

The parking aid module has three connectors which provide for power, ground and CAN bus
connections, front and rear parking aid sensors, parking aid switch, LED and parking aid
speakers.

The medium speed CAN bus connections provide for the receipt of the following information
from other systems:

ABS (anti-lock brake system) module - Road speed signal
Central junction box (CJB) - Reverse gear engaged signal, vehicle configuration
parameters, carmode and powermode
Powertrain control module (PCM) - Vehicle speed signal
Transmission control unit - Gear lever position (automatic transmission)
Trailer module - Trailer connection status

The parking aid module carrys out self-check routines and when the parking aid system is
active, checks the parking aid sensor wiring for short or open circuits. If a concern is
detected, a diagnostic trouble code (DTC) is stored in a memory in the parking aid module
and the front and rear parking aid sensors will be disabled until the DTC is cleared and the
ignition cycled. The driver is made aware of any concern condition by the parking aid switch
LED flashing and a continuous warning tone being emitted for 3 seconds at the start of
ignition cycle, in place of the normal short tones when the parking aid system is functioning
normally. DTCs can be read using the worldwide diagnosis system (WDS) through the data
link connector (DLC).

In addition, the rear parking aid speaker is integrated to the parking aid module housing.

Rear parking aid sensor