2010 VOLVO XC90 wiring

06 Starting and driving
Front/rear park assist*
06

* Option/accessory, for more information, see Introduction.149
Front/rear park assist
The park assist system is designed to assist
you when driving into parking spaces, garages,
etc. It utilizes four ultrasound sensors located
in one or both bumpers to measure the dis-
tance to a vehicle, object, or a person who may
be close to the front or rear of your vehicle.
Park assist is available in two versions:
•Rear bumper only
•Front and rear bumpers
WARNING
Park Assist is an information system, NOT a
safety system. This system is designed to
be a supplementary aid when parking the
vehicle. It is not, however, intended to
replace the driver's attention and judge-
ment.
Function
The system is activated automatically when the
vehicle is started. The indicator light in the but-
ton in the center console illuminates.
•The front park assist system is active from
the time the engine is started until the vehi-
cle exceeds a speed of approximately
10 mph (15 km/h). It is also active when the
vehicle is backing up.
•Rear park assist is active when the engine
is running and reverse gear has been
selected.
Rear park assistThe distance monitored behind the vehicle is
approximately 5 ft (1.5 m). The signal comes
from the rear speakers.
The system must be deactivated when towing
a trailer, carrying bicycles in a rear-mounted
carrier, etc, which could trigger the rear park
assist system's sensors.
NOTE
Rear park assist is deactivated automati-
cally when towing a trailer if Volvo genuine
trailer wiring is used.
Front park assistThe distance monitored in front of the vehicle
is approximately 2.5 ft (0.8 m). The audible sig-
nal comes from the audio system's front
speakers.
•It may not be possible to combine auxiliary
headlights and front park assist since
these lights could trigger the system's sen-
sors.
Activating/deactivating park assist
The system is activated automatically when the
vehicle is started.
•Press the Park assist button on the center
console (see page 60) to temporarily deac-
tivate the system(s). The indicator light in
the button will go out when the system has
been deactivated.
•Park assist will be automatically reactiva-
ted the next time the engine is started, or if
the button is pressed (the indicator light in
the button will illuminate).

06 Starting and driving
Towing a trailer
06
155
WARNING
•Bumper-attached trailer hitches must
not be used on Volvos, nor should
safety chains be attached to the
bumper.
•Trailer hitches attaching to the vehicle
rear axle must not be used.
•Never connect a trailer's hydraulic
brake system directly to the vehicle
brake system, nor a trailer's lighting
system directly to the vehicle lighting
system. Consult a trained and qualified
Volvo service technician for correct
installation.
•When towing a trailer, the trailer's safety
wire must be correctly fastened to the
hole or hook provided in the trailer hitch
on the vehicle. The safety wire should
never be fastened to or wound around
the drawbar ball.
Smoother starts with a trailerModels equipped with the V8-engine and the
6-speed automatic transmission have a built-
in function that reduces acceleration slightly in
first gear when the vehicle is towing a trailer.
This is done to help avoid wheel spin and to
make starting off smoother.
•This function is activated when the trailer's
electrical connector is plugged into theelectrical socket mounted near the trailer
hitch.
•The function is automatically deactivated
when the trailer's wiring is disconnected
from the socket. The vehicle will then
accelerate normally.
NOTE
Since this function is activated when a con-
nector is plugged into the electrical socket
near the trailer hitch, it will be activated by
any electrical equipment (e.g. bicycle racks
with lighting, etc) that is plugged in, and will
remain active until the equipment is unplug-
ged from the socket.
LevelingIf your vehicle is equipped with automatic lev-
eling, the rear suspension always retains the
correct ride height regardless of the load.
•The system adjusts the rear suspension to
the correct level after the vehicle has been
driven a short distance.
•When the vehicle is stationary, the rear
suspension lowers, which is normal.

07 Wheels and tires
Tire Sealing System
07
184* Option/accessory, for more information, see Introduction.
Introduction
Certain models are equipped with a tire sealing
system* that enables you to temporarily seal a
hole in the tread surface and re-inflate a flat tire,
or to adjust a tire’s inflation pressure.
The system consists of an air compressor, a
container for the sealing compound, wiring to
connect the system to the vehicle’s electrical
system via one of the 12-volt sockets, and a
hose used to connect the system to the tire’s
inflation valve.
The 12-volt sockets are located on the rear side
of the center console (in the rear seat) and in
the cargo area.
Accessing the tire sealing systemThe tire sealing system is stowed under the
floor of the cargo area. To access it:
1. Fold up or remove any protective floor cov-
ering or carpet.
2. Open the floor hatch.
3. Lift out the tire sealing system.
NOTE
•The tire sealing system is only intended
to seal holes on the tire’s tread area, not
the sidewall.
•Tires with large holes or tears cannot be
repaired with the tire sealing system.
•After use, stow the tire sealing system
properly to help prevent rattling.
WARNING
•After using the tire sealing system, the
vehicle should not be driven farther than
approximately 120 miles (200 km).
•Have the tire inspected by a trained and
qualified Volvo service technician as
soon as possible to determine if it can
be permanently repaired or must be
replaced.
•The vehicle should not be driven faster
than 50 mph (80 km/h) while using a tire
that has been temporarily repaired with
the tire sealing system.
•After using the tire sealing system, drive
carefully and avoid abrupt steering
maneuvers and sudden stops.
Tire sealing system–overview
G020400
Speed limit sticker
On/Off switch
Electrical wire
Bottle holder (orange cover)
Protective hose cover
Air release knob
Hose
Bottle with sealing compound
Air pressure gauge

09 Maintenance and servicing
Replacing bulbs09

221 Replacing bulbs in the taillight cluster
G027077
1. Switch off all lights and turn ignition key to
position 0.
2. Fold down the lower section of the tailgate,
and fold up the rear section of the cargo
area floor.
3. If the vehicle is equipped with the optional
grocery bag holder, detach the holder's
bands.
4. Remove the corner panel.
5. Open the cover in the side panel by pulling
the tab upward/outward.
6. Loosen the bolts.
7. Pull the entire tail light housing straight out.8. Disconnect the wiring.
9. Place the tail light housing on a soft cloth
to avoid scratching the lens.
10. Turn the lamp holder(s) counterclockwise
and pull out.
11. Turn signal, back-up light, brake light
bulbs: Turn the bulb counterclockwise and
remove it.
12. Parking light bulbs: Pull the bulb straight
out.
13. Insert a new bulb.
14. Place the lamp holder in the groove and
turn clockwise.15. Press wiring back into place.
16. Align the tail light housing with the holes for
the retaining bolts and press it into place.
17. Tighten the retaining bolts.
18. Reinsert the side and corner panels.

09 Maintenance and servicing
Fuses09

* Option/accessory, for more information, see Introduction.233
NoA
14Subwoofer*, rear air condition-
ing system *15
15–
16–
17Accessory audio5
18–
19Rear window wiper15
20Trailer wiring (15-feed)*20
21–
22–
23Park assist7,5
24–
25–
26Park assist*5
27Main fuse: trailer wiring, park
assist, All Wheel Drive30
28Central locking system15
29Driver's side trailer lighting:
parking lights, turn signal*25
NoA
30Passenger's side trailer light-
ing: brake light, fog light, turn
signal*25
31Main fuse: fuses 37 and 3840
32–
33–
34–
35–
36–
37Heated rear window20
38Heated rear window20