Dstc VOLVO XC90 2011 Owner´s Manual

02 Instruments and controls
Instrument panel
02
61
Rear fog lightThis light indicates that the fog
light is on.
CHECK ENGINE Malfunction indicator
light
On-Board Diagnostics II (OBDII): As you drive,
a computer called "OBDII" monitors your vehi-
cle's engine, transmission, electrical and emis-
sion systems. The CHECK ENGINE light will
light up if the computer senses a condition that
potentially may need correcting. When this
happens, please have your vehicle checked by
a trained and qualified Volvo service technician
as soon as possible.
A CHECK ENGINE light may have many cau-
ses. Sometimes, you may not notice a change
in your vehicle's behavior. Even so, an uncor-
rected condition could hurt fuel economy,
emission cleanliness, and driveability.
Extended driving without correcting the cause
could even damage other components in your
vehicle.
Canadian models are equipped
with this warning light.
ABS (Anti-lock brake system)If the warning light comes on, there
is a malfunction of the ABS system
(the standard braking system will
still function). The vehicle should
be driven to a trained and qualified
Volvo service technician for inspection. See
page 149 for additional information.
DSTC systemThe Dynamic Stability and Traction
Control system (DSTC) is
explained in greater detail on page
152.
Tire pressure monitoring lightSee page 195 for more informa-
tion on this function.
Turn signal indicator – trailer (certain
models)
If you are towing a trailer, this light
will flash simultaneously with the
turn signals on the trailer. If the
light does not flash when signaling,
neither the trailer's turn signals nor
the vehicle's turn signals are functioning.

02 Instruments and controls
Information display
02
63
MessageMeaning
TIME FOR REGULAR SERVICEThis message will be displayed at 7,500 mile (12,000 km) intervals, after 750 hours of driving or after
12 months, whichever occurs first, to remind the driver that the service interval has been exceeded. The
message will be displayed for 2 minutes each time the vehicle is started until reset by a trained and qualified
Volvo service technician.
OIL LEVEL LOW – FILL OILACheck the oil level and top up if necessary, see page 215.
OIL LEVEL LOW – STOP SAFELYBStop as soon as possible and switch off the engine, check the oil level and top up if necessary, see
page 215.
OIL LEVEL LOW – STOP ENGINEBStop as soon as possible and switch off the engine, check the oil level and top up if necessary, see
page 215.
OIL LEVEL LOW – SEE MANUALBStop as soon as possible and switch off the engine, check the oil level and top up if necessary, see
page 215.
DSTC SPIN CONTROL OFFThe stability system's spin control function has been turned off, see page 152 for details.
AThe yellow warning symbol also lights up (see page 58).BThe red warning symbol also lights up (see page 58).

02 Instruments and controls
Trip computer
02

* Option/accessory, for more information, see Introduction.75 Trip computer*
G026956
READ (press to acknowledge/confirm/
erase a message)
Thumb wheel (used to scroll among the trip
computer menus)
RESET
The trip computer stores information gathered
from several systems in your vehicle and has
four menus that can be displayed in the text
window.
•Driving distance on current fuel reserve
•Average fuel consumption
•Current fuel consumption
•Average speed
•Current speed in mph (Canadian models
only)
•DSTC (see page 152 for detailed informa-
tion)
NOTE
Warning messages from the vehicle's moni-
toring systems will override the trip com-
puter function. If a warning message is dis-
played in the text window while you are
using the trip computer, you must acknowl-
edge the message by pressing button A.
Press button A again to return to the trip
computer function.
1. Trip computer controls and functionsThe trip computer functions can be accessed
by twisting INFO (B) one step at a time in either
direction. Twisting a final time returns you to
the original function.
The trip computer can be reset (current data
will be erased from system memory) by press-
ing RESET (button C).
2. Driving distance on current fuel
reserve
This function shows the approximate distance
that can be driven on the fuel remaining in the
tank. The calculation is based on average fuel
consumption during the last 20 miles (30 km)of driving and the amount of fuel remaining in
the tank when the reading was taken.
When
"----" is displayed in the text window,
refuel as soon as possible.
3. Average fuel consumptionThis value indicates fuel consumption since the
last time the trip computer was reset (by press-
ing RESET, button C). When the engine is
switched off, information on fuel consumption
is stored and remains in system memory until
the RESET (button C) is pressed again.
4. Current fuel consumptionThis value indicates the current fuel consump-
tion, based on readings taken once per sec-
ond. When the vehicle is not moving, "----" will
be displayed.
5. Average speedThis value indicates average speed since the
last time the trip computer was reset (by press-
ing RESET, button C). When the engine is
switched off, information on average speed is
stored and remains in system memory until the
RESET (button C) is pressed again.

06 Starting and driving
Stability system
06
152
Dynamic Stability Traction Control
(DSTC)
The stability system consists of a number of
functions designed help reduce wheel spin,
counteract skidding, and to generally help
improve directional stability.
NOTE
A pulsating sound will be audible when the
system is actively operating and is normal.
Traction control (TC)This function is designed to help reduce wheel
spin by transferring power from a drive wheel
that begins to lose traction to the wheel on the
opposite side of the vehicle (on the same axle).
TC is most active at low speeds.
This is one of DSTC's permanent functions and
cannot be switched off.
Spin control (SC)The spin control function is designed to help
prevent the drive wheels from spinning while
the vehicle is accelerating.
Under certain circumstances, such as when
driving with snow chains, or driving in deep
snow or loose sand, it may be advisable to
temporarily switch off this function for maxi-
mum tractive force.
Temporarily switching off Spin control1. Turn the thumbwheel (1) on the left-side
steering wheel lever until the DSTC
menu is displayed.
2.
Hold down the RESET button (2) to toggle
between
DSTC SPIN CONTROL ON orOFF.
NOTE
•The message DSTC SPIN CONTROL
OFF indicates that the stability sys-
tem's spin control function has tempo-
rarily been switched off.
•The stability control indicator light will
illuminate and remain on until spin con-
trol has been reactivated.
•The spin control function is automati-
cally enabled each time the engine is
started.
•DSTC ON indicates that all system
functions are active.
Active Yaw Control (AYC)This function helps maintain directional stabil-
ity, for example when cornering, by braking
one or more of the wheels if the vehicle shows
a tendency to skid or slide laterally.
This is one of DSTC's permanent functions and
cannot be switched off.
WARNING
The car's handling and stability characteris-
tics will be altered if the DSTC system func-
tions have been disabled.

06 Starting and driving
Stability system
06
153
DSTC-related messages in the text
window
•TRACTION CONTROL TEMPORARILY
OFF – The system has been temporarily
switched off due to high brake temperature
and will automatically switch on again
when the brakes have cooled.
•"ANTI SKID SERVICE REQUIRED" – the
system has been automatically disen-
gaged due to a fault. A trained and qualified
Volvo service technician should check the
system.
Symbols in the instrument panel
The Stability Control indicator lightThis light indicates different condi-
tions, depending on how it illumi-
nates.
The Stability Control indicator light
illuminates for approximately 2 seconds
This indicates that the system is performing a
self-diagnostic test when the ignition is
switched on.
The Stability Control indicator light
flashes
This indicates that the stability system is
actively functioning to help counteract wheel
spin and/or a skid.
The Stability Control indicator light
glows steadily
ANTI SKID SERVICE REQUIRED will be dis-
played in the text window at the same time.
A fault is indicated in the stability system.
•Stop the vehicle in a safe place and switch
off the engine.
•Restart the engine.
•If the indicator light goes out, the fault was
temporary and no further action is
required.
•If the indicator light remains on, drive to an
authorized Volvo workshop as soon as
possible to have the system checked.
The Stability Control indicator light
glows steadily
If DSTC SPIN CONTROL OFF is displayed in
the text window at the same time, this is a
reminder that spin control has been disabled
by the driver.
The warning symbolThe warning symbol glows
steadily yellow
The system has been temporarily switched off
due to high brake temperature. "TRACTIONCONTROL TEMPORARILY OFF
" will be dis-
played. The system will automatically switch
on again when the brakes have cooled.
WARNING
The stability system is intended to help
improve driving safety. It supplements, but
can never replace, the driver's judgement
and responsibility when operating the vehi-
cle. Speed and driving style should always
be adapted to traffic and road conditions.

07 Wheels and tires
General information
07
172
Introduction
Your vehicle is equipped with tires according
to the vehicle's tire information placard on the
B-pillar (the structural member at the side of
the vehicle, at the rear of the driver's door
opening).
CAUTION
Some Volvo models are equipped with an
Ultra High Performance tire and wheel com-
bination designed to provide maximum dry
pavement performance with consideration
for hydroplaning resistance. They may be
more susceptible to road hazard damage
and, depending on driving conditions, may
achieve a tread life of less than 20,000 miles
(30,000 km). Even if this vehicle is equipped
with Volvo’s advanced AWD or DSTC sys-
tem, these tires are not designed for winter
driving, and should be replaced with winter
tires when weather conditions dictate.
The tires have good road holding characteris-
tics and offer good handling on dry and wet
surfaces. It should be noted however that the
tires have been developed to give these fea-
tures on snow/ice-free surfaces.
Most models are equipped with "all-season"
tires, which provide a somewhat higher degree
of road holding on slippery surfaces than tireswithout the "all-season" rating. However, for
optimum road holding on icy or snow-covered
roads, we recommend suitable winter tires on
all four wheels.
When replacing tires, be sure that the new tires
are the same size designation, type (radial) and
preferably from the same manufacturer, on all
four wheels. Otherwise there is a risk of altering
the car's roadholding and handling characte-
ristics.
New Tires
Remember that tires are perishable goods. As
of 2000, the manufacturing week and year
(Department of Transportation (DOT) stamp)
will be indicated with 4 digits (e.g., 1510 means
that the tire illustrated was manufactured dur-
ing week 15 of 2010).
Tire ageTires degrade over time, even when they are
not being used. It is recommended that tires
generally be replaced after 6 years of normal
service. Heat caused by hot climates, frequent
high loading conditions or Ultra Violet (U.V)
exposure can accelerate the aging process.
The temporary spare
1 should also be replaced
at 6-year intervals, even if it has never been
used.
A tire's age can be determined by the DOT
stamp on the sidewall (see the illustration).
A tire with e.g., visible cracks or discoloration
should be replaced immediately.
Improving tire economy
•Maintain correct tire pressure. For the tire
pressure tables, see pages 177 and 178.
•Drive smoothly: avoid fast starts, hard
braking and tire screeching.
•Tire wear increases with speed.
•Correct front wheel alignment is very
important.
•Unbalanced wheels impair tire economy
and driving comfort.
•Tires must maintain the same direction of
rotation throughout their lifetime.
1Option or accessory on some models

09 Maintenance and servicing
Fuses 09
236* Option/accessory, for more information, see Introduction.
Fuse box in the passenger compartment, behind the plastic cover, driver's side
G028412
This fuse box is located behind the plastic
cover below the steering wheel. When replac-
ing a blown fuse, be sure to replace it with a
new one of the same color and amperage (writ-
ten on the fuse).
NoA
1Heated passenger's seat15
2Heated driver's seat15
3Horn15
4–
NoA
5Audio system10
6–
7–
8Alarm siren*5
9Break light switch feed5
10Instrument panel, climate sys-
tem, power driver's seat,
Occupant Weight Sensor10
NoA
1112-volt sockets – front and rear
seats, refrigerator* (XC90
Executive)15
12–
13–
14–
15ABS, DSTC5
16Power steering, Active Bend-
ing Lights*10

11 Specifications
Overview of information and warning symbols
11
290
Introduction
The symbols in the vehicle's various displays
are divided into three main categories:
•Warning symbols
•Indicator symbols
•Information symbols
The following tables list the most common
symbols, their meaning and the pages in this
manual that provide more detailed information.
Warning/information symbol
This symbol () lights up and glows red if
the condition is related to safety and/or driva-
bility or yellow to alert the driver to e.g., fill the
washer fluid reservoir, etc. In either case, a
message will be displayed in the instrument
panel display.
Symbols in the main instrument panel
Indicator and warning symbols
SymbolDescriptionPage
Warning59
Malfunction indi-
cator light61
SymbolDescriptionPage
Fault in the ABS
system61
Rear fog light60
Stability system
DSTC61
Trailer turn signal
indicator61
Parking brake
applied60
SRS airbag sys-
tem59
SymbolDescriptionPage
Oil pressure warn-
ing light60
Seat belt reminder59
Generator warn-
ing light60
Brake failure
warning light60
High beam indica-
tor58