2012 VOLVO XC90 warning lights

01 Safety
Occupant Weight Sensor01

29
WARNING
•If a fault in the system is detected and
indicated as explained, be aware that
the passenger's side front airbag will
not deploy in the event of a collision.
•In this case, the safety systems and
Occupant Weight Sensor should be
inspected by a trained and qualified
Volvo service technician as soon as
possible.
WARNING
•Never try to open, remove, or repair any
components in the OWS system. This
could result in system malfunction.
Maintenance or repairs should only be
carried out by a trained and qualified
Volvo service technician.
•The front passenger's seat should not
be modified in any way. This could
reduce pressure on the seat cushion,
which might interfere with the OWS sys-
tem's function.
The OWS is designed to disable (will not inflate)
the passenger's side front airbag when a rear
facing infant seat, a forward-facing child
restraint, or a booster seat is detected. The
PASSENGER AIRBAG OFF indicator lamp willilluminate and stay on to remind you that the
passenger's side front airbag is disabled (see
the following table).
Passeng-
er's seat
occu-
pancy sta-
tusOWS indi-
cator light
statusPasseng-
er's side
front air-
bag status
Seat unoc-
cupiedOWS indica-
tor light
is not
lit
Passenger's
side front
airbag disa-
bled
Seat occu-
pied by low
weight
occupant/
object
A
OWS indica-
tor light
lights
up
Passenger's
side front
airbag disa-
bled
Seat occu-
pied by
heavy occu-
pant/objectOWS indica-
tor light
is not
lit
Passenger's
side front
airbag ena-
bled
AVolvo recommends that children always be properly
restrained in appropriate child restraints in the rear seats.In
rare situations when the seat belt is not properly fastened,
some child restraints may not be detected by the OWS
because there is very little weight on the vehicle seat cush-
ion. In these cases the passenger's side front airbag may be
disabled, but the PASSENGER AIRBAG OFF indicator lamp
will not be lit. Do not assume that the passenger's side front
airbag is disabled unless the PASSENGER AIRBAG OFFindicator lamp is lit. Make sure the child restraint is properly
installed (turn the vehicle off, remove the child restraint from
the vehicle and reinstall the restraint following the child
restraint manufacturer's instructions) and that the
PASSENGER AIRBAG OFF indicator lamp is on, or move
the child restraint to the rear seat.
The OWS is designed to enable (may inflate)
the passenger's side front airbag in the event
of a collision anytime the system senses that a
person of adult size is sitting properly in the
front passenger's seat. The PASSENGER
AIRBAG OFF indicator lamp will be off and
remain off.
If a person of adult size is sitting in the front
passenger's seat, but the PASSENGER
AIRBAG OFF indicator lamp is on, it is possible
that the person isn't sitting properly in the seat.
If this happens:
1. Turn the vehicle off and ask the person to
place the seat back in an upright position.
2. Have the person sit upright in the seat,
centered on the seat cushion, with the per-
son's legs comfortably extended.
3. Restart the vehicle and have the person
remain in this position for about two
minutes. This will allow the system to
detect that person and enable the pas-
senger's frontal airbag.
4.
If the PASSENGER AIRBAG OFF indicator
lamp remains on even after this, the person
should be advised to ride in the rear seat.

02 Instruments and controls
Instrument overview
02
* Option/accessory, for more information, see Introduction.57
Headlights/Parking lights
Panel vents
Display
Temperature gauge
Odometer/Trip odometer/Cruise control
indicator
Speedometer
Turn signal indicator lights
Tachometer
Ambient temperature gauge, clock, gear
indicator
Fuel gauge
Indicator and warning symbols
Panel vents
Glove compartment
Hazard warning flashers
Audio system
Climate system controls
Windshield wiper/washer lever
Audio control buttons in steering wheel
Instrument panel
Horn
Cruise control buttons in steering wheel
Turn signals, High/low beams, READ-but-
ton
Parking brake pedal
Parking brake release handle
Reading lights
Courtesy light
Moonroof control*
Seat belt reminder
Rearview mirror
Control panel in the driver's door
G029570
Central locking button
Lockout switch for rear seat power win-
dows
Power window controls
Door mirror controls

02 Instruments and controls
Instrument panel
02
60
Seat belt reminderThis symbol lights up to indicate
that the driver has not fastened his/
her seat belt.
Supplemental Restraint System (SRS)If this light comes on while the
vehicle is being driven, or remains
on for longer than approximately
10 seconds after the vehicle has
been started, the SRS system's
diagnostic functions have detected a fault in a
seat belt lock or pretensioner, a front airbag,
side impact airbag, and/or an inflatable curtain.
Have the system(s) inspected by a trained and
qualified Volvo service technician as soon as
possible.
BRAKE – Brake failure warning lightIf the light comes on while driving or braking,
stop immediately, open the hood and check
the brake fluid level in the reservoir. see
page 218.
Canadian models are equipped
with this warning light.
If the BRAKE and ABS warning lights come
on at the same time, this could indicate a
fault in the brake system.
•Stop the vehicle in a suitable place and
switch off the engine.
•Restart the engine.
•If both warning lights go off, no further
action is required.
•If both lights are still on after the engine has
been restarted, switch off the engine again
and check the brake fluid level (see
page 218 for the location of the brake fluid
reservoir).
If the brake fluid level is above the MIN mark,
drive carefully to a trained and qualified Volvo
service technician and have the brake system
inspected.
WARNING
If the fluid level is below the MIN mark in the
reservoir or if a Brake failure – Service
urgent message is displayed in the text
window: DO NOT DRIVE. Have the vehicle
towed to a trained and qualified Volvo serv-
ice technician and have the brake system
inspected.
PARK BRAKE Parking brake appliedThis light will be on when the parking brake
(hand brake) is applied. The parking brake
pedal is located on the left side of the driver's
footwell, see page 79 for more information.
Canadian models are equipped
with this symbol.
Oil pressure warning light2
If the light comes on while driv-
ing, stop the vehicle and then
stop the engine immediately and
check the engine oil level, see
page 62. If the light stays on after
restart, have the vehicle towed to the nearest
trained and qualified Volvo service technician.
After hard driving, the light may come on occa-
sionally when the engine is idling. This is nor-
mal, provided it goes off when the engine
speed is increased.
Generator warning lightIf the light comes on while the
engine is running, have the charg-
ing system checked.
2On certain engines, the symbol for low oil pressure is not used. Instead, a text warning is provided in the information display, see page 62.

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
153.
Tire pressure monitoring lightSee page 194 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 153 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
Center console buttons
02
* Option/accessory, for more information, see Introduction.65
NOTE
If the door mirrors have been inadvertently
pushed out of position (in a car wash, park-
ing lot, etc.) manually return them to normal
position. If mirror adjustment does not seem
to operate after manual folding, reset the
folding mirrors as follows:
•Turn the ignition key to position II.
•Manually fold the mirror(s) to the normal
position.
•Press the button to fold both mirrors in.
•Press the button again to fold the mir-
rors out to their normal position.
Park Assist*This system provides an audi-
ble warning when the vehicle is
being parked or if it is driven
close to a person or object. For
more information see
page 155.
NOTE
The system activates automatically when
the engine is started, and can be deacti-
vated by pressing this button (e.g. when
towing a trailer) or reactivated if necessary.
Auxiliary lightsThis button is used to switch on
auxiliary lights (if installed). A
light in the button will light up to
indicate that the auxiliary lights
are illuminated.
12-volt socketsThe 12-volt sockets can be
used to plug in certain acces-
sories such as cell phones, etc.
The ignition key must be in
position I (or higher) for the aux-
iliary socket to function.
The maximum current consumption is 10A
(120W) if only one of the 12-volt sockets is in
use. If both the front and rear sockets are used
at the same time, the maximum current con-
sumption per socket is 7.5A (90W).
NOTE
The auxiliary sockets can also be used for
cigarette lighters, which are available as
accessories at your Volvo retailer.
Power child locks*For more information on this
function, see page 130.

06 Starting and driving
Ignition switch and steering wheel lock
06
141 Ignition switch and steering wheel lock
0 – Locked position:
Remove the key to lock
the steering wheel
A.
I – Intermediate posi-
tionB – "radio position":
Certain accessories,
radio, etc. on, daytime
running lights off.
II – Drive position: The
key position when driv-
ing. The vehicle's entire
electrical system is con-
nected.
III – Start position:
Release the key when the
engine starts. The key
returns automatically to
the Drive position.
A chime will sound if the key is left in the
ignition and the driver's door is opened.
AThe gear selector must be in the P (Park) position (automatic
transmission).
BPlease be aware that leaving the key in this position will
increase battery drain.
AutostartThis function makes it possible to start the
vehicle without holding the key in the start
position (position III) until the engine starts.
Turn the key to position III and release it. The
starter motor will then operate automatically
(for up to ten seconds) until the engine starts.
Steering wheel lockThe steering wheel lock might be under tension
when the vehicle is parked.
Turn the steering wheel slightly to free the igni-
tion key.
In order to help reduce vehicle theft, make sure
the steering wheel lock is engaged before leav-
ing the vehicle.
WARNING
Never switch off the ignition (turn the ignition
key to position 0) or remove the key from the
ignition switch while the vehicle is in motion.
This could cause the steering wheel to lock,
which would make the vehicle impossible to
steer.

06 Starting and driving
Brake system
06
150
switched off when the vehicle is rolling. The
brake pedal feels harder than usual.
Water on brake discs and brake pads
affects braking
Driving in rain and slush or passing through an
automatic car wash can cause water to collect
on the brake discs and pads. This will cause a
delay in braking effect when the pedal is
depressed. To avoid such a delay when the
brakes are needed, depress the pedal occa-
sionally when driving through rain, slush etc.
This will remove the water from the brakes.
Check that brake application feels normal. This
should also be done after washing or starting
in very damp or cold weather.
Severe strain on the brake systemThe brakes will be subject to severe strain
when driving in mountains or hilly areas, or
when towing a trailer. Vehicle speed is usually
slower, which means that the cooling of the
brakes is less efficient than when driving on
level roads. To reduce the strain on the brakes,
shift into a lower gear and let the engine help
with the braking. Do not forget that, if you are
towing a trailer, the brakes will be subjected to
a greater than normal load.
Anti-lock brakes (ABS)
If the ABS warning lamp lights up there is a
malfunction in the ABS system (the standardbraking system will however function) and the
vehicle should be driven cautiously to a trained
and qualified Volvo service technician for
inspection. The Anti-lock Braking System
(ABS) helps to improve vehicle control (stop-
ping and steering) during severe braking con-
ditions by limiting brake lockup. When the sys-
tem "senses" impending lockup, braking pres-
sure is automatically modulated in order to help
prevent lockup, which could lead to a skid.
The system performs a self-diagnostic test
when the engine is started and when the
vehicle first reaches a speed of approxi-
mately 12 mph (20 km/h). The brake pedal will
pulsate several times and a sound may be
audible from the ABS control module. This is
normal.
To obtain optimal effect from the ABS system,
constant pressure should be kept on the brake
pedal. Do not pump the brake pedal.
The switching of the ABS modulator will be
audible and the brake pedal will pulsate during
braking. Please be aware that ABS does not
increase the absolute braking potential of the
vehicle. While control will be enhanced, ABS
will not shorten stopping distances on slippery
surfaces.
ABS with EBD (Electronic Brake Force
Distribution)
EBD is an integrated part of the ABS system.
EBD regulates the hydraulic pressure to the
rear brakes to help provide optimal braking
capacity. The brake pedal will pulsate during
braking, which is normal.
If the BRAKE and ABS warning lights come on
at the same time, this could indicate a fault in
the brake system.
1. Stop the vehicle in a suitable place and
switch off the engine.
2. Restart the engine.
•If both warning lights go off, no further
action is required.
•If both lights are still on after the engine has
been restarted, switch off the engine again
and check the brake fluid level (see
page 218 for the location of the brake fluid
reservoir).
WARNING
If the fluid level is below the MIN mark in the
reservoir or if a Brake failure – Service
urgent message is displayed in the text
window: DO NOT DRIVE. Have the vehicle
towed to a trained and qualified Volvo serv-
ice technician and have the brake system
inspected.