2012 VOLVO S80 check engine light

08 Maintenance and specifications
Hood and engine compartment
08
309 Opening and closing the hood
G010951
Pull the lever located under the left side of
the dash to release the hood lock.
Lift the hood slightly. Press the release
control (located under the right front edge
of the hood) to the left, and lift the hood
WARNING
Check that the hood locks properly when
closed.
Engine compartment, overview
G018945
The appearance of the engine compartment
may vary depending on engine model.
Coolant expansion tank
Power steering fluid reservoir
Engine oil dipstick
Radiator
Filler cap for engine oil
Cover over brake fluid reservoir
Battery
Relay and fuse box
Washer fluid reservoir
Air cleaner
WARNING
The cooling fan may start or continue to
operate (for up to 6 minutes) after the engine
has been switched off.
WARNING
The ignition should always be completely
switched off before performing any opera-
tions in the engine compartment.
The distributor ignition system operates at
very high voltages. Special safety precau-
tions must be followed to prevent injury.
Always turn the ignition off when:
•Replacing distributor ignition compo-
nents e.g. plugs, coil, etc.
•Do not touch any part of the distributor
ignition system while the engine is run-
ning. This may result in unintended
movements and body injury.

08 Maintenance and specifications
Replacing bulbs
08

315
NOTE
•Always switch off the ignition before
starting to replace a bulb.
•The optional Active Bending Light bulbs
contain trace amounts of mercury.
These bulbs should always be disposed
of by a trained and qualified Volvo serv-
ice technician.
Removing the headlight housing1. Switch off the ignition by briefly pressing
the START/STOP ENGINE button.
2. Remove the remote key from the ignition
slot
1.
3. (Upper illustration under "Headlight hous-
ing")
Withdraw the headlight housing's lock-
ing pins.
Pull the headlight housing straight out.
CAUTION
When disconnecting the connector, pull on
the connector itself and not on the wiring.
4. (Lower illustration under "Headlight hous-
ing")
Unplug the wiring connector by holding
down the clip with your thumb.
Pull out the connector with the other
hand.
5. Lift out the housing and place it on a soft
surface to avoid scratching the lens.
6. Replace the defective bulb(s).
Reinserting the headlight housing1. Plug in the connector until it clicks into
place.
2. Reinstall the headlight housing and locking
pins. Check that they are correctly
inserted. The headlight housing must be
properly inserted and secured in place
before the lighting is switched on or the
remote key is inserted into the ignition slot.
3. Check that the lights function properly.
Removing the cover to access the
bulbs
G021745
NOTE
Before starting to replace a bulb, see
page 314.
1. Open the retaining clamp by pressing it to
the side.
2. Press down the clips on the upper edge of
the cover and remove it.
Reinstall the cover in the reverse order.
1Does not apply to vehicles with the optional keyless drive.

08 Maintenance and specifications
Battery
08
324
WARNING
•Never expose the battery to open flame
or electric spark.
•Do not smoke near the battery.
•Battery fluid contains sulfuric acid. Do
not allow battery fluid to contact eyes,
skin, fabrics or painted surfaces. If con-
tact occurs, flush the affected area
immediately with water. Obtain medical
help immediately if eyes are affected.
NOTE
The life of the battery is shortened if it
becomes discharged repeatedly.
Maintenance
•Use a screw driver to open the caps or
cover and a flashlight to inspect the level.
•If necessary, add distilled water. The level
should never be above the indicator.
•The fluid level should be checked if the
battery has been recharged.
•After inspection, be sure the cap over each
battery cell or the cover is securely in
place.
•Check that the battery cables are correctly
connected and properly tightened.
•Never disconnect the battery when the
engine is running, or when the key is in the
ignition. This could damage the vehicle's
electrical system.
•The battery should be disconnected from
the vehicle when a battery charger is used
directly on the battery.
•To help keep the battery in good condition,
the vehicle should be driven for at least 15
minutes a week or connected to a charger
with an automatic charging function.
•If the battery is fully discharged a number
of times, this may shorten its service life.
Keeping the battery fully charged helps
prolong its service life.
•The service life of a battery is affected by
factors such as driving conditions and cli-
mate. Extreme cold may also further
decrease the battery’s starting capacity.
•Because the battery’s starting capacity
decreases with time, it may be necessary
to recharge it if the vehicle is not driven for
an extended period of time or if the vehicle
is usually only driven short distances.
CAUTION
•Always use distilled or deionized water
(battery water).
•Never fill above the level mark in the cell.
Changing

10 Index
10
357
general information............................. 116
warning light......................................... 76
Bulbs
headlights...........................314, 315, 316
introduction......................................... 314
license plate lights.............................. 319
side marker lights...............................317
specifications...................................... 320
trunk lighting....................................... 319
C
Camera, Park Assist................................ 185
Capacity weight....................................... 287
Catalytic converter................................... 265
Cell phone, hands-free connection......... 229
Cell phone voice control.......................... 237
Central locking system, introduction......... 52
Chains...................................................... 290
Check engine light..................................... 74
Child restraints
recalls and registration......................... 38
Child restraint systems.............................. 39
booster cushions.................................. 45
convertible seats.................................. 43infant seats........................................... 41
ISOFIX/LATCH anchors........................ 46
top tether anchors................................ 47
Child safety................................................ 36
booster cushions.................................. 45
child restraint systems.......................... 39
convertible seats.................................. 43
infant seats........................................... 41
Child safety locks...................................... 48
City Safety™............................................ 162
Climate system........................................ 139
air distribution............................. 134, 140
air vents.............................................. 135
Interior Air Quality System.................. 134
introduction......................................... 133
passenger compartment filter............ 134
refrigerant........................................... 133
Clock, setting............................................. 78
Cold weather driving................................ 260
Collision warning system.................167, 168
Compass in rearview mirror..................... 103
Conserving electrical current................... 259
Controls, center console.......................... 252
Convertible seats....................................... 43
Coolant............................................312, 349Cooling system, general information....... 259
Courtesy lighting........................................ 94
Crash mode............................................... 35
Cruise control..................................147, 148
adaptive.............................................. 149
Curb weight............................................. 287
Current, conserving................................. 259
D
Defroster.................................................. 139
Detachable key blade..........................57, 59
Disconnecting the front passenger’s air-
bag....................................................... 26, 27
Dome lighting............................................. 94
Door mirrors............................................. 101
Driver alert............................................... 175
Driver distraction warning.......................... 13
Driving economically................................ 258
Driving in cold weather............................ 260
Driving through water..............................259

10 Index
10
358
E
ECC.........................................136, 138, 139
Economical driving.................................. 258
Electric parking brake.............................. 119
Electronic Climate Control.......136, 138, 139
air distribution table............................ 140
Interior Air Quality System.................. 139
ventilated seats................................... 136
Emergency locking retractor...................... 37
Emergency starting.................................. 111
Emergency towing...........................273, 274
Emission inspection readiness................ 307
Engine
overheating........................................... 77
specifications...................................... 346
starting................................................ 109
switching off....................................... 111
Engine compartment overview................309
Engine oil
checking............................................. 310
low pressure warning light.............. 75, 76
specifications...................................... 347
volumes.............................................. 348
Environment............................................... 12Eyelets for anchoring loads..................... 267
F
Federal Clean Air Act............................... 306
Floor mats
cleaning.............................................. 336
placing correctly................................. 109
Fluid specifications.................................. 349
Fog lights
front/rear............................................... 92
Four C (active chassis system)................146
Front airbags.............................................. 22
disconnecting passenger’s side air-
bag.................................................. 26, 27
Front fog lights........................................... 92
Front park assist.............................. 181, 183
Front seats...........................................82, 84
heated................................................. 136
Fuel filler cap........................................... 265
Fuel filler door, opening........................... 264
Fuel level warning light.............................. 75
Fuel requirements............................ 262, 263
Fuel tank volume.....................................349Fuses............................... 326, 327, 330, 333
G
Garage door opener
HomeLink® Wireless Control System. 106
Gasoline requirements............................. 263
Gas tank volume...................................... 349
Gauges...................................................... 73
Geartronic................................................ 114
Geartronic automatic transmission.. 113, 114
Generator warning light............................. 76
Glossary of tire terminology..................... 286
Grocery bag holder.................................. 268
Gross vehicle weight...............................287
H
Hazard warning flashers............................ 93
HD digital radio........................................ 212
Headlights
Active Bending Lights........................... 91
changing bulbs...........................315, 316

10 Index
10
360
L
Labels
list of................................................... 343
location of........................................... 342
LATCH anchors......................................... 46
Leather care............................................. 336
Lighting panel............................................ 90
Load anchoring eyelets...........................267
Loading the vehicle.......................... 267, 287
roof loads............................................ 269
Locking...................................................... 63
Locking the vehicle.................................... 54
Locks, child safety..................................... 48
Low beams................................................ 90
Low fuel level warning light........................ 75
Low oil pressure warning light................... 76
M
Main instrument panel............................. 125
Maintenance............................................ 306
hoisting the vehicle............................. 307
performed by the owner.....................307Malfunction indicator light......................... 74
Media player (infotainment system)......... 219
Menu........................................................ 127
Messages in the instrument panel........... 125
Mirrors
defroster............................................. 102
power door......................................... 101
rearview, auto-dim function................ 102
retractable........................................... 101
vanity.................................................. 195
Moonroof................................................. 104
Motor oil
checking............................................. 310
specifications...................................... 347
volumes.............................................. 348
MY CAR................................................... 127
O
Occupant safety........................................ 16
Occupant weight sensor...................... 26, 27
Octane recommendations.......................263
Odometer, trip........................................... 78Oil
checking............................................. 310
specifications...................................... 347
volumes.............................................. 348
On Call Roadside Assistance.................. 354
Overhead courtesy lighting........................ 94
Overheating, engine................................... 77
Oxygen sensors, heated.......................... 266
P
Paint, touching up.................................... 337
Park assist.......................................181, 183
Park Assist Camera................................. 185
Parking brake
electric, applying/releasing................. 119
warning light......................................... 76
Parking lights............................................. 92
changing bulbs................................... 317
Personal Car Communicator, unique func-
tions........................................................... 55
Polishing.................................................. 335