2016 VOLVO S80 relay

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Engine compartment – overview
The overview shows the main inspection points in the engine compartment.
Coolant expansion tank
Power steering fluid reservoir
Dipstick-engine oil
Filler cap-engine oil
Cover over brake fluid reservoir
Battery
Relay/fuse box
Washer fluid reservoir
Engine compartment - 4-cylinder engines only
Filler cap-engine oil
Coolant expansion tank
Power steering fluid reservoir
Radiator
Brake fluid reservoir
Battery
Relay/fuse box
Washer fluid reservoir
Air cleaner
The appearance of the engine compartment may vary depending on engine model.
WARNING
The cooling fan (located at the front of the engine compartment, behind the radiator)may start or continue to operate (for up to6 minutes) after the engine has beenswitched off.
WARNING
Before performing any operations in the engine compartment, the ignition shouldalways be completely switched off (inmode 0, see Ignition modes (p. 73)) and
there should be no remote keys in the pas-senger compartment. The gear selectorshould be in the P (park) position. If the
engine has been running, wait until it hascooled before touching any components inthe 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 distributorignition system while the engine is run-ning. This may result in unintendedmovements and body injury.

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RemovalSwitch off the ignition, remove the remote key from the ignition slot and wait at least5 minutes before disconnecting the battery sothat all information in the vehicle's electricalsystem can be stored in the control modules.
Open the clips on the front cover and remove the cover.
Release the rubber molding so that the rear cover is free.
Remove the rear cover by pulling it away.
Detach the black negative cable.
Detach the red positive cable
Detach the ventilation hose from the
battery
Loosen the screw holding the battery
clamp.
Move the battery to the side and lift it up.
WARNING
PROPOSITION 65 WARNING! Battery posts, terminals, and related accessories contain lead and lead com-pounds, chemicals known to the state ofCalifornia to cause cancer and reproduc-tive harm. Wash hands after handling.
Installation1. Lower the battery into the battery box.
2. Move the battery inward and to the side until it reaches the rear edge of the box.
3. Tighten the clamp that secures the bat- tery.
4. Connect the ventilation hose. > Be sure that it is correctly connectedto the battery and the vent in the vehi- cle's body.
5. Connect the red positive cable.
6. Connect the black negative cable.
7. Press in the rear cover. (See Removal).
8. Reinstall the molding. (See Removal).
9. Reinstall the front cover and secure it with the clips. (See Removal).
Related information
• Battery – handling (p. 330)
• Battery – symbols (p. 330)
Fuses – introduction
The fuses help protect the vehicle's electrical components from overloading. There are relay/fuseboxes located in the engine compartment, the passenger com-partment and the trunk. If an electrical component fails to function, this may be due to a blown fuse. The easiestway to see if a fuse is blown is to remove it. To do so:
1. Pull the fuse straight out. If a fuse is diffi-
cult to remove, a special fuse removal
tool is located on the inside of the engine compartment fusebox cover .
2. From the side, examine the curved metal wire in the fuse to see if it is intact.
If the wire is broken, insert a new fuse of the same color and amperage (written on thefuse). If fuses burn out repeatedly, have the electri- cal system inspected by a trained and quali-fied Volvo service technician.
WARNING
Never use metal objects or fuses with higher amperage than those stated on thefollowing pages. Doing so could seriouslydamage or overload the vehicle's electricalsystem.

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336* Option/accessory, for more information, see Introduction.
Engine compartment, upper
Engine compartment, front
Engine compartment, lower
PositionsThese fuses are all located in the engine com- partment box. Fuses in C are located under
A .
A decal on the inside of the cover shows thepositions of the fuses. • Fuses 1 – 15, 34 and 42 – 44 are relays/ circuit breakers and should only beremoved or replaced by a trained andqualified Volvo service technician.
• Fuses 16 – 33 and 35 – 41 may bechanged at any time when necessary.
There is a special fuse removal tool on the underside of the cover.
PosFunctionA
Circuit breaker: central electrical moduleunder the glove com- partment A50
Circuit breaker: central electrical moduleunder the glove com-partment50
PosFunctionA
Circuit breaker: central electrical module in the trunkA60
Circuit breaker: central electrical moduleunder the glove com- partment A60
Circuit breaker: central electrical moduleunder the glove com- partmentA60
–
–
Headed windshield*, driver's side40
Windshield wipers30
–
Climate system blowerA40
Headed windshield*, passenger's side40
ABS pump40
PosFunctionA
ABS valves20
Headlight washers20
Active Bending Lights- headlight leveling*10
Central electrical mod- ule (under the glovecompartment)20
ABS5
Adjustable steering force*5
Engine Control Module (ECM), transmission,SRS10
Heated washer noz- zles*10
-
Lighting panel5
-
-
-
Relay coils5

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* Option/accessory, for more information, see Introduction.337
PosFunctionA
Auxiliary lights*20
Horn15
Relay coils, Engine Control Module (ECM)10
Control module - auto- matic transmission15
A/C compressor (not 4-cyl. engines)15
Relay-coils A/C, relay coils in engine com-partment cold zone forStart/Stop5
Starter motor relay A30
Engine control module (4-cyl. engines) Ignition coils (5-/6-cyl. engines), condenser(6-cyl. engines)20
Engine Control Module (4-cyl. engines)20
Engine Control Module (5-cyl. & 6-cyl. engines)10
PosFunctionA
4-cyl. engines: mass air meter, thermostat,EVAP valve10
5-/6-cyl. engines: Injection system, massair meter (6-cyl.engines only), enginecontrol module15
A/C compressor (5-/6- cyl. engines), enginevalves, engine controlmodule (6-cyl.engines), solenoids (6-cyl. non-turbo only),mass air meter (6-cyl.only), oil level sensor(5-cyl. only)10
Engine valves/oil pump/center heatedoxygen sensor (4-cyl.engines)15
Front/rear heated oxy- gen sensors (4-cyl.engines), EVAP valve(5-/6-cyl. engines),heated oxygen sensors(5-/6-cyl. engines)15
PosFunctionA
Oil pump/crankcase ventilation heater/cool-ant pump (5-cyl.engines)10
Ignition coils (4-cyl. engines)15
Fuel leakage detection (5-/6-cyl. engines),control module forradiator shutter (5-cyl.engines)5
Fuel leakage detection, A/C solenoid (4-cyl.engines)7.5
Coolant pump (4-cyl. engines)50
Cooling fan60 (4/5- cyl.engines)
80 (6-cyl. engines)
Power steering100
A
This position is not used on vehicles with the optional Start/Stop function, refer to the table "Engine compart-ment cold zone" in Fuses – engine compartment cold zone(Start/Stop only) (p. 343).

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Fuses – engine compartment cold zone (Start/Stop only)7
There are fuses in the engine compartment cold zone on models with the Start/Stopfunction.
Location of Start/Stop fuses
Positions
•
Fuses A1, A2 and 1–11 are relays/circuit breakers and should only be removed orreplaced by a trained and qualified Volvoservice technician.
• Fuse 12 may be changed at any timewhen necessary.PosFunctionA
Circuit breaker: central elec- trical module in the enginecompartment175
Circuit breaker: fuseboxes under the glove compart-ment, central electrical mod-ule in the trunk175
PosFunctionA
-
Circuit breaker: fusebox
B
under the glove compartment (see Fuses – glove compart-ment (p. 339))50
7 Option on 4-cyl. engines

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344
PosFunctionA
Circuit breaker: fusebox A
under the glove compartment (see Fuses – glove compart-ment (p. 339))60
Circuit breaker: fusebox A
under the glove compartment (see Fuses – glove compart-ment (p. 339))60
Circuit breaker: central elec- trical module in the trunk60
Climate system blower40
––
––
Starter motor relay30
Internal diode50
Auxiliary battery70
Central electrical module: auxiliary battery referencevoltage, auxiliary batterycharging point15
Related information
• Fuses – engine compartment (p. 335)
• Fuses – glove compartment (p. 339) •
Fuses – cargo area/trunk (p. 342)
• Start/Stop – introduction (p. 243)