Volvo V90 (2021 year). Manual in english - page 25

STARTING AND DRIVING

424

Deactivating the Start/Stop

function

In certain situations, it may be advisable to
turn the Start/Stop function off.

To turn off Start/Stop, tap the

Start/Stop

 function button

in the center display's Func-
tion view. The indicator light
in the button will go out
when the function has been
turned off.

The function will remain turned off until:

•

it is reactivated

•

the drive mode is changed to 

Eco

.

Related information

•

Driving with the Start/Stop function
(p. 422)

•

Conditions for the Start/Stop function
(p. 424)

Conditions for the Start/Stop

function

Certain conditions must be met for Start/
Stop to function.

If any condition is not met, this will be indi-
cated in the instrument panel.

The engine does not auto-stop

The engine will not auto-stop if:

•

The vehicle has not reached a speed of
ca 10 km/h (6 mph) after starting.

•

After several auto-stops, the speed must
again exceed approximately ca 10 km/h
(6 mph) before the next auto-stop.

•

The driver has not fastened the seatbelt.

•

The engine is not running at its normal
operating temperature.

•

The ambient temperature is under
approximately -5 °C (23 °F) or over
approximately 30 °C (86 °F).

•

Windshield heating is activated.

•

The climate system settings and the
actual climate in the passenger compart-
ment differ.

•

The vehicle is in reverse.

•

The driver is making large steering wheel
movements.

•

The road gradient is very steep.

•

The hood is open.

•

Driving at high altitude and the engine has
not reached its normal operating tempera-
ture.

•

ABS has been activated.

•

Hard braking (even if the ABS system has
not been activated).

•

Many starts during a short period of time
have triggered the starter motor's over-
heating protection.

•

The exhaust system's particulate filter is
full.

•

A trailer is connected to the vehicle's elec-
trical system.

•

The transmission is not running at its nor-
mal operating temperature.

•

The gear selector is in mode 

M

 (

±

).

•

If traffic conditions allow it (for example in
a traffic jam).

The engine does not auto-start

The engine will not auto-start after an auto-
stop if:

•

The driver is not wearing a seat belt, the
gear selector is in the 

P

 position and the

driver's door is open. The engine must be
started normally.

STARTING AND DRIVING

425

The engine auto-starts while the brake
pedal is depressed

In the following situations, the engine will
auto-start even if the brake pedal is
depressed:

•

High levels of condensation on the inside
of the windows.

•

The climate system settings and the
actual climate in the passenger compart-
ment differ.

•

The brake pedal is pumped repeatedly.

•

The hood is open.

•

The vehicle begins to roll or increases
speed slightly if the engine auto-stopped
before the vehicle was at a standstill.

•

The driver's seat belt is unbuckled with the
gear selector in the 

D

 or 

N

 positions.

•

The gear selector is moved from 

D

 to 

R

 or

M

 (

±

).

•

The driver's door is opened with the gear
selector in 

D

. An audible signal and a text

message informs the driver that the igni-
tion is on.

WARNING

Do not open the hood if the engine has

auto-stopped. Turn off the engine by

switching off the ignition before lifting the

hood.

Related information

•

Start/Stop function (p. 422)

•

Driving with the Start/Stop function
(p. 422)

•

Deactivating the Start/Stop function
(p. 424)

STARTING AND DRIVING

* Option/accessory.

426

Leveling control

*

 and suspension

Self-leveling and suspension functions are
controlled automatically.

Rear leveling control keeps the rear section of
the vehicle at the same height regardless of
load. Leveling control may also remain active
when the vehicle is parked.

Shock absorbers (Four-C)

On vehicles equipped with Four-C, the shock
absorbers are adapted to the selected drive

mode and the current vehicle speed. The
shock absorbers are normally set to help opti-
mize comfort and are adjusted continuously
according to the road surface and the vehicle's
acceleration, braking and cornering.

Transporting

When transporting the vehicle on a ferry, train
or truck, only secure (lash) the vehicle around
the tires, not using any other parts of the chas-
sis. Changes in the pneumatic suspension

may occur during transport, which could
adversely affect the lashing and result in dam-
age.

Symbols and messages

If a problem occurs with the leveling control, a
message will be displayed in the instrument
panel.

Symbol

Message

Meaning

Suspension

Deactivated by user

Active chassis has been switched off manually by the user.

Suspension

Temporarily reduced performance

Active chassis performance has been temporarily reduced due to extensive system use.

STARTING AND DRIVING

}}

427

Symbol

Message

Meaning

Suspension

Service required

A fault has occurred. Visit a workshop

A

 as soon as possible.

Suspension failure

Stop safely

A critical fault has occurred. Stop safely, have the car towed to a workshop

A

.

Suspension

Slow down Vehicle too high

A fault has occurred. If the message appears while driving, contact a workshop

A

.

Suspension

Auto adjusting vehicle level

Level control of the car's rear axle to target height is in progress.

A

An authorized Volvo workshop is recommended.

||

STARTING AND DRIVING

* Option/accessory.

428

Related information

•

Leveling control settings

*

 (p. 429)

•

Drive modes

*

 (p. 417)

STARTING AND DRIVING

}}

* Option/accessory.

429

Leveling control settings

*

Turn off leveling control before lifting the
vehicle with a jack to help avoid problems
with the pneumatic suspension.

Center display settings

Disable Leveling Control

In certain situations this function must be
turned off e.g. before the vehicle is raised
using a jack

*

. The level difference caused by

raising the vehicle with a jack could cause
problems with the pneumatic suspension.

Turning off the function in the center display:

1. Tap 

Settings

 in the Top view.

2. Tap 

My Car

Parking Brake and

Suspension

.

3. Select 

Disable Leveling Control

.

Related information

•

Leveling control

*

 and suspension (p. 426)

•

Loading recommendations (p. 564)

Economical driving

A more economical driving style can help
lower fuel consumption.

Before driving

•

If possible, precondition the vehicle before
driving.

•

If preconditioning is not possible when it
is cold outside, use seat and steering
wheel heating first. Avoid heating the
entire passenger compartment to reduce
the amount of current being taken from
the start battery.

•

Avoid using idling to warm up the vehicle
before driving.

•

The type of tires and inflation pressure
used could affect energy consumption –
consult an authorized Volvo retailer for
advice on suitable tires.

•

Remove unnecessary items from the vehi-
cle - the heavier the load, the higher the
fuel consumption.

While driving

•

Activate 

Eco

 drive mode.

•

Use gear selector position 

D

 as often as

possible.

•

When using manual gear shifting, drive
using the highest possible gear. Use the
gear indicator

14

.

•

Maintain a steady speed and a generous
following distance to traffic ahead to mini-
mize braking. Use engine braking if possi-
ble.

•

Higher speeds increase energy consump-
tion because air resistance increases with
speed.

•

In a cold climate, reduce heating of the
windshield/rear window, mirrors, seats
and the steering wheel.

•

Avoid driving with the windows open.

•

Do not use the accelerator pedal to keep
the vehicle stationary on an uphill gradi-
ent. Instead, activate the auto-hold brake
function at a standstill.

•

Use trip data to see current fuel consump-
tion.

WARNING

Never turn off the engine while the vehicle

is moving, e.g. when driving downhill. This

deactivates certain important systems

such as power steering and brakes.

14

Only available in certain markets.

||

STARTING AND DRIVING

* Option/accessory.

430

After driving

•

If possible, park in a climate-controlled
garage.

Related information

•

Eco drive mode (p. 420)

•

Starting and stopping preconditioning

*

(p. 232)

•

Checking tire pressure (p. 535)

•

Activating and deactivating Auto-hold at a
standstill (p. 408)

•

Start/Stop function (p. 422)

•

Trip computer (p. 93)

Preparing for a long trip

It is important to have the vehicle's systems
and equipment checked carefully before driv-
ing long distances.

Check that

•

the engine is running properly and that
fuel consumption is normal

•

there are no leaks (fuel, oil or other fluid)

•

the brake pedal is functioning properly

•

tire tread depth and air pressure are at
correct levels. Change to snow tires when
driving in areas where there is a risk of
snowy or icy roads

•

the start battery is sufficiently charged

•

the wiper blades are in good condition

Related information

•

Checking tire pressure (p. 535)

•

Filling washer fluid (p. 640)

•

Winter driving (p. 430)

•

Economical driving (p. 429)

•

Vehicle modem settings (p. 511)

•

Loading recommendations (p. 564)

•

Driving with a trailer (p. 440)

•

Pilot Assist

*

 (p. 302)

•

Tire sealing system (p. 550)

Winter driving

It is important to check the vehicle before
driving in cold/snowy conditions to make
sure it can be driven safely.

Before the cold season arrives:

•

Make sure the engine coolant contains
50% antifreeze. This mixture helps pro-
tect the engine from frost erosion down to
approx. –35 °C (–31 °F). Do not mix dif-
ferent types of antifreeze as this could
pose a health risk.

•

Keep the fuel tank well filled to prevent
condensation from forming.

•

Check the viscosity of the engine oil. Oil
with low viscosity (thinner oil) improves
cold-weather starting and reduces fuel
consumption when driving with a cold
engine.

•

Check the condition and charge level of
the start battery. Cold weather places
greater demands on the start battery and
reduces its capacity.

•

Use washer fluid containing antifreeze to
help prevent ice from forming in the
washer fluid reservoir.

See separate section for engine oil recommen-
dations.

STARTING AND DRIVING

431

Slippery driving conditions

To help optimize traction and roadholding,
Volvo recommends using snow tires on all
wheels whenever there is a risk of snow or ice
on the road.

NOTE

Certain countries require use of winter tires
by law. Not all countries permit the use of
studded tires.

Practice driving on slippery surfaces under
controlled conditions to learn how the vehicle
reacts.

Related information

•

Engine oil specifications (p. 652)

•

Snow tires (p. 548)

•

Snow chains (p. 549)

•

Braking on salted roads (p. 403)

•

Braking on wet roads (p. 403)

•

Filling washer fluid (p. 640)

•

Starter battery (p. 594)

•

Replacing windshield wiper blades
(p. 638)

•

Changing rear window wipers (p. 637)

•

Refilling coolant (p. 592)

Driving through standing water

It may be necessary to drive the vehicle
through standing water e.g. deep puddles or
flooding on the road. This must be done with
great caution.

The vehicle can be driven through water up to
a depth of 25 cm (9 in) at no more than walk-
ing speed. Be particularly careful when driving
through flowing water.

When driving through standing water, drive
slowly and do not stop the vehicle. When you
have passed the water, press lightly on the
brake pedal and check that the brakes are
functioning properly. Water, mud, slush, etc.
can make the brake linings slippery, resulting
in delayed braking effect.

•

If the vehicle is equipped with contacts for
an electric heater or trailer coupling, clean
these after driving in water or mud.

•

Do not allow the vehicle to stand in water
up to the sills any longer than absolutely
necessary. This could result in electrical
malfunctions.

CAUTION

•

Engine damage could occur if water
enters the air cleaner.

•

If water enters the transmission, the
lubricating ability of the oils is reduced
and the service life of these systems is
shortened.

•

Damage to any component, engine,
transmission, turbocharger, differential
or its internal components caused by
flooding, vapor lock or insufficient oil is
not covered under warranty.

•

If the engine stalls while the vehicle is
in water, do not attempt to restart it.
Have the vehicle towed out of the
water to a workshop. An authorized
Volvo workshop is recommended. Risk
of engine failure.

CAUTION

Because it can be difficult to determine the
water depth, Volvo recommends not driv-
ing through standing or running water. The
driver is always responsible for operating
the vehicle in a safe manner and adhering
to all applicable laws and regulations.

Related information

•

Recovery (p. 447)

STARTING AND DRIVING

* Option/accessory.

432

Opening/closing the fuel filler door

The vehicle must be unlocked before the fuel
filler door can be opened

15

.

An arrow next to the fuel
pump symbol in the instru-
ment panel indicates the side
of the vehicle on which the
fuel filler door is located.

1. Open the fuel filler door by pressing lightly

on its rear edge.

2. After refueling, press the fuel filler door

lightly to close it.

Related information

•

Refueling (p. 432)

Refueling

The fuel tank is equipped with a fuel filling
system without a cover.

Refueling the vehicle at a service
station

It is important to insert the pump's nozzle past both

of the two flaps in the fuel filler pipe before beginning

fueling.

Instructions for fueling:

1. Turn off the engine and open the fuel filler

door.

2. Select a fuel approved for use in the vehi-

cle. For more information on approved
fuels, see the section on “Fuel”.

3. Insert the pump's nozzle into the fuel filler

pipe's opening. There are two flaps just
inside the fuel filler pipe and the pump's
nozzle must push both of these flaps open
before fuel can be added.

4. Avoid overfilling the tank. Do not press the

handle on the filler nozzle again after it has
initially stopped pumping.
> The fuel tank is now filled.

NOTE

An over-full tank may overflow in hot
weather.

CAUTION

Avoid spilling gasoline during refueling. In
addition to causing damage to the environ-
ment, gasolines containing alcohol can
cause damage to painted surfaces, which
may not be covered under the New Vehicle
Limited Warranty.

Refueling from a fuel container

When filling from a fuel container, use the fun-
nel provided in a foam block under the floor
hatch in the cargo compartment.

1. Open the fuel filler door.

15

Only locking and unlocking using the remote key, Passive Entry

*

 or Volvo On Call will affect the status of the fuel filler door.

STARTING AND DRIVING

}}

433

2. Insert the funnel into the fuel filler pipe's

opening. There are two flaps just inside
the fuel filler pipe and the tube section of
the funnel must push both of these flaps
open before fuel can be added.

WARNING

California Proposition 65

Operating, servicing and maintaining a pas-

senger vehicle can expose you to chemi-

cals including engine exhaust, carbon mon-

oxide, phthalates, and lead, which are

known to the State of California to cause

cancer and birth defects or other reproduc-

tive harm. To minimize exposure, avoid

breathing exhaust, do not idle the engine

except as necessary, service your vehicle in

a well ventilated area and wear gloves or

wash your hands frequently when servicing

your vehicle. For more information go to

Related information

•

Opening/closing the fuel filler door
(p. 432)

•

Fuel (p. 433)

Fuel

Volvo recommends the use of detergent gas-
oline to control engine deposits.

Deposit control gasoline (gasoline
with detergent additives)

Detergent gasoline is effective in keeping
injectors and intake valves clean. Consistent
use of deposit control gasolines will help
ensure good driveability and fuel economy. If
you are not sure whether the gasoline contains
deposit control additives, check with the serv-
ice station operator.

NOTE

Volvo recommends not using external fuel
injector cleaning systems, e.g. do not add
detergent additives to gasoline before or
after refueling.

Unleaded fuel

All Volvo vehicles have a three-way catalytic
converter and must only use unleaded gaso-
line. US and Canadian regulations require that
pumps delivering unleaded gasoline are
labeled "UNLEADED". Only the nozzles of
these pumps will fit in your vehicle's fuel filler
inlet. It is unlawful to dispense leaded fuel into
a vehicle labeled "unleaded gasoline only".
Leaded gasoline damages the three-way cata-
lytic converter and the heated oxygen sensor

system. Repeated use of leaded gasoline will
lessen the effectiveness of the emission con-
trol system and could result in loss of emission
warranty coverage. State and local vehicle
inspection programs will make detection of
misfueling easier, possibly resulting in emis-
sion test failure for misfueled vehicles.

NOTE

Some U.S. and Canadian gasolines contain
an octane enhancing additive called
methyl-cyclopentadienyl manganese tricar-
bonyl (MMT). If such fuels are used, your
Emission Control System performance
may be affected, and the Check Engine
Light (malfunction indicator light) located
on your instrument panel may light. If this
occurs, please return your vehicle to a
trained and qualified Volvo service techni-
cian for service.

Gasoline containing alcohol and
ethers, "Oxygenated fuels"

Some fuel suppliers sell gasoline containing
"oxygenates" which are usually alcohols or
ethers. In some areas, state or local laws
require that the service pump be marked indi-
cating use of alcohols or ethers. However,
there are areas in which the pumps are
unmarked. If you are not sure whether there is
alcohol or ethers in the gasoline you buy,
check with the service station operator. To

||

STARTING AND DRIVING

434

meet seasonal air quality standards, some
areas require the use of "oxygenated" fuel.

Volvo permits the use of the following "oxy-
genated" fuels. However, the specified octane
ratings must still be met.

Alcohol - Ethanol

Fuels containing up to 10% ethanol by volume
may be used. Ethanol may also be referred to
as Ethyl alcohol, or "Gasohol".

Ethers - MTBE/ETBE: Fuels containing up to
22% MTBE/ETBE by volume may be used.

Methanol

Do not use gasolines containing methanol
(methyl alcohol, wood alcohol). This practice
can result in vehicle performance deterioration
and can damage critical parts in the fuel sys-
tem. Such damage may not be covered under
the New Vehicle Limited Warranty.

Related information

•

Octane rating (p. 434)

•

Opening/closing the fuel filler door
(p. 432)

•

Refueling (p. 432)

•

Emission controls (p. 436)

Octane rating

Volvo requires premium fuel (91 octane

16

 or

higher) for all T5, T6 and T8 engines, and rec-
ommends AKI 93 for optimal performance
and fuel economy. See decal examples in
illustrations 1 and 2.

Minimum octane

Decals

Illustration 1: Sample fuel pump octane label

16

.

Illustration 2: Decal on the inside of the fuel filler flap
on vehicles that require premium fuel

17

.

TOP TIER Detergent Gasoline

Volvo endorses the use of "TOP TIER Deter-
gent Gasoline" where available to help main-
tain engine performance and reliability. TOP
TIER Detergent Gasoline meets a new stand-
ard jointly established by leading automotive
manufactures to meet the needs of today's
advanced engines. Qualifying gasoline retail-
ers (stations) will, in most cases, identify their
gasoline as having met the "TOP TIER Deter-
gent Gasoline" standards.

NOTE

Information about TOP TIER Detergent
Gasoline is available at toptiergas.com

16

AKI (Anti Knock Index) is an average value of RON (Research Octane Number) and MON (Motor Octane Number) - (RON)+(MON)/2

17

For supplementary information - see the car's Service and Warranty Booklet.

STARTING AND DRIVING

435

NOTE

When switching to higher octane fuel or
changing gasoline brands, it may be neces-
sary to fill the tank more than once before a
difference in engine operation is noticea-
ble.

Fuel Formulations

Do not use gasoline that contains lead or man-
ganese as a knock inhibitor, and do not use
lead additives. Besides damaging the exhaust
emission control systems on your vehicle, lead
has been strongly linked to certain forms of
cancer.

Many fuels contain benzene as a solvent.
Unburned benzene has been strongly linked to
certain forms of cancer. If you live in an area
where you must fill your own gas tank, take
precautions. These may include:

•

standing upwind away from the filler noz-
zle while refueling

•

refueling only at gas stations with vapor
recovery systems that fully seal the mouth
of the filler neck during refueling

•

wearing neoprene gloves while handling a
fuel filler nozzle.

Use of Additives

With the exception of gas line antifreeze dur-
ing winter months, do not add solvents, thick-
eners, or other store-bought additives to your
vehicle's fuel, cooling, or lubricating systems.
Overuse may damage your engine, and some
of these additives contain organically volatile
chemicals. Do not needlessly expose yourself
to these chemicals.

WARNING

Never carry a cell phone that is 

switched

on

 while refueling your vehicle. If the

phone rings, this may cause a spark that

could ignite gasoline fumes, resulting in fire

and injury.

WARNING

Carbon monoxide is a poisonous, colorless,

and odorless gas. It is present in all exhaust

gases. If you ever smell exhaust fumes

inside the vehicle, make sure the passenger

compartment is ventilated, and immedi-

ately return the vehicle to a trained and

qualified Volvo service technician for cor-

rection.

Demanding driving

In demanding driving conditions, such as
when towing a trailer or driving in hot weather
or for prolonged periods at high altitudes, it

may be a good idea to switch to a higher-
octane fuel (AKI

16

 91 or higher) or to switch to

another brand of gasoline in order to fully uti-
lize the vehicle's engine capacity and optimize
traction.

Related information

•

Fuel (p. 433)

•

Emission controls (p. 436)

16

AKI (Anti Knock Index) is an average value of RON (Research Octane Number) and MON (Motor Octane Number) - (RON)+(MON)/2

STARTING AND DRIVING

436

Emission controls

Three-way catalytic converter

•

Keep your engine properly tuned. Certain
engine malfunctions, particularly involving
the electrical, fuel or distributor ignition
systems, may cause unusually high three-
way catalytic converter temperatures. Do
not continue to operate your vehicle if you
detect engine misfire, noticeable loss of
power or other unusual operating condi-
tions, such as engine overheating or back-
firing. A properly tuned engine will help
avoid malfunctions that could damage the
three-way catalytic converter.

•

Do not park your vehicle over combustible
materials, such as grass or leaves, which
can come into contact with the hot
exhaust system and cause such materials
to ignite under certain wind and weather
conditions.

•

Excessive starter cranking (in excess of
one minute), or an intermittently firing or
flooded engine can cause three-way cata-
lytic converter or exhaust system over-
heating.

•

Remember that tampering or unauthor-
ized modifications to the engine, the
Engine Control Module, or the vehicle may
be illegal and can cause three-way cata-
lytic converter or exhaust system over-
heating. This includes: altering fuel injec-

tion settings or components, altering
emission system components or location
or removing components, and/or repeated
use of leaded fuel.

NOTE

Unleaded fuel is required for vehicles with
three-way catalytic converters.

Heated oxygen sensors

The heated oxygen sensors monitor the oxy-
gen content of the exhaust gases. Readings
are fed into a control module that continuously
monitors engine functions and controls fuel
injection. The ratio of fuel to air into the engine
is continuously adjusted for efficient combus-
tion to help reduce harmful emissions.

Related information

•

Octane rating (p. 434)

•

Fuel (p. 433)

Overheating of engine and

transmission

In certain driving conditions, such as driving
in mountainous areas or hot weather, there is
a risk of the engine or transmission overheat-
ing, especially when carrying heavy loads.

•

Engine power may be temporarily limited.

•

Remove any auxiliary lights mounted in
front of the grille when driving in hot
weather.

•

If the temperature in the engine's cooling
system becomes too high, a warning sym-
bol will appear in the instrument panel
along with the message 

Engine

temperature

 

High temperature Stop

safely

. Pull over to a safe location and let

the engine idle for a few minutes to cool
down.

•

If the message 

Engine temperature

High temperature Turn off engine

 or

Engine coolant

 

Level low, turn off

engine

 is displayed, stop the vehicle and

turn off the engine.

•

If the transmission begins to overheat, an
alternative gear shifting program will be
selected. An integrated protective function
will also be activated, the warning symbol
will illuminate and the message

Transmission warm

 

Reduce speed to

lower temperature

 or 

Transmission hot

Stop safely, wait for cooling

 will be dis-

STARTING AND DRIVING

437

played in the instrument panel. Follow the
recommendations given by reducing
speed or stopping the vehicle safely and
letting the engine idle for a few minutes to
let the transmission cool.

•

If the vehicle begins to overheat, the air
conditioning may be temporarily switched
off.

•

After a prolonged period of driving in
demanding conditions, do not turn off the
engine immediately after stopping.

NOTE

It is normal for the engine's cooling fan to
operate for a short time after the engine is
switched off.

Symbols in the instrument panel

Symbol Meaning

High engine temperature. Follow
the recommendations provided.

Low coolant level. Follow the
recommendations provided.

Transmission hot/overheated/
cooling. Follow the recommen-
dations provided.

Related information

•

Refilling coolant (p. 592)

•

Driving with a trailer (p. 440)

•

Preparing for a long trip (p. 430)

Battery drain

The electrical functions in the vehicle drain
the battery to varying degrees. Avoid using
ignition mode 

II

 when the engine is switched

off. Use ignition mode 

I

 instead, as this uses

less electrical current.

Note that certain accessories may also drain
power from the electrical system. Do not use
functions that use a lot of electrical current
when the engine is turned off. Examples of
such functions are:

•

blower

•

headlights

•

windshield wipers

•

audio system (especially at high volume).

If the starter battery voltage is low, a message
is shown in the driver display. The vehicle's
energy-saving function will then turn off or
reduce certain functions, such as the blower
and/or the audio system.

–

To charge the battery, start the engine and
let it run for at least 15 minutes (driving
charges the battery faster than letting the
engine idle).

Related information

•

Starter battery (p. 594)

•

Ignition modes (p. 399)

STARTING AND DRIVING

438

Jump starting using another

battery

If the start battery is discharged, current from
another battery can be used to start the vehi-
cle.

Jumper cable connecting points. Engine compart-

ment appearance may vary depending on vehicle

model and equipment level.

To avoid short circuits or other damage, the
following steps are recommended when jump
starting the battery using another battery:

1. Put the ignition in mode 

0

.

2. Make sure the auxiliary battery (the bat-

tery used to jump start the discharged
battery) has a voltage of 12 volts.

3. If the auxiliary battery is in another vehicle,

turn off that vehicle's engine and make
sure that the vehicles are not touching
each other.

4. Clamp the red jumper cable onto the auxil-

iary battery's positive (+) terminal (1).

CAUTION

Connect the jump cable carefully to pre-
vent short circuits with other components
in the engine compartment.

5. Fold back the cover over your vehicle's

positive (+) jump start terminal (2).

6. Clamp the other end of the red jumper

cable to your vehicle's positive (+) jump
start terminal (2).

7. Clamp the black jumper cable onto the

auxiliary battery's negative (-) terminal (3).

8. Clamp the other end of the black jumper

cable to your vehicle's negative (-) ground
point (4).

9. Make sure the jumper cables are securely

attached to help prevent sparks while
jump starting.

10. Start the engine of the assisting vehicle

and let it run for a few minutes at a higher
idling speed than normal, about
1500 rpm.

11. Start the engine of the vehicle with the

dead battery.

CAUTION

Do not touch the connections between the
cable and the vehicle during the start
attempt. Risk of sparking.

12. Remove the jumper cables in the reverse

order 

‒ 

first the black cables and then the

red cables.

Make sure that none of the clamps of the
black jumper cables come into contact
with either vehicle's positive (+) jump start
terminals or either of the red jumper
cable's connected clamps.

STARTING AND DRIVING

}}

439

WARNING

High voltage may be dangerous if handled

incorrectly. Do not touch anything on bat-

teries that is not clearly described in this

•

Never use a 48 V support battery to
jump start the vehicle.

•

External electrical equipment may not
under any circumstance be connected
to the 48 V battery.

•

Only a workshop may replace or per-
form service on the 48 V battery – an
authorized Volvo workshop is recom-
mended.

WARNING

PROPOSITION 65 WARNING! 

Battery

posts, terminals, and related accessories

contain lead and lead compounds, chemi-

cals known to the state of California to

cause cancer and reproductive harm. Wash

hands after handling.

WARNING

•

Batteries generate hydrogen gas,
which is flammable and explosive.

•

Do not connect the jumper cable to
any part of the fuel system or to any
moving parts. Avoid touching hot
manifolds.

•

Battery fluid contains sulfuric acid. Do
not allow battery fluid to contact eyes,
skin, fabrics or painted surfaces.

•

If contact occurs, flush the affected
area immediately with water. Obtain
medical help immediately if eyes are
affected.

•

Never expose the battery to open flame
or electric spark. Do not smoke near
the battery. Failure to follow the
instructions for jump starting can lead
to injury.

NOTE

If the starter battery has been discharged
to the extent that the vehicle does not have
normal electrical functions and the engine
must then be jump-started with an external
battery or a battery charger, the Start/Stop
function may remain activated. If the Start/
Stop function shortly thereafter auto-stops
the engine, there is a huge risk that auto-
start of the engine will fail due to insuffi-
cient battery capacity since the battery had
not had time to recharge.

If the vehicle has been jump-started or if
there has not been enough time for the
battery to be charged with a battery
charger, the Start/Stop function should be
temporarily deactivated until the battery
has been recharged by the vehicle. At an
ambient temperature of about +15°C
(about 60°F), the battery must be charged
by the vehicle for at least one hour. At
lower ambient temperatures, the charging
time can increase to 3-4 hours. It is advisa-
ble to charge the battery with an external
battery charger.

Related information

•

Starting the vehicle (p. 396)

•

Ignition modes (p. 399)

•

Adjusting the steering wheel (p. 201)