battery VOLVO XC90 TWIN ENGINE 2018 Service Manual

HYBRID INFORMATION
}}
419
Twin Engine symbols and messages
in the instrument panel
A number of symbols and messages relating to
the Twin Engine may be displayed in the instru-
ment panel. They may also appear in combina-
tion with general indicator and warning symbols
and disappear when the necessary action has
been taken.Symbol
Message Meaning12 V Battery
Charging fault, service urgent. Drive
to workshop
Battery fault. Contact a workshop
A
to have the battery checked as soon as possible. 12 V Battery
Charging fault Stop safely
Battery fault. Stop the vehicle as soon as possible and contact a worksh\
op
A
to have the battery
checked. 12 V Battery
Fuse failure Service required
Battery fault. Contact a workshop
A
to have the system checked as soon as possible. Hybrid battery
Overheated, stop safely
The hybrid battery's temperature seems to be rising at an abnormal ra\
te. Stop the vehicle and turn
off the engine. Wait at least 5 minutes before driving. Call a workshop
A
or inspect the vehicle to
make sure everything seems normal before continuing to drive. Reduced performance
Max vehicle speed limited
The hybrid battery's charge level is too low for driving at high spee\
ds. Charge the battery as soon as
possible.Hybrid system
Harsh behavior at low speed, vehicle
ok to use
The hybrid system is not functioning properly. Contact a workshop
A
to have the system checked as
soon as possible.

||HYBRID INFORMATION
420
Symbol
Message MeaningHybrid system failure
Service required
The hybrid system is not functioning. Contact a workshop
A
to have the system checked as soon as
possible. Charge cable
Remove before start
Displayed when the driver attempts to start the vehicle with the chargin\
g cable still connected.
Remove the charging cable and close the charger cover.Charge cable
Removed? Turn and hold start knob
7s
Displayed when the driver again attempts to start the vehicle with the c\
harging cable connected.
Disconnect the charging cable or verify that the cable is completely dis\
connected and the charger
cover is closed.A
An authorized Volvo workshop is recommended.
Related information
• Initiating hybrid battery charging (p. 412)
• Stopping hybrid battery charging (p. 418)
• Charging the hybrid battery (p. 407)
• Warning symbols in the instrument panel
(p. 97)
• Indicator symbols in the instrument panel
(p. 94)
• Hybrid gauge (p. 87)
• Hybrid gauge (p. 88)

HYBRID INFORMATION
421
Long-term storage of vehicles with
hybrid batteries
To help minimize degradation of the hybrid bat-
tery if the vehicle is not driven for a prolonged
period (longer than 1 month) the hybrid battery
charge level should be kept at approx. 25%
according to the gauge in the instrument panel.
Do as follows:
1. If the hybrid battery charge level is high, drive
the vehicle until the charge level is approxi-
mately 25%. If the charge level is low, charge
the battery until the level reaches approxi-
mately 25%. 2.

If the vehicle is not driven for more than 6
months or the hybrid battery's charge level is
noticeably below the 25% mark, charge the
battery to about 25% to help compensate for
the natural battery discharge that occurs in
long-term storage. Regularly check the
charge level using the gauge in the instru-
ment display.
NOTE Store the vehicle in as cool a location as pos-
sible to minimize battery aging during long-
term storage. In the summer, park the vehicle
indoors or in a shady location, whichever is
cooler.
Related information
•
Initiating hybrid battery charging (p. 412)
• Hybrid gauge (p. 88)
• Charging the hybrid battery (p. 407)

STARTING AND DRIVING
}}
425
In some situations, such as in cold weather or if
the hybrid battery's charge level is too low, the
gasoline engine will start instead.
The vehicle should not be started with the charg-
ing cable connected. However, if the cable can-
not be pulled out or if the vehicle incorrectly
detects a cable that is not connected, the vehicle
can be started using an override procedure:
1.

Press the brake pedal and turn the start
knob clockwise.
2. Charge cable Remove before start will
appear in the instrument panel.
3.

Turn the start knob clockwise again.
4. Removed? Turn and hold start knob 7s
will appear. Turn the knob clockwise and hold
it for 7 seconds to start the vehicle. Location of the backup reader in the tunnel console. If the
Vehicle key not found message is shown
in the instrument panel at start, place the remote
key at the backup reader and then make a new
start attempt.
NOTE When the remote key is placed in the backup
reader, make sure that no other vehicle keys,
metal objects or electronic devices (e.g. cellu-
lar phones, tablets, laptops or chargers) are in
the backup reader. Multiple vehicle keys close
to each other in the backup reader can dis-
rupt their functionality.
If Vehicle start System check, wait is dis-
played in the instrument panel while attempting
to start the vehicle, wait until the message disap-
pears and try again to start the vehicle.
CAUTION If the engine has not responded after 3
attempts – wait for 3 minutes before starting
a new attempt. Starting capability increases if
the starter battery is given time to recover.
NOTE
The vehicle cannot be started if the hybrid
battery is discharged.
WARNING •
Always remove the remote key from the
passenger compartment when you leave
the vehicle and make sure the ignition is
in mode 0.
• Always put the gear selector in P and
apply the parking brake before leaving
the vehicle. Never leave the vehicle unsu-
pervised while the engine is running.
• Always open the garage door fully and
make sure that ventilation is very good
before starting the engine in a garage.
The exhaust fumes produced by the vehi-
cle contain carbon monoxide, which is
invisible and odorless but very toxic.
WARNING Never remove the remote control key from
the vehicle while driving.
WARNING
Always take along the remote control key
when leaving the vehicle and make sure that
the vehicle electrical system is in ignition
mode 0 – especially if there are children in
the vehicle.

||STARTING AND DRIVING
426
NOTE
With a cold start, idling speed may be consid-
erably higher than normal for certain engine
types. This is done to get the emissions sys-
tem up to normal operating temperature as
quickly as possible, which minimizes exhaust
emissions and protects the environment.
CAUTION
•
When starting in cold weather, the auto-
matic transmission may shift up at slightly
higher engine speeds than normal until
the automatic transmission fluid reaches
normal operating temperature.
• Do not race a cold engine immediately
after starting. This could prevent fluids
from properly lubricating vital compo-
nents in the engine before it has reached
the proper operating temperature.
• The engine should be idling when the
gear selector is moved. Never accelerate
until the gear is fully engaged. Accelerat-
ing rapidly before a gear is properly
engaged could lead to harder wear of
components.
• To help prevent the transmission oil from
overheating, select P or N when idling at
a standstill for prolonged periods of time.
Related information
• Switching off the vehicle (p. 426)
• Ignition modes (p. 427)
• Adjusting the steering wheel (p. 199)
• Jump starting using another battery (p. 469)
• Selecting ignition mode (p. 428) Switching off the vehicle
The vehicle can be switched off using the start
knob in the tunnel console. Start knob in the tunnel console.
To switch off the vehicle:
– Turn the start knob clockwise and release to
switch off the vehicle. The control will auto-
matically return to the original position.
If the vehicle rolls:
– Turn clockwise and hold the knob until the
vehicle switches off.
Related information
• Starting the vehicle (p. 424)
• Ignition modes (p. 427)
• Adjusting the steering wheel (p. 199)

STARTING AND DRIVING
}}
* Option/accessory. 427
•
Jump starting using another battery (p. 469)
• Selecting ignition mode (p. 428) Ignition modes
The vehicle's ignition can be put in various
modes (levels) to make different functions availa-
ble.
To enable the use of a limited number of func-
tions when the engine is not running, the ignition
can be put in one of three different levels: 0, I
and II. These levels are referred to as "ignition
modes" in the Owner's Manual.
The following table shows which functions are
available in each ignition mode: Mode
Functions
0 •The odometer, clock and tem-
perature gauge are illuminated A
.
• The power seats* can be
adjusted.
• The power windows can be used.
• The center display is activated
and can be used A
.
• The 12 V outlet in the cargo com-
partment* can be used.
• The infotainment system can be
used A
.
In this ignition mode, the functions are
available for a limited time and then
switch off automatically.
I •The panoramic roof, power win-
dows, 12 V outlet in passenger
compartment, Bluetooth, naviga-
tion, phone, blower and wind-
shield wipers can be used.
• The power seats can be adjusted.
• The 12 V outlet in the cargo com-
partment can be used.
Electrical current will be taken
from the battery in this ignition
mode.

||STARTING AND DRIVING
428
Mode
Functions
II •The headlights illuminate.
• Warning/indicator lights illumi-
nate for 5 seconds.
• A number of other systems are
activated. However, seat and rear
window heating can only be acti-
vated when the engine is running.
This ignition mode uses a lot of
current from the battery and
should be avoided whenever pos-
sible! A
Also activated when the door is opened.
Related information
• Starting the vehicle (p. 424)
• Adjusting the steering wheel (p. 199)
• Jump starting using another battery (p. 469)
• Selecting ignition mode (p. 428) Selecting ignition mode
The vehicle's ignition can be put in various
modes (levels) to make different functions availa-
ble.
Selecting an ignition mode Start knob in the tunnel console.
•
Ignition mode 0 - Unlock the vehicle and
keep the remote key in the passenger com-
partment.
NOTE To set level I or II without engine start – do
not depress the brake pedal (or clutch pedal
for vehicles with manual transmission) when
selecting this ignition mode. •
Ignition mode I - Turn the start knob clock-
wise and release it. The control will automati-
cally return to the original position.
• Ignition mode II - Turn the start knob clock-
wise and hold it there for approx. 5 seconds.
Release the knob, which will automatically
return to its original position.
• Back to ignition mode 0 - To return to igni-
tion mode 0 from mode I and II, turn the start
knob clockwise and release it. The control
will automatically return to the original posi-
tion.
Related information
• Starting the vehicle (p. 424)
• Switching off the vehicle (p. 426)
• Ignition modes (p. 427)
• Adjusting the steering wheel (p. 199)
• Jump starting using another battery (p. 469)

STARTING AND DRIVING
}}
429
Brake functions
The vehicle's brakes are used to reduce speed
or prevent the vehicle from rolling.
In addition to the wheel brakes and parking
brakes, the vehicle is also equipped with a num-
ber of automatic brake assist functions. These
systems help the driver by e.g. keeping the vehi-
cle stationary when the brake pedal is not
depressed (e.g. at a traffic light or intersection),
when starting up a hill or when driving down a hill.
Depending on how the vehicle is equipped, the
following brake assist functions may be included:
• Auto-hold brakes (Auto Hold)
• Hill Start Assist (Hill Start Assist)
• Braking assist after a collision
• City Safety
• Hill Descent Control (Hill Descent Control)
Related information
•Brakes (p. 429)
• Parking brake (p. 432)
• Auto-hold brakes (p. 436)
• Braking assist after a collision (p. 437)
• Hill Start Assist (p. 437)
• City Safety™ (p. 335)
• Hill Descent Control (p. 454) Brakes
The brake pedal is used to apply the vehicle's
regular brakes, which are part of the brake sys-
tem.
The vehicle is equipped with two brake circuits. If
one brake circuit is damaged, the brake pedal will
go down further when depressed. More pressure
will then be required from the driver for normal
braking effect.
WARNING
If the vehicle does not have electrical current
and both the electric motor and the gasoline
engine are switched off, the brakes cannot be
used to stop the vehicle.
In very hilly areas or when driving with a heavy
load, gear position B can be used to augment the
brakes with engine braking.
Use the Off Road drive mode to increase the
engine braking effect when driving on steep
downgrades at low speeds.
Anti-lock brakesThe vehicle is equipped with an Anti-lock Braking
System (ABS), which can help prevent the
wheels from locking and help maintain steering
control when braking. Vibrations may be felt from
the brake pedal when ABS is operating, which is
normal.
After the vehicle is started, a brief test of the
ABS system is automatically performed when the driver releases the brake pedal. An additional
automatic test of the system may be performed
when the vehicle is traveling at a low speed. Dur-
ing the test, the brake pedal may feel as though it
is pulsating.
Light braking charges the hybrid batteryWhen the brakes are applied lightly, the electric
motor braking function is used. This converts the
vehicle's kinetic energy into electrical energy,
which is used to charge the hybrid battery. When
the battery is being charged with the electric
motor braking function, this will be indicated in
the instrument panel.
When the battery is being charged with the electric
motor braking function, this will be indicated in the
instrument panel.
This function is active at speeds in the range of
150-5 km/h (93-3 mph). When braking at
speeds outside of this range, or during harder
braking, the hydraulic braking system is used to

STARTING AND DRIVING
435
Parking brake malfunction
If you are unable to deactivate or activate the
parking brake after several attempts, contact an
authorized Volvo workshop.
A audible warning signal will sound if the parking
brake is applied while the vehicle is being driven.
If the vehicle must be parked before the problem
is rectified, turn the wheels as when parking on
an incline and put the gear selector in P.
Low battery charge levelIf the battery charge level is too low, it will not be
possible to apply or release the parking brake.
Connect an auxiliary battery to the vehicle if the
battery is discharged.
Replacing brake padsDue to the design of the electric parking brake,
the rear brake pads must be replaced by a work-
shop. An authorized Volvo workshop is recom-
mended.
Symbols in the instrument panel Symbol
Meaning A
B
A flashing symbol indicates that a
fault has been detected. See the
message in the instrument panel. A
B
Fault in the brake system. See the
message in the instrument panel. Information message in the instru-
ment panel.
A
Canadian models.
B US models.Related information
• Activating and deactivating the parking brake
(p. 433)
• Start battery (p. 615)
• Volvo's service program (p. 598)

||STARTING AND DRIVING
* Option/accessory.
440 Help functions
The system will automatically shift to P:
• if the ignition is switched off while D or R is
selected.
• if the driver unbuckles the seat belt and
opens the driver's door while the vehicle is
running with the gear selector in a gear other
than P.
To park a vehicle with an unbuckled seat belt and
open door – end P mode by shifting to R or D
again.
Reverse - R
Select R when backing up. The vehicle must be
stationary when Reverse is selected.
Neutral - N
No gear is selected and the engine can be
started. Apply the parking brake if the vehicle is
stationary with the gear selector in N.
To move the gear selector from Neutral to
another gear, the brake pedal must be depressed
and the ignition in mode II.
D drive mode
D is the normal driving gear position. The trans-
mission shifts up or down automatically depend-
ing on acceleration and speed. The vehicle must
be stationary when the gear selector is moved
from R to D.
Brake - B
B can be selected at any time during a drive. In B
mode, the engine braking function is activated
when the accelerator pedal is released, which
helps charge the hybrid battery. This offers addi-
tional opportunities to recharge the hybrid bat-
tery, since the battery is charged even when the
brake pedal is not depressed. B mode in the instrument panel.
From B mode, it is possible to manually shift to
lower gears. The currently selected gear (1-8) will
be displayed in the instrument panel.
• Pull the gear selector backward once to shift
down one gear.
• Pull the gear selector backward again to shift
down to lower gears.
To shift manually to a higher gear, the vehicle
must be equipped with steering wheel paddles*. •
Push the gear selector forward to return to D
mode.
For smooth shifting and engine performance, the
transmission will shift down automatically if the
vehicle's speed becomes too low for the selected
gear.
Related information
• Shiftlock (p. 442)
• Using the steering wheel paddles* to shift
(p. 441)
• The kickdown function (p. 442)
• Gear indicator* (p. 442)