HYBRID INFORMATION
416General information about Twin
Engine
Twin Engine vehicles are driven just like any
other vehicle, but certain functions differ from a
vehicle powered exclusively by gasoline. The
electric motor powers the vehicle primarily at low
speeds; the gasoline engine is used at higher
speeds or during more active driving.
The instrument panel displays Twin Engine-spe-
cific information - charging information, selected
drive mode, distance to discharged battery and
hybrid battery charge level.
Different drive modes can be selected while driv-
ing, e.g. electric power only or, if more power is
needed, a combination of electric and gasoline
power. The vehicle calculates the optimal combi-
nation of driveability, driving experience, environ-
mental impact and fuel economy for the selected
drive mode.
In order to function optimally, the hybrid battery
(and its electrical drive systems) and the gasoline
engine (and its drive systems) must be at the
correct operating temperature. Battery capacity
can be considerably reduced if the battery is too
cold or too hot. Preconditioning prepares the
vehicle's drive systems and passenger compart-
ment before driving to help reduce both wear and
energy consumption. It also helps increase the
hybrid battery's range.
The hybrid battery which powers the electric
motor is recharged using the charging cable. It can also be recharged during light braking and
through engine braking in gear position B. The
combustion engine can also help recharge the
hybrid battery.
Important
No electrical current
Keep in mind that if there is no electrical current
to the vehicle, i.e. the ignition is switched off or
the start battery is discharged, certain functions
such as brakes, power steering, etc. will not work.
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.
Towing not permitted
Never tow a Twin Engine vehicle behind another
vehicle, as this could damage the electric motor.
Exterior engine noise
WARNING
Please be aware that there is no sound from
the engine when the vehicle is being powered
by the electric motor and it may be difficult to
detect by children, pedestrians, cyclists and
animals. This is especially true at low speeds.
High-voltage electrical current
WARNING A number of electrical components in Twin
Engine Plug-in Hybrid vehicles use high-volt-
age current and can be extremely dangerous
if handled incorrectly. These components and
any orange wiring in the vehicle may only be
handled by trained and qualified Volvo service
technicians.
Do not touch anything that is not clearly descri-
bed in this Owner's Manual.
Related information
Charging the hybrid battery (p. 417)
Hybrid gauge (p. 87)
Drive modes (p. 454)
Starting and stopping preconditioning
(p. 233)
Hybrid battery (p. 631)
Factors affecting electric motor range
(p. 469)
MAINTENANCE AND SERVICE
622Engine compartment overview
This overview shows some service-related com-
ponents.
Some of the components included in the vehi-
cle's electric drive system are located in the
engine compartment. Exercise caution when
accessing the engine compartment and only
touch what is required for normal maintenance.
WARNING Orange wiring may only be handled by quali-
fied personnel.
WARNING
Several components in the vehicle work with
high voltage that can be hazardous in case of
an incorrect procedure.
Do not touch anything that is not clearly
described in this Owner's Manual.
Be careful when checking/filling fluids in
the engine compartment. The layout of the engine compartment may vary depend-
ing on model and engine variant.
Coolant expansion tank
Brake fluid reservoir (located on the driver's
side)
Washer fluid filler pipe
12 Fusebox
Air filter
Engine oil filler pipe
WARNING Bear in mind that the cooling fan (located at
the front of the engine compartment behind
the radiator) may start or continue running
automatically up to about 6 minutes after the
engine is turned off.
Always entrust engine washing to a workshop
– an authorized Volvo workshop is recom-
mended. If the engine is hot, there is a risk of
fire.
WARNING
The ignition system works with extremely high
and dangerous voltages. The vehicle electrical
system should always be in ignition mode 0
when work in being performed in the engine
compartment.
Do not touch any spark plugs or ignition coils
when the vehicle electrical system is in igni-
tion mode II or when the engine is warm.
Related information
Opening and closing the hood (p. 620)
Filling washer fluid (p. 662)
Refilling coolant (p. 625)
Fuses in the engine compartment (p. 634)
Checking and filling engine oil (p. 624)
Ignition modes (p. 437) 12
Fill the washer fluid at regular intervals, e.g. when refueling.
MAINTENANCE AND SERVICE
632Battery symbols
There are warning symbols and information on
the batteries. Wear protective goggles.
See the Owner's Manual for
additional information. Keep batteries away from
children. Batteries contain corrosive
acid. Avoid smoking, open
flames, and/or sparks. Risk of explosion.
Recycle properly.
NOTE
A used start battery contains lead and must
be recycled in an environmentally responsible
manner.
Related information
Start battery (p. 627)
Hybrid battery (p. 631) Fuses and fuseboxes
All electrical functions and components are pro-
tected by a number of fuses in order to protect
the vehicle's electrical system from damage by
short circuiting or overloading.
WARNING Never use a foreign object or a fuse with a
higher amperage than that specified to
replace a fuse. This could cause significant
damage to the electrical system and possibly
lead to a fire.
WARNING
Orange wiring may only be handled by quali-
fied personnel.
WARNING
Several components in the vehicle work with
high voltage that can be hazardous in case of
an incorrect procedure.
Do not touch anything that is not clearly
described in this Owner's Manual.
If any electrical component or function is not
responding, the component may have blown a
fuse due to temporary overload. If the same fuse
blows repeatedly, there may be a problem with
the component. Volvo recommends contacting an
authorized Volvo workshop to have the compo-
nent checked.
