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212Vehicle care● Vehicle storage at extremetemperatures may cause
damage to the high voltage
battery.
● Remove the black negative (−) cable from the 12 V vehicle
battery and attach a trickle
charger to the vehicle battery
terminals or keep the 12 V
vehicle battery cables connected and trickle charge from the
positive (+) and negative (−)
terminals in the engine
compartment.Caution
The vehicle is equipped with an
AGM 12 V vehicle battery, which
can be damaged by using the
incorrect type of trickle charger.
An AGM compatible charger must be used with the appropriate
setting selected.
Follow the trickle charger
manufacturer instructions.
After the 12 V vehicle battery cable is reconnected, it is possible that the
vehicle may not operate. If this
happens, the high voltage battery
may need to be charged.
Putting back into operation
When the vehicle is to be put back into operation:
● Connect the clamp to the negative terminal of the 12 V
vehicle battery. Activate the
electronics of the power
windows.
● Check tyre pressure.
● Fill up the washer fluid reservoir.
● Check the coolant level.
● Fit the number plate if necessary.
End-of-life vehicle recovery
Information on end-of-life vehicle
recovery centres and the recycling of
end-of-life vehicles is available on our website, where legally required. Only
entrust this work to an authorised
recycling centre.Vehicle checks
Performing work9 Danger
Never try to perform maintenance
work on high voltage battery
components yourself. You may be
injured and the vehicle may be
damaged. Service and repair of
these high voltage battery
components should only be
performed by a trained service
technician with proper knowledge
and tools. Exposure to high
Page 215 of 273
Vehicle care213voltage may cause shock, burns,
and even death. The high voltage
components in the vehicle can
only be serviced by technicians
with special training.
High voltage components are
identified by labels. Do not
remove, open, take apart, or
modify these components. High
voltage cable or wiring has orange
covering. Do not probe, tamper
with, cut, or modify high voltage
cable or wiring.9 Warning
Only perform engine compartment
checks when the vehicle is off.
The cooling fan may start
operating even if the vehicle is off.
Caution
Even small amounts of contamination can cause damage
to vehicle systems. Do not allow
contaminants to contact the fluids, reservoir caps, or dipsticks.
Bonnet
Opening
1. Pull the bonnet release lever and return it to its original position.
2.Move the safety catch sideways to
the left vehicle side and open the
bonnet.
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214Vehicle care3. Release the bonnet support fromits retainer above the radiator
support and place it securely into
the slotted retainer in the bonnet.
Closing
Before closing the bonnet, press the
support into the holder.
Lower the bonnet and let it fall into the latch from a low height (20-25 cm).
Check that the bonnet is engaged.Caution
Do not press the bonnet into the
latch to avoid dents.
Cooling system
The vehicle has three different
cooling systems.
Regularly check the coolant level of
the respective cooling systems and
have the cause of a possible coolant
loss remedied by a workshop.
Caution
Make sure that you never run the
vehicle with insufficient coolant.
A low coolant level can cause
damage to the vehicle.
Heater cooling system
The coolant reservoir is located in the engine compartment.
The coolant provides freeze
protection down to approx. -28 °C.
Caution
Only use approved antifreeze.
If the engine cooling system is cold,
the coolant level should be above the
filling line mark. Top up if the level is
low.
9 Warning
Allow the engine to cool before
opening the cap. Carefully open
the cap, relieving the pressure
slowly.
To top up use a 1:1 mixture of
approved coolant concentrate mixed
with tap water. Install the cap tightly.
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Vehicle care215High voltage battery cooling
system9 Danger
The high voltage battery coolant
may only be serviced by a
qualified technician.
Improper handling could cause serious injuries or death.
The high voltage battery coolantreservoir is located on the front side
of the engine compartment.
Check to see if coolant is visible in the high voltage battery coolant reservoir.
If coolant is visible but the coolant
level is below the cold fill line, there
could be a leak within the cooling
system.
If the coolant level is too low, seek the assistance of a workshop.
Power electronics and charger
modules cooling system9 Danger
The power electronics and
charger modules coolant may only be serviced by a qualified
technician.
Improper handling could cause serious injuries or death.
The power electronics and charger
modules are cooled using the same coolant loop.
The power electronics and charger
modules coolant reservoir is located
on the front side of the engine
compartment.
Check to see if coolant is visible in the
power electronics and charger
modules coolant reservoir. If coolant
is visible but the coolant level is below the cold fill line, there could be a leak
in the cooling system.
If the coolant level is too low, seek the assistance of a workshop.
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216Vehicle careWasher fluid
Fill with clean water mixed with a
suitable quantity of approved
windscreen washer fluid which
contains antifreeze.
When adding windscreen washer
fluid to the vehicle, be sure to read the
manufacturer's instructions before
use.
Caution
Only washer fluid with a sufficient
antifreeze concentration provides
protection at low temperatures or
a sudden drop in temperature.
● When using concentrated washer fluid, follow the
manufacturer's instructions for
adding water.
● Do not mix water with ready-to- use washer fluid. Water can
cause the solution to freeze and
damage the washer fluid tank
and other parts of the washer
system.
● Fill the washer fluid tank only three quarters full when it is verycold. This allows for fluid
expansion if freezing occurs,
which could damage the tank if it
is completely full.
● Do not use engine coolant (antifreeze) in the windscreen
washer. It can damage the
windscreen washer system and
paint.
Washer fluid 3 248.
Brakes In the event of minimum thickness ofthe brake lining, a squealing noise
sounds during braking.Continued driving is possible but
have the brake lining replaced as
soon as possible.
Once new brake linings are installed,
do not brake unnecessarily hard for
the first few journeys.
Brake fluid9 Warning
Brake fluid is poisonous and
corrosive. Avoid contact with eyes,
skin, fabrics and painted surfaces.
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218Vehicle careBatteries do not belong in household
waste. They must be disposed of at
an appropriate recycling collection
point.
There are connecting points for jump
starting in the engine compartment.
Jump starting 3 240.
Remove the 12 V vehicle battery
black negative (−) cable from the
12 V vehicle battery to prevent the
12 V vehicle battery from running
down, or use a battery trickle charger.
Ensure the vehicle is switched off
before connecting or disconnecting
the 12 V vehicle battery.
Vehicle storage 3 211.
Battery discharge protection 3 105.Warning label
Meaning of symbols:
● No sparks, naked flames or smoking.
● Always shield eyes. Explosive gases can cause blindness or
injury.
● Keep the 12 V vehicle battery out
of reach of children.
● The 12 V vehicle battery contains
sulphuric acid which could cause
blindness or serious burn
injuries.
● See the Owner's Manual for further information.
● Explosive gas may be present in the vicinity of the 12 V vehicle
battery.
Post-crash label
The post-crash label is located in the
door frame 3 152.
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220Vehicle careIf the vehicle is damaged in a crash,
the headlight aim may be affected. If
adjustment to the low beam is
necessary, seek the assistance of a
workshop.Bulb replacement
Switch off the vehicle and the relevant
light.
Only hold a new bulb at the base. Do not touch the bulb glass with bare
hands.
Use only the same bulb type for
replacement.
Replace headlight bulbs from within
the engine compartment.
Bulb check
After a bulb replacement, switch on
the vehicle, operate and check the
lights.
Halogen bulbs9 Warning
Halogen bulbs have pressurised
gas inside and can burst if you
drop or scratch the bulb. You or others could be injured. Be sure to read and follow the instructions onthe bulb package.
Xenon headlights9 Danger
Xenon headlights work under
extremely high electrical voltage.
Do not touch. Have bulbs replaced by a workshop.
Bulbs for front turn lights and
corner lighting can be changed.
Sidelight / Daytime running lights are
designed as Light Emitting Diodes
(LEDs) and cannot be replaced.
Front turn lights Each turn light is accessible from
behind via the respective wheel
house:
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Vehicle care223Electrical system
High voltage devices and wiring9 Warning
Exposure to high voltage may
cause shock, burns, and even
death. The high voltage
components in the vehicle should
only be serviced by specially
trained technicians.
High voltage components are
identified by labels. Do not
remove, open, take apart, or
modify these components. High
voltage cable or wiring has orange covering. Do not probe, tamper
with, cut, or modify high voltage
cable or wiring.
Electrical system overload
The vehicle has fuses and circuit
breakers to protect against an
electrical system overload.
If the current electrical load is too
heavy, the circuit breaker will open
and close, protecting the circuit until
the current load returns to normal or the problem is fixed. This greatly
reduces the chance of circuit
overload and fire caused by electrical
problems.
Fuses and circuit breakers protect the
following parts in the vehicle:
● Headlight wiring
● Windscreen wiper motor
● Power windows and other power accessories
Headlight wiring An electrical overload may cause the
lights to go on and off or in some
cases to remain off. In this case, have
the headlight wiring checked
immediately by a workshop.
Windscreen wipers
If the wiper motor overheats due to
blockage from heavy snow or ice, the windscreen wipers will stop until themotor has cooled down and the wiper
control has been turned off. Afterremoval of the blockage, the wiper
motor will restart when moving the
wiper control to the desired operating
position.
Although the circuit is protected from
electrical overload, mechanical
overload due to heavy snow or ice
may cause wiper linkage damage.
Always clear ice and heavy snow
from the windscreen before using the windscreen wipers. If the overload is
caused by an electrical problem and
not snow or ice, it must be serviced.
Fuses
Data on the replacement fuse must match the data on the defective fuse.
There are two fuse boxes in the
vehicle:
● at the front left side of the engine
compartment
● at the left side of the instrument panel
Before replacing a fuse, turn off the
respective switch and the vehicle.