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212Vehicle care● Do not apply the parking brake.
● Open the bonnet, close all doors and lock the vehicle.Up to four weeks
Plug in the charge cord.Four weeks to 12 months ● Discharge the high voltage battery until two or three bars
remain on the battery range
indicator (battery symbol) on the
instrument cluster.
● Do not plug in the charge cord
● Always store the vehicle in a place with temperatures between−10 °C and 30 °C.
● Vehicle storage at extreme temperatures may cause
damage to the high voltage
battery.
● Remove the black negative (−) cable from the 12-volt vehicle
battery and attach a trickle
charger to the vehicle battery
terminals or keep the 12-volt vehicle battery cables connected
and trickle charge from thepositive (+) and negative (−)
terminals in the engine
compartment.Caution
The vehicle is equipped with an
AGM 12-volt 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 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 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.
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214Vehicle care
2.Move the safety catch sideways to
the left vehicle side and open the
bonnet.
3. Release the bonnet support from its 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.
Too low a 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.
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Vehicle care215Caution
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.
High 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.
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216Vehicle care
Check to see if coolant is visible in thepower 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.
Washer 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 3 244.
Brakes In the event of minimum thickness ofthe brake lining, a squealing noise
sounds during braking.
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Vehicle care227NumberUsage46Integrated chassis control
module47Headlight levelling device48Integrated chassis control
module49Interior rear view mirror50–51E-booster52Rear camera53Run/Crank54A/C control module55Rechargeable energy
storage system pump56–57Power electronics coolant
pump58Engine control module59Electric steering column
lockNumberUsage60HVAC electric heater61On-board charging module62Transmission range control
module 163Electric cooling fan64Engine control module65Auxiliary heater pump66Powertrain relay67Drive unit controller68Rear window defogger69Second run/Crank relay70A/C control module71–72Transmission range control
module73Single power inverter
module74–After having changed defective fuses,
close the fuse box cover and press
until it engages.
If the fuse box cover is not closed
correctly, malfunctions may occur.
Instrument panel fuse boxInstrument panel fuse box on the
left side end
The fuse box is located on the driver's
side behind a cover in the instrument
panel.
To open the compartment, compress
the locking tabs, fold cover down and
remove.