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Keys, doors and windows21Batteries do not belong in household
waste. They must be disposed of at
an appropriate recycling collection
point.
Key with foldaway key section
Extend the key and remove the
battery holder by undoing the screw
with a suitable screwdriver. Remove
the battery holder from the key and
replace the battery (type CR 2032),
paying attention to the installation
position.
Refit the battery holder in the key and
secure the screw.
Door locks
Anti-theft security lock
To prevent the front door from being
opened from the outside, open the
door and engage the anti-theft
security lock.
Using a suitable tool, turn the lock
switch on the door to locked position
1 . The door cannot be opened from
outside.
The anti-theft security lock remains
engaged even after unlocking the
vehicle with the remote control.
To disengage, turn the switch to
unlocked position 2.
Central locking system
Unlocks and locks the front doors,
sliding side doors and load
compartment.
A pull on an interior door handle
unlocks and opens the respective
door.
For safety reasons, the vehicle
cannot be locked if the key is in the
ignition switch.
Unlocking Notice
In the event of an accident of a
certain severity, the vehicle unlocks
automatically.
Fuel cut-off system 3 91.
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Driving and operating111AutostopIf the vehicle is at a low speed or at a
standstill, activate an Autostop as
follows:
● depress the clutch pedal
● set the lever to neutral
● release the clutch pedal
The engine will be switched off while
the ignition stays on.
An Autostop is indicated when control
indicator ^ flashes in the DIC 3 85.
During an Autostop, the heating,
power steering and brake
performance will be maintained.
Caution
The steering assist may be
reduced during an Autostop.
Conditions for an Autostop
The stop-start system checks if each
of the following conditions is fulfilled.
Otherwise an Autostop will be
inhibited.
● the stop-start system is not manually deactivated
● the bonnet is fully closed
● the driver's door is closed and the
driver's seat belt is fastened
● the battery is sufficiently charged
and in good condition
● the engine is warmed up
● the engine coolant temperature is
not too high
● the engine exhaust temperature is not too high, e.g. after driving
with high engine load
● the ambient temperature is not too low
● the climate control system allows
an Autostop
● the self-cleaning function of the diesel particle filter is not active
● the vehicle has moved since the last Autostop
● the brake vacuum is sufficient ● the windscreen wipers are not operating at fast speed
● reverse gear is not selected
● heated rear window is not operating
Ambient temperature near to the
freezing point can inhibit an
Autostop.
For manual transmission automated vehicles, an Autostop may be
inhibited until a speed of approx.
6 mph is reached.
Immediately after motorway driving
an Autostop may be inhibited.
New vehicle running-in 3 108.
Battery discharge protection
To ensure reliable engine restarts,
several battery discharge protection
features are implemented as part of
the stop-start system.
Page 139 of 189

Vehicle care137Washer fluid
Fill with clean water mixed with a
suitable quantity of windscreen
washer fluid which contains
antifreeze.
Caution
Only washer fluid with a sufficient
antifreeze concentration provides
protection at low temperatures or
a sudden drop in temperature.
Use of washer fluid containing
isopropanol can damage exterior
lamps.
Brakes
A squealing noise, or illumination ofbrake pad wear control indicator F
indicates that the brake lining is at its
minimum thickness.
Continued driving is possible but
have the brake linings replaced as
soon as possible.
Once new brake linings are installed,
do not brake unnecessarily hard for
the first few journeys.
Brake pad wear indicator F 3 79.
Brake fluid9 Warning
Brake fluid is poisonous and
corrosive. Avoid contact with eyes, skin, fabrics and painted surfaces.
The brake fluid level must be betweenthe MIN and MAX marks.
When topping up, ensure maximum cleanliness as contamination of the
brake fluid can lead to brake system
malfunctions. Have the cause of the
loss of brake fluid remedied by a
workshop.
Only use high-performance brake
fluid approved for the vehicle.
Brake and clutch fluid 3 168.
Vehicle battery
The vehicle battery is maintenance-
free provided that the driving profile
allows sufficient charging of the