22 Keys, locks and alarm system › Key
Fold out the key bit.
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Keys, locks and alarm system
Loosen the battery
cover with your thumb
or with a flat-blade
screwdriver at the
marked positions.
Open the battery cov-
er.
Key
Key overview
Lock the vehicle
›
Operate the luggage
compartment lid
Unlock vehicle
Battery status indi-
cator light
Safety button for
opening and closing
the key bit
A
B
Take out the battery.
›
›
Press any key on the
radio key, and the key
resets.
Insert the new battery.
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›
Fit the battery cover
and press until it clicks
into place.
NOTICE
Protect the key from moisture and strong vibra-
tions.
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▶
Keep the grooves in the key bit clean.
The effective range of the key signal is approxi-
mately 30 m. The effective area can be reduced, e.g.
due to signal interference from other transmitters.
Central locking
Functionality
Troubleshooting
Central locking system
The system unlocks and locks all doors, the fuel filler
flap and the luggage compartment flap at the same
time.
The battery in the key is almost empty
After pressing a button on the key, the warning
▶
light does not flash.
Unlock indicator: the flashing lights flash twice.
Lock indicator: the flashing lights flash once.
Or:
A message stating it is necessary to change the
▶
The warning light in the driver's door will flash for
about 2 seconds in quick succession after the vehicle
is locked, then it will start flashing regularly at longer
intervals.
battery will be displayed.
Replace the battery » page 22.
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The vehicle cannot be unlocked or locked with the
remote control
There may be the following reasons.
If none of the doors or the boot lid is opened
within 45 seconds of unlocking, the vehicle automat-
ically locks again.
The battery in the key is empty.
Replace the battery » page 22.
The key is not synchronized.
▶
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SAFE-Function
Depending on the equipment, the SAFEFunction can
be incorporated into the central locking system.
Synchronize the key as follows.
The SAFEFunction prevents the doors from opening
from the inside after locking the vehicle.
Press one of the buttons on the key.
Unlock the door within 1 minute with the key via
the locking cylinder » page 23.
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The SAFEFunction turns on when the vehicle is
locked from the outside.
If necessary, the key must be synchronized if one
of the buttons on the key has been repeatedly press-
ed outside of the effective range of the remote con-
trol.
After the ignition is switched off, a message regard-
ing the SAFEFunction is displayed on the instrument
cluster display.
DANGER
Risk of death!
Changing the key battery
When the vehicle is locked and SAFEFunction is
switched on, no people may remain in the vehicle.
▶
The new battery must meet the specifications of the
original battery.
SAFE-Turn off the function
By double locking within 2 seconds.
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English 
