Keys, locks and alarm system › Key 23
A message stating it is necessary to change the
battery will be displayed.
▶
Keys, locks and alarm system
Key
Replace the battery » page 23.
›
The vehicle cannot be unlocked or locked with the
remote control
There may be the following reasons:
Key Overview
Locking the vehicle
Operating the boot
lid
Unlocking the vehi-
cle
The battery in the key is empty.
Replace the battery » page 23.
The key is not synchronized.
▶
›
▶
Battery status warn-
ing light
Locking tab for re-
moval of the key bit
A
B
Synchronize the key as follows:
Press any button on the key.
Unlock the door within 1 minute with the key via
›
›
the locking cylinder » page 25.
NOTICE
If necessary, the key must be synchronized if a
favoured button on the key has been repeatedly
pressed outside of the effective range of the remote
control.
Protect the key from moisture and strong vibra-
tions.
Keep the grooves in the key clean.
▶
▶
The effective range of the key signal is about
30 m. The effective range can be reduced, e.g. due to
signal interference from other transmitters.
Changing the key battery
The new battery must comply with the specification
of the original battery.
Removing the key bit
Remove the key bit
and partially insert it
into the opening.
›
› Press securing tab A .
The pendant part B of
the key bit folds out.
Press down on the key
fob to release the top
cover.
›
Press the securing tab
›
A again.
Remove the key bit.
›
Open the battery cov-
er.
›
Troubleshooting
The battery in the key is almost empty
After pressing a button on the key, the warning
▶
light does not flash.
Or:
English 
