![](http://pdfasset.owneriq.net/c/1e/c1e3979c-7e95-40d8-ac25-161a5618c477/c1e3979c-7e95-40d8-ac25-161a5618c477-bg56.png)
86
Controls in detail
Locking and unlocking
Checking the batteries
̈ Press button ‹ or Œ.
Battery check lamp 5 lights up briefly
to indicate that the key batteries are in
order.
Unlocking the trunk lid
You can unlock the trunk separately.
̈ Press and hold button Š until trunk
unlocks.
!
If you can no longer lock or unlock the
vehicle with the key, then either the
batteries in the SmartKey are dis-
charged or the key is malfunctioning.
ț Check the batteries in the key and
replace them if necessary
(
୴ page 312).
or
ț Use the mechanical key to unlock
the doors (
୴ page 310) and trunk
(
୴ page 311) as required. Lock the
vehicle using the mechanical key
(
୴ page 311).
If the key is malfunctioning, contact an
authorized Mercedes-Benz Center.
!
If battery check lamp 5 does not light
up briefly during check, then the key
batteries are discharged.
Replace the batteries (
୴ page 312).
You can obtain the required batteries
at any authorized Mercedes-Benz Cen-
ter.
!
The trunk lid swings open upwards au-
tomatically. Always make sure that
there is sufficient overhead clearance.
i
If the vehicle was previously centrally
locked with the SmartKey, the trunk lid
will lock automatically after closing it.
The turn signals will flash three times to
confirm locking.
If the trunk lid was previously separate-
ly locked (
୴ page 94), the trunk lid will
remain locked.