Low-beam headlamps
•► To switch on the low-beam headlamps:
turn the SmartKey in the ignition lock to position 2 or start the engine.
•► Turn the light switch to 
.
The indicator lamp in the instrument
cluster lights up.
See also:
Vehicle data, GL 350 BlueTEC
The data stated here refers specifically to a
vehicle with standard equipment. Consult an
authorized Mercedes-Benz Center for the
data for all vehicle variants and trim levels.
...
Other bulbs
There are bulbs other than the Xenon bulbs
that you cannot replace. Replace only the
bulbs listed. Have the bulbs that
you cannot replace yourself changed at a
qualified specialist workshop.
...
Storing the current speed or calling up
a stored speed
WARNING
The set speed stored in memory should only
be set again if prevailing road conditions and
legal speed limits permit. Possible
acceleration or deceleration differences
arising from ...