Mercedes-Benz 2007 CLK-Class Coupe Operator's Manual page 131

Controls in detail
Lighting
Daytime running lamp mode
Turn the exterior lamp switch to
position M or U.
When the engine is running, the low
beam headlamps are switched on.
In low ambient light conditions, the
following lamps will switch on
additionally:
Tail and parking lamps
License plate lamps
Side marker lamps
i
With the daytime running lamp mode
activated and the engine running, you cannot
switch off the low beam headlamps manually.
130
Canada only
The daytime running lamp mode is
mandatory and therefore in a constant
mode.
i
With the exterior lamp switch in
position M or U, you cannot switch on the
high beam headlamps.
The high beam flasher is available at all times.
For nighttime driving turn the exterior lamp
switch to position B to permit activation of
the high beam headlamps.
When the engine is running, and you shift
from a driving position to position N or P,
the low beam headlamps will switch off
with a three-minute delay.
When the engine is running, and you
turn the exterior lamp switch to
position C, the parking lamps and
the side marker lamps switch on
additionally.
turn the exterior lamp switch to
position B, the manual headlamp
mode has priority over the daytime
running lamp mode.
The corresponding exterior lamps
switch on ( page 128).