2007 MERCEDES-BENZ R350 engine

148 Controls in detail
Lighting
Daytime running lamp mode
Turn the exterior lamp switch to
positionM orU.
When the engine is running, the low
beam headlamps are switched on.
In low ambient light conditions, the
following lamps will switch on addition-
ally:

Tail and parking lamps

License plate lamps

Side marker lamps
Canada only:
The daytime running lamp mode is manda-
tory and therefore in a constant mode.When the engine is running and you shift
from a driving position to positionN orP,
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
positionC, the parking lamps and
the side marker lamps switch on
additionally

turn the exterior lamp switch to
positionB, the manual headlamp
mode has priority over the daytime
running lamp mode
The corresponding exterior lamps
switch on (
page 59).USA only
By default, the daytime running lamp mode
is deactivated. Activate the daytime
running lamp mode using the control
system, see “Setting daytime running lamp
mode (USA only)” (
page 183).
When the engine is running, and you turn
the exterior lamp switch to positionC
orB, the manual headlamp mode has
priority over the daytime running lamp
mode.
The corresponding exterior lamps switch
on (
page 146).
iWith the daytime running lamp mode activat-
ed and the engine running, you cannot switch off
the low beam headlamps manually.
iWith the exterior lamp switch in
positionM orU, 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 in positionB to permit activation of
the high beam headlamps.
iWith the daytime running lamp mode activat-
ed and the exterior lamp switch in positionM,
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 in positionB orU to permit
activation of the high beam headlamps.

151 Controls in detail
Lighting
Corner-illuminating front fog lamps*
The corner-illuminating front fog lamps
improve illumination of the area in the
direction into which you are turning.
The corner-illuminating front fog lamps will
operate with the engine running and with

the exterior lamp switch in
positionB (
page 146)
or

the exterior lamp switch in
positionU (
page 146)
or

the daytime running lamp mode
activated (
page 148)Driving forward
Switching on corner-illuminating front
fog lamps
Switch on the left or right turn signal
(
page 60), depending on whether
you are turning left or right.
The respective front fog lamp comes on
and illuminates the area in the
direction into which you are turning.
or
Turn steering wheel in desired direc-
tion.
The front fog lamp on the side of your
steering direction comes on.iWith the automatic headlamp mode
activated, the corner-illuminating front fog lamps
will only come on in low ambient lighting condi-
tions.
The corner-illuminating front fog lamps
function is not available at a vehicle speed
above25mph(40km/h).
iIf you are driving faster than
25 mph (40 km/h) or have the front fog lamps
switched on, the corner-illuminating function is
not available.iIf you have switched on the turn signal for
one side but turn the steering wheel in the
opposite direction, the corner-illuminating front
fog lamp comes on for the side indicated by the
turn signal.
The corner-illuminating front fog lamp remains lit
for a maximum of three minutes. Afterwards, it
goes out even if the turn signal is still switched
on.
iThe corner-illuminating front fog lamps tem-
porarily come on both sides of the vehicle if you
turn the steering wheel in one direction and then
again in the other direction shortly thereafter.
iThe corner-illuminating front fog lamps will
come on automatically depending on the steer-
ing angle, even if you did not switch on either
turn signal. If the corner-illuminating front fog
lamps came on automatically, they will also go
out automatically depending on the steering
angle.

153 Controls in detail
Lighting
Switching on hazard warning flasher
Press hazard warning flasher
switch1.
All turn signals are flashing.
Switching off hazard warning flasher
Press hazard warning flasher switch1
again.
Interior lighting
1Front left reading lamp, on/off
2Rear interior lighting, on/off
3Automatic interior lighting
4Front interior lighting, on/off
5Front right reading lamp, on/off
6Front right interior lamp
7Reading lamps
8Front left interior lampThe controls are located in the overhead
control panel.
Deactivating automatic control
Press switch3.
The interior lighting and the locator
lighting (
page 184) remain switched
off even when you

unlock the vehicle

remove the SmartKey from the
starter switch

open a door

open the tailgate
iWith the hazard warning flasher activated
and the combination switch set for either left or
right turn, only the respective left or right turn
signals will operate when the ignition is
switched on.
iIf the hazard warning flasher has been
activated automatically, press hazard warning
flasher switch1 once to switch it off.
!An interior lamp switched on manually does
not go out automatically.
Leaving an interior lamp switch in the ON
position for extended periods of time with the
engine turned off could result in a discharged
battery.
iThe interior lighting is factory-set to
automatic mode.

157 Controls in detail
Instrument cluster
Adjusting instrument cluster
illumination
Use button 1 or 3 to adjust the illumina-
tion brightness for the instrument cluster.
To brighten illumination
Press and hold button 3 until the
desired level of illumination is reached.
To dim illumination
Press and hold button 1 until the
desired level of illumination is reached.
Resetting the trip odometer
Make sure you are viewing the trip odome-
ter display (
page 159).
If it is not displayed, press buttonè
orÿ on the multifunction steering
wheel (
page 160) repeatedly until
the trip odometer appears in the multi-
function display.
Press and hold reset button 2
(
page 156) until the trip odometer is
reset.
Tachometer
The red marking on the tachometer
(
page 26) denotes excessive engine
speed.
To help protect the engine, the fuel supply
is interrupted if the engine is operated
within the red marking.
iThe instrument cluster illumination is
dimmed or brightened automatically to suit
ambient light conditions.
The instrument cluster illumination will also be
adjusted automatically when you switch on the
vehicle’s exterior lamps.!Avoid driving at excessive engine speeds, as
it may result in serious engine damage that is not
covered by the Mercedes-Benz Limited
Warranty.

158 Controls in detail
Instrument cluster
Outside temperature indicator
The outside temperature is indicated in the
multifunction display (
page 159).The temperature sensor is located in the
front bumper area. Due to its location, the
sensor can be affected by road or engine
heat during idling or slow driving. This
means that the accuracy of the displayed
temperature can only be verified by com-
parison to a thermometer placed next to
the sensor, not by comparison to external
displays (e.g. bank signs etc.).
When moving the vehicle into colder
ambient temperatures (e.g. when leaving
your garage), you will notice a delay before
the lower temperature is displayed.
A delay also occurs when ambient temper-
atures rise. This prevents inaccurate
temperature indications caused by heat
radiated from the engine during idling or
slow driving.
Warning!G
The outside temperature indicator is not de-
signed to serve as an ice-warning device and
is therefore unsuitable for that purpose.
Indicated temperatures just above the freez-
ing point do not guarantee that the road sur-
face is free of ice. The road may still be icy,
especially in wooded areas or on bridges.

163 Controls in detail
Control system
Menus, submenus and functions
Menu1Menu2Menu3Menu4Menu5
Standard displayAMG1
1AMG vehicles only.
AudioNavi*Airmatic*/Compass
(page 166)(page 168)(page 171)(page 173)(page 174)
Commands/submenus
Trip- and main odometerEngine oil temperatureSelecting radio stationRoute guidance
instructions, current
direction traveledAIRMATIC*
Checking tire inflation
pressureVehicle supply voltageSelecting satellite radio
station* (USA only)Compass
Checking coolant
temperatureRACETIMEROperating CD player
Calling up digital
speedometer or outside
temperatureOverall analysis
Calling up maintenance
service indicatorLap analysis
Checking engine oil level
iThe headings used in the menus table are
designed to facilitate navigation within thesystem and are not necessarily identical to those
shown in the control system displays.The first function displayed in each menu will
show you which part of the system you are in.

166 Controls in detail
Control system
Standard display menu
In the standard display, the main odometer
and the trip odometer appear in the multi-
function display.
1Trip odometer
2Main odometer
If you see another display, press
buttonè orÿ repeatedly until
the standard display appears.
Press buttonkorj to select
the functions in the standard display
menu.The following functions are available:Checking coolant temperature
FunctionPage
Checking tire inflation pressure382
Checking coolant temperature166
Calling up digital speedometer or
outside temperature167
Calling up maintenance service
indicator409
Checking engine oil level
(R 500 only)366
Warning!G

Driving when your engine is overheated
can cause some fluids which may have
leaked into the engine compartment to
catch fire. You could be seriously
burned.

Steam from an overheated engine can
cause serious burns which can occur
just by opening the hood. Stay away
from the engine if you see or hear steam
coming from it.
Stop the vehicle in a safe location away from
other traffic. Turn off the engine, get out of
the vehicle and do not stand near the vehicle
until the engine has cooled down.

167 Controls in detail
Control system
Press buttonk orj repeatedly
until the coolant temperature appears
in the multifunction display.Calling up digital speedometer or
outside temperature
Press buttonk orj repeatedly
until the digital speedometer or the
outside temperature appears in the
multifunction display.
Digital speedometer
Outside temperature
!Excessive coolant temperature triggers
a warning message in the multifunction
display (
page 455).
The engine should not be operated with a
coolant temperature above 248°F (120°C).
Doing so may cause serious engine damage
which is not covered by the Mercedes-Benz
Limited Warranty.
iDuring severe operating conditions, e.g.
stop-and-go city traffic, the coolant temperature
may rise close to 248°F (120°C).
iYou can select whether the digital speed-
ometer or the outside temperature is to be
displayed.
You can change the setting in the submenu
Instr. cluster via the function Status line
display
, see “Selecting display (digital speed-
ometer or outside temperature) for status
indicator” (
page 180).