warning MERCEDES-BENZ SLR CLASS 2007 Repair Manual

145 Controls in detail
Audio system
Audio system
Audio and telephone, operation
These instructions are intended to help
you become familiar with your
Mercedes-Benz audio system. They con-
tain useful tips and a detailed description
of the user functions.Operating safetyLocation of the audio system
The audio system control panel is located
behind a cover in the upper part of the cen-
ter console.
1Cover
Briefly press on the lower part of
cover1.
The cover opens automatically.
Warning!G
In order to avoid distraction which could
lead to an accident, the driver should enter
system settings with the vehicle at a stand-
still and operate the system only when road
and traffic conditions permit. Always pay full
attention to traffic conditions first before
operating system controls while driving.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your car is cover-
ing a distance of 44 feet (approximately
14 m) every second.
Warning!G
Any alterations made to electronic compo-
nents can cause malfunctions.
The radio, amplifier, CD changer and
telephone are interconnected. When one of
the components is not operational or has
not been removed/replaced properly, the
function of other components may be im-
paired.
This condition might seriously impair the
operating safety of your vehicle.
We recommend that you have any service
work on electronic components carried out
by an authorized Mercedes-Benz Center.

155 Controls in detail
Audio system
Track selection
Press theTRK key.
The current track will be displayed as
SIDE 1 or SIDE 2.
You can switch sides at any time.
The side will be changed automatically
at the end of the tape.Cassette eject
Press eject button3.
The display folds down and the cas-
sette is ejected. The system will switch
back to radio mode automatically.
Fold display panel back up and press
gently on the display panel frame to
lock it.Track search
Track search forward
Pressf button.
SEEK FWD will appear in the display.
Track search will run the tape forward
to the start of the next track and switch
to Play.
iA warning signal will sound after 20 seconds
if the display panel is left in the down position.
Fold display panel back up. If the display panel is
not closed, a warning signal will sound and the
radio will be muted.
!Do not press directly on the display face.
Otherwise the display will be damaged.
iThe cassette will not be ejected when the
system is switched off or switched to another
operating mode.
iThe beginning of a track can only be found if
there is pause of at least 4 seconds between
tracks.

158 Controls in detail
Audio system
CD changer operation
General notes
Should excessively high temperatures oc-
cur while in CD mode,
CD TEMP HIGH will
appear in the display and the CD will be
muted. The unit will then switch back to
the last operating mode used until the tem-
perature has decreased to a safe operating
level.
Should excessively low temperatures
occur while in CD mode,
CD TEMP LOW will
appear in the display, but the CD will
continue to play.
Handle CDs carefully to prevent interfer-
ence during playback. Avoid fingerprints
and dust on CDs. Do not write on CDs or
apply any labels or other material to them.Only use original CDs. Using copied CDs
may create problems during playback.
Clean CDs from time to time with a com-
mercially available cleaning cloth. Do not
use solvents, anti-static sprays, etc. for
cleaning. Replace the CD in its case after
use. Protect CDs from heat and direct
sunlight.
Only use CDs, which bear the label shown
and that conform to the compact disc
digital audio standard (IEC 60908). You
can therefore only use CDs with a
maximum thickness of 1.3 mm.
iUse of CDs which do not meet this standard
may cause damage to the CD changer. Do not
play single-CDs (80 mm) with an adapter.
Your CD drive has been designed to play CDs
which correspond to the IEC 60908 standard.
If you insert thicker data carriers, e.g. ones that
have data on both sides (one side with DVD data,
the other side with audio data), they cannot be
ejected and will damage the drive.
Warning!G
The CD changer is a Class 1 laser product.
There is a danger of invisible laser radiation
if the cover is opened or damaged.
Do not remove the cover. The CD changer
does not contain any parts which can be ser-
viced by the user. For safety reasons, have
any service work which may be necessary
performed only by qualified personnel.

162 Controls in detail
Audio system
Telephone operationVarious car telephone functions and oper-
ating steps for the car telephone can be
performed and displayed via the audio
system.
Further operating instructions not covered
here can be found in the operating
instructions for the multifunction steering
wheel and the telephone.
Switching on the telephone
Pressh button.
If you have programmed an unlock
code for the telephone, you must enter
the code now.
Enter the code using buttons4
toM.
If necessary, correct number entered
with the
CLR key. Press key briefly to
delete the last digit entered; press key
and hold to delete the complete
number.
Press theOK key after entering correct
code.
The telephone is unlocked. If you have
entered the wrong code, you must re-
peat the entering procedure with the
correct code.
Switching off the telephone
Pressh button repeatedly until
PHONE OFF appears in the display.
The receiving symbol in the display
disappears.
Adjusting the volume
Turn control knoba during tele-
phone operation.
The volume increases or decreases de-
pending on the direction in which the
knob is turned.
Warning!G
Please do not forget that your primary re-
sponsibility is to drive the vehicle. A driver’s
attention to the road must always be
his/her primary focus when driving. For
your safety and the safety of others, we rec-
ommend that you pull over to a safe location
and stop before placing or taking a
telephone call.
If you choose to use the telephone
1 while
driving, please use the hands-free device
and only use the telephone when road,
weather and traffic conditions permit. Some
jurisdictions prohibit the driver from using a
mobile telephone while driving a vehicle.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is
covering a distance of 44 feet
(approximately 14 m) every second.
1Observe all legal requirements.
iThe volume can be adjusted separately for
the telephone and radio.

166 Controls in detail
Audio system
Emergency calls “911”
The following describes how to dial a “911”
emergency call using the audio system
head unit when a Mercedes-Benz specified
mobile phone is inserted in the phone
cradle. Unless otherwise specified, the de-
scriptions refer to the audio system head
unit.
Consult the separate telephone operating
instructions that came with your mobile
phone for information on how to place a
“911” emergency call on the mobile
phone. The following conditions must be met for a
“911” emergency call:

Telephone must be switched on.

The corresponding mobile communica-
tions network must be available.
If you cannot make an emergency call, you
will have to initiate rescue measures
yourself. Placing a “911” emergency call using
audio head unit with the phone locked
Press hbutton to switch to
telephone operation.
CODE? appears in the audio display.
Press button4 on the audio head
unit until
911 appears in the audio
display.
911 appears in the audio display while
the telephone establishes the connec-
tion.
Wait until the emergency call center
answers, then describe the emergency.
Warning!G
The “911” emergency call system is a public
service. Using it without due cause is a
criminal offense.
iEmergency calls may not be possible with all
telephone networks or if certain network servic-
es and/or telephone functions are active. Check
with your local service providers.

169 Controls in detail
Automatic transmission
Automatic transmission
For information on driving with an auto-
matic transmission, see the “Getting
started” section (
page 47).
Your vehicle’s transmission adapts its gear
shifting process to your individual driving
style by continually adjusting the shift
points up or down. These shift point adjust-
ments are performed based on current
operating and driving conditions.
If the operating conditions change, the
automatic transmission reacts by
adjusting its gear shift program.
Gear selector lever
The gear selector lever is located on the
lower part of the center console.
Gearshift pattern for automatic
transmission
P Park position
R Reverse gear
N Neutral
D Drive position
iDuring the brief warm-up, transmission up-
shifting is delayed. This allows the catalytic con-
verter to heat up more quickly to operating
temperature.
Warning!G
Make sure that absolutely no objects are ob-
structing the pedals’ range of movement.
Keep the driver’s footwell clear of all obsta-
cles. If there are any floormats or carpets in
the footwell, make sure that the pedals still
have sufficient clearance.
During sudden driving or braking maneuvers
the objects could get caught between the
pedals. You could then no longer brake or
accelerate. This could lead to accidents and
injury.
iThe current gear selector lever positionP,
R,N orD appears in the right multifunction
display (
page 117).

170 Controls in detail
Automatic transmission
Shifting procedure
The automatic transmission selects indi-
vidual gears automatically, depending on:

the gear selector lever drive position D
(
page 171) with gear ranges
(
page 174)

the selected shift program
(C/MAN/S)(
page 175)

the position of the accelerator pedal
(
page 173)

the vehicle speed
The current gear selector lever position
(
P/R/N/D), the gear range (1/2/3/4) and
the shift program (
C/M/S) are shown in the
standard display (
page 117).When the gear selector lever is in drive
positionD, you can influence transmission
shifting by:

limiting the gear range

changing gears manually
Warning!G
It is dangerous to shift the gear selector
lever out of park positionP or neutralN if
the engine speed is higher than idle speed.
If your foot is not firmly on the brake pedal,
the vehicle could accelerate quickly forward
or reverse. You could lose control of the
vehicle and hit someone or something. Only
shift into gear when the engine is idling
normally and when your right foot is firmly
on the brake pedal.
!Allow engine to warm up under low load use.
Do not place full load on the engine until the
operating temperature has been reached
(
page 307).
Shift into park position P or reverse gearR only
when the vehicle is stopped.
Avoid spinning of a drive wheel for an extended
period when driving off on slippery road
surfaces. This may cause serious damage to the
drivetrain which is not covered by the
Mercedes-Benz Limited Warranty.

172 Controls in detail
Automatic transmission
!Coasting the vehicle, or driving for any other
reason with gear selector lever in neutralN can
result in transmission damage that is not cov-
ered by the Mercedes-Benz Limited Warranty.Warning!G
Getting out of your vehicle with the gear
selector lever not fully engaged in park
positionP is dangerous. Also, park
positionP alone is not intended to or capa-
ble of preventing your vehicle from moving,
possibly hitting people or objects.
Always set the parking brake in addition to
shifting to park positionP (
page 55).
When parked on an incline, turn the front
wheels towards the road curb.
Do not park this vehicle in areas where
combustible materials such as grass, hay or
leaves can come into contact with the hot
exhaust system, as these materials could be
ignited and cause a vehicle fire.
Warning!G
When leaving the vehicle, always remove the
SmartKey from the starter switch, take it
with you, and lock the vehicle. Do not leave
children unattended in the vehicle, or with
access to an unlocked vehicle. Children
could move the gear selector lever from
park positionP, which could result in an
accident and/or serious personal injury.

173 Controls in detail
Automatic transmission
Driving tips
Accelerator position
Your driving style influences the
transmission’s shifting behavior:
Less throttle Earlier upshifting
More throttle Later upshifting
Kickdown
Use kickdown when you want maximum
acceleration.
Press the accelerator past the point of
resistance.
Depending on the engine speed the
transmission shifts into a lower gear.
Ease on the accelerator when you have
reached the desired speed.
The transmission shifts up again.Stopping
When you stop briefly, e.g. at traffic lights:
Leave the transmission in gear.
Hold the vehicle with the brake.
When you stop longer with the engine
idling and/or on a hill:
Set the parking brake.
Move the gear selector lever to park
positionP.Maneuvering
When you maneuver in tight areas,
e.g. when pulling into a parking space:
Control the vehicle speed by gradually
releasing the brakes.
Accelerate gently.
Never abruptly step on the accelerator.
Working on the vehicle
iKickdown in manual shift program MAN is
not possible.
In kickdown operation, it is not possible to
change gear with the steering wheel gear shift
buttons.
Warning!G
When working on the vehicle, set the
parking brake and move gear selector lever
to positionP. Otherwise the vehicle could
roll away.

176 Controls in detail
Automatic transmission
Limiting gear range
Briefly press the gear selector lever to
the left in theD-direction.
The transmission will shift to the next
lower gear as permitted by the shift
program. This action simultaneously
limits the gear range of the trans-
mission (
page 174).Extending gear range
Briefly press the gear selector lever to
the right in theD+direction.
The transmission will shift to the next
higher gear as permitted by the shift
program. This action simultaneously
extends the gear range of the
transmission.
Canceling gear range limit
Press and hold the gear selector lever
in theD+direction until
D reappears in
the right multifunction display.
The transmission will shift from the cur-
rent gear range directly to gear
rangeD.Shifting into optimal gear range
Press and hold the gear selector lever
in theD-direction.
The transmission will automatically se-
lect the gear range suited for optimal
acceleration and deceleration. This
may involve shifting down one or more
gears.
Warning!G
On slippery road surfaces, never downshift
in order to obtain braking action. This could
result in drive wheel slip and reduced
vehicle control. Your vehicle’s ABS will not
prevent this type of loss of control.
iTo avoid overrevving the engine when down-
shifting, the transmission will not shift to a lower
gear if the engine’s max. speed would be
exceeded.
iIf you press on the accelerator when the en-
gine has reached its rpm limit, the transmission
will upshift beyond any gear range limit selected.