144 Controls in detailAutomatic transmission*Program mode selector switch
The program mode selector switch is 
located on the lower part of the center 
console.
1Program mode selector switch
S Sport For standard driving
C Comfort For comfort driving
Press program mode selector 
switch1 repeatedly until the letter of 
the desired shift program appears in 
the multifunction display (
page 109).
SelectCfor comfort driving:
The vehicle starts out in second 
gear (both forward and reverse) for 
gentler starts. This does not apply if 
full throttle is applied or gear 
range1 is selected.
Traction and driving stability are 
improved on icy roads.
Upshifts occur earlier even when 
you give more gas. The engine then 
operates at lower rpms and the 
wheels are less likely to spin.
The power transmission ratio for 
gear selector lever positionR 
changes depending on the program 
mode selected (SorC).
!Never change the program mode when 
the gear selector lever is out of 
positionP. This could result in a 
change of driving characteristics for 
which you may not be prepared. 
168 Controls in detailAudio systemWeather band
Press the
WB key.
The weather band station last selected 
is tuned in.
Select the desired weather band 
station with buttons4 to7.
If a station cannot be tuned in, a scan 
is automatically started.
Pressf ore button. The next 
receivable weather band station is 
tuned in.
Satellite radio (SAT)* (USA only)Sirius Satellite Radio provides 100 chan-
nels of digital-quality radio, among others 
music, sports, news, and entertainment, 
free of commercials. Sirius Satellite Radio 
uses a fleet of high-power satellites to 
broadcast 24 hours per day 
coast-to-coast.
This diverse, satellite-delivered program-
ming is available for a monthly subscrip-
tion fee. 
For more information, call the Sirius ser-
vice or contact www.siriusradio.com.
Program categories
The channels are categorized. The catego-
ries allow you to tune to stations broad-
casting a certain type of program 
(PTY mode) (
page 171).
iAdditional optional satellite radio 
equipment and a subscription to satel-
lite radio service provider is required 
for the satellite radio operation de-
scribed here. Feature description is 
based on preliminary information avail-
able at time of printing.
At time of printing, no date for availabil-
ity of optional equipment required for 
satellite radio operation had been set. 
Contact your authorized Mecedes-Benz 
Center for details and availability for 
your vehicle.
Satellite radio service may be unavail-
able or interrupted from time to time 
for a variety of reasons, such as envi-
ronmental or topographic conditions 
and other things we can't control. Ser-
vice might also not be available in cer-
tain places (e.g., in tunnels, parking 
garages, or within or next to buildings) 
or near other technologies. 
197 Controls in detail
Loading
Loading
Roof rack*
Mount the roof rack only between the fas-
tening points1 and in the recess of the 
rubber strip2.
Luggage cover
Removal
Take off securing straps1.
Pull cover towards rear2.
Installation
Place cover into holder.
Attach securing straps to trunk lid.
Split rear bench seat
To expand the cargo area, you can fold 
down the left and right rear seat backrests.
The two sections can be folded down sep-
arately.
Warning!
G
Use only roof racks approved by 
Mercedes-Benz for your vehicle model to 
avoid damage to the vehicle. Follow manu-
facturer’s installation instructions.
!Do not place anything on the luggage 
cover below the rear window.
Warning!
G
When expanding the luggage compartment, 
always fold the seat cushions fully forward.
Unless you are transporting cargo, the back-
rests must remain properly locked in the up-
right position.
In an accident, during hard braking or sud-
den maneuvers, loose items will be thrown 
around inside the vehicle, and cause injury 
to vehicle occupants unless the items are 
securely fastened in the vehicle.