
250 Driving instructions
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Parking Important!
It is advisable to set the parking brake whenever 
parking or leaving the vehicle. In addition, move 
selector lever to position “P”.
When parking on hills, always set the parking brake.
Wa r n i n g !
To reduce the risk of personal injury as a result of 
vehicle movement, before
 turning off the engine 
and leaving the vehicle, always:
1. Keep right foot on service brake pedal.
2. Firmly depress parking brake pedal.
3. Move the selector lever to position “P”.
4. Slowly release service brake pedal.
5. Turn front wheels towards the road curb.
6. Turn the electronic key to starter switch 
position 0 and remove, or press start- / stop 
button (vehicles with KEYLESS-GO).
7. Take the electronic key and the KEYLESS-GO-
card (vehicles with KEYLESS-GO) and lock 
vehicle when leaving. 

252 Driving instructions
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Specified tire pressures must be maintained. This 
applies particularly if the tires are subjected to high 
loads (e.g. high speeds, heavy loads, high ambient 
temperatures).
Aq uaplaning
Depending on the depth of the water layer on the road, 
aquaplaning may occur, even at low speeds and with 
new tires. Reduce vehicle speed, avoid track grooves in 
the road and apply brakes cautiously in the rain.Tire traction
The safe speed on a wet, snow covered or icy road is 
always lower than on a dry road.
You should pay particular attention to the condition of 
the road whenever the outside temperatures are close to 
the freezing point.
We recommend M+S rated radial-ply tires for the winter 
season for all four wheels to insure normal balanced 
handling characteristics. On packed snow, they can 
reduce your stopping distance as compared with 
summer tires. Stopping distance, however, is still 
considerably greater than when the road is not snow or 
ice covered.
Wa r n i n g !
Do not drive with a flat tire. A flat tire affects the 
ability to steer or brake the vehicle. You may lose 
control of the vehicle. Continued driving with a flat 
tire or driving at high speed with a flat tire will 
cause excessive heat build-up and possibly a fire.
Wa r n i n g !
If ice has formed on the road, tire traction will be 
substantially reduced. Under such weather 
conditions, drive, steer and brake with extreme 
caution. 

254 Driving instructions
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Important!
Use of snow chains is not permissible with tire sizes 
245 / 45 R18 or 275 / 40 R18.
Winter driving instructions
The most important rule for slippery or icy roads is to 
drive sensibly and to avoid abrupt acceleration, braking 
and steering maneuvers. Do not use the cruise control 
system under such conditions.
When the vehicle is in danger of skidding, move 
selector lever to position “N”. Try to keep the vehicle 
under control by corrective steering action.
Road salts and chemicals can adversely affect braking 
efficiency. Increased pedal force may become necessary 
to produce the normal brake effect. We therefore 
recommend depressing the brake pedal periodically 
when traveling at length on salt-strewn roads. This can 
bring road salt impaired braking efficiency back to 
normal. A prerequisite is, however, that this be done 
without endangering other drivers on the road.If the vehicle is parked after being driven on salt treated 
roads, the braking efficiency should be tested as soon as 
possible after driving is resumed while observing the 
safety rules in the previous paragraph.
Wa r n i n g !
If the vehicle becomes stuck in snow, make sure 
that snow is kept clear of the exhaust pipe and 
from around the vehicle with engine running. 
O t h e rw i s e ,  d e a d ly  c a r b o n  m o n ox i d e  ( CO )  ga s e s  m ay  
enter vehicle interior resulting in unconsciousness 
and death.To assure sufficient fresh air ventilation, open a 
window slightly on the side of the vehicle not 
facing the wind. 

259 Driving systems
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index 3Canceling
To cancel the cruise control, briefly push lever to 
position 3.
When you step on the brake pedal or the vehicle 
speed drops below approximately 19 mph 
(30 km / h), for example when driving upgrade, the 
cruise control will be canceled.
If the cruise control cancels by itself and remains 
inoperative until the engine is restarted, have the 
system checked at your authorized Mercedes-Benz 
Center as soon as possible.4Resume
If the lever is briefly pushed to position 4 when 
driving at a speed exceeding approximately 19 mph
(30 km / h), the vehicle resumes the speed which 
was set prior to the cancellation of the cruise 
control.
The selected speed is shown for approximately 
5 seconds in the multifunction display, and the 
corresponding speedometer segments from the 
selected speed to the vehicle maximum speed are 
illuminated.
The last memorized speed is canceled when the 
electronic key in the starter switch is turned to 
position 1 or 0.
Important!
Moving gear selector lever to position “N” switches the 
cruise control off. 

260 Driving systems
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Notes:
If the engine does not brake the vehicle sufficiently 
while driving on a downgrade, the speed you set on the 
cruise control may be exceeded. In this case the 
automatic transmission shifts down (max. to 3rd gear) 
to maintain the set cruise control speed by using the 
engine’s braking power.
As soon as the grade eases, the automatic transmission 
shifts up again dependent on the selector lever position.
Nevertheless, in some cases you may have to step on the 
brake pedal to slow down. In this case the cruise control 
is switched off.
Use the lever to resume the previously set speed.
The “CRUISE CONTROL - - -” message is displayed on 
the multifunction display when any attempt is made to 
store speeds below 19 mph (30 km / h) or when an 
attempt is made to recall a speed when no speed has 
been stored – the cruise control remains switched off.
See malfunction and warning messages on page 325 if 
the cruise control has a malfunction.
Wa r n i n g !
Only use the cruise control if the traffic and 
weather conditions make it advisable to travel at a 
steady speed.• The use of cruise control can be dangerous on 
winding roads or in heavy traffic because 
conditions do not allow safe driving at a steady 
speed.
• The use of cruise control can be dangerous on 
slippery roads. Rapid changes in tire adhesion 
can result in wheel spin and loss of control.The “Resume” function should only be operated if 
the driver is fully aware of the previously set speed 
and wishes to resume this particular preset speed. 

261 Driving systems
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Distronic (DTR)
(optional)
When activated the Distronic system increases driving 
convenience, for example over long distances, as it 
automatically maintains a speed set by the driver by 
actively regulating the throttle setting. It also maintains 
within certain limitations a preset distance to a vehicle 
ahead.
With Distronic switched off, the multifunction display 
continues to show the distance to the vehicle ahead, if 
so selected, see page 275. 
The distance warning function can be activated 
separately, see page 272.
In Distronic mode, if the distance sensor detects a 
slower moving vehicle directly ahead, your vehicle 
speed will be reduced to the extent permitted by 
reduced throttle and up to 20% of vehicle braking power, 
so that you follow that vehicle at a preset distance, see 
page 273.
Maximum range of detection is approximately 500 ft. 
(150 m).Any given speed between 25 mph (Canada: 40 km/h) 
and 110 mph (Canada: 180 km/h) can be maintained 
with the Distronic by operating the control lever on the 
steering column.
Wa r n i n g !
Distronic is a convenience system, its speed 
adjustment reduction capability is intended to 
make cruise control more effective and usable 
when traffic speeds vary. It is not, however, 
intended to nor does it replace the need for extreme 
care. The responsibility for the vehicle speed and 
the distance to the vehicle ahead, including most 
importantly brake operation to assure safe stopping 
distance, rests always with the driver.Distronic cannot take street and traffic conditions 
into account.Wa r n i n g !
Distronic requires familiarity with its operational 
characteristics. We strongly recommend that you 
review the following information carefully before 
operating the system. 

265 Driving systems
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index •For a more precise setting the speed can be 
increased in increments of 1 mph (Canada: 1 km/h) 
by briefly pulling the control lever in direction (4).
Caution!
If the driver’s foot is not fully removed from the 
accelerator pedal, the message “DISTRONIC OVERRIDE” 
is displayed while the Distronic control system is being 
overridden and it will not regulate the preset vehicle 
speed and following distance. The vehicle speed and 
following distance will be determined only by the 
accelerator pedal position.Invalid attempts to activate
The multifunction display will show “––– MPH” during 
invalid attempts to activate Distronic. Distronic will not 
activate in the following situations:
•below a speed of approx. 25 mph 
(Canada: 40 km/h),
•while the electronic stability program (ESP) is 
switched off – ESP warning lampv in 
speedometer dial is illuminated, see page 112, 
•by moving the distronic control lever in “RESUME” 
direction (4) when no speed is stored in memory,
•during the initialization and self-test phase after the 
engine is started – this can take up to 2 minutes,
•while depressing the service brake pedal,
•while the parking brake is set – check ;warning 
lamp (Canada: !) in instrument cluster, see 
page 112,
•with the gear selector lever in position “P”, “R” 
or “N” – check gear range indicator display in 
instrument cluster, see page 112.
See page 332 for malfunction and warning messages if 
the Distronic is malfunctioning.
Wa r n i n g !
Distronic brakes (up to 20% of vehicle braking 
power) the vehicle to restore the preset distance or 
to maintain the speed. The brake pedal is 
automatically applied as this happens.Keep driver’s foot area clear at all times, including 
the area under the brake pedal. Objects stored in 
this area may impair pedal movement which could 
interfere with the braking ability of the Distronic 
system.Do not place your foot under the brake pedal – your 
foot could become caught. 

266 Driving systems
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Deactivation of Distronic
Briefly move the distronic control lever in “OFF” 
direction (3) – the stored speed remains in the memory 
until the electronic key in the starter switch is turned to 
position 1 or 0.
Distronic is also deactivated if:
•the service brake pedal is depressed, 
•the parking brake is activated,
•the vehicle decelerates to less than approximately 
25 mph (Canada: 40 km/h), e.g. while maintaining 
the distance to the vehicle ahead,•the gear selector lever is moved to position “N”,
•the electronic stability program (ESP) is active,
•the electronic stability program (ESP) is switched off 
manually.
Note:
A signal sounds and the message “DISTRONIC OFF” 
appears for 5 seconds in the multifunction display 
everytime Distronic is deactivated (except when moving 
distronic control lever in “OFF” direction).
Wa r n i n g !
The Distronic switches off and releases the brakes 
when the vehicle decelerates below the minimum 
speed of 25 mph (Canada: 40 km/h) by operation of 
the system. At that time, the driver must apply the 
brakes in order to reduce vehicle speed further or 
bring it to a stop.