379 Controls in detail
Instrument cluster
Tachometer
The red marking on the tachometer de-
notes excessive engine speed.
To help protect the engine, the fuel supply
is interrupted if the engine is operated
within the red marking.
Outside temperature indicator
The outside temperature indicator is on
the bottom left-hand side of the instru-
ment cluster.
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. There-
fore, the accuracy of the displayed temper-
ature can only be verified by comparison 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 ambi-
ent 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 tem-
perature indications caused by heat
radiated from the engine during idling or
slow driving.
Fuel gauge
The fuel gauge is on the left-hand side of
the instrument cluster (
page 28). Once
the fuel level has fallen below the reserve
mark, the yellow segment indicator for the
fuel reserve comes on (page 550).
!
Excessive coolant temperature triggers a
warning in the multifunction display
(
page 588).
The engine should not be operated with the cool-
ant temperature above 248°F (120°C), i.e. in
the red zone of the coolant temperature gauge.
Doing so may cause serious engine damage
which is not covered by the Mercedes-Benz Lim-
ited Warranty.
i
During severe operating conditions,
e.g. stop-and-go traffic, the coolant temperature
may rise close to 248°F (120°C), i.e. close to
the red zone of the temperature gauge.
!
Avoid driving at excessive engine speeds, as
it may result in serious engine damage that is not
covered by the Mercedes-Benz Limited Warran-
ty.
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.
382 Controls in detailDriving systems
Remove your foot from the accelerator
pedal.
Cruise control is activated.
The last set speed appears in the
multifunction display for approxi-
mately 5 seconds.
The corresponding speedometer
segments from the selected speed
to the vehicle maximum speed in
the multifunction display are illumi-
nated.
The set speed is shown by a triangle
in the speedometer.Canceling cruise control
There are several ways to cancel cruise
control:
Step on the brake pedal.
Cruise control is canceled. The last
speed set is stored for later use.
or
Briefly push the cruise control lever in
direction of arrow3.
Cruise control is canceled. The last
speed set is stored for later use.
i
On uphill grades, cruise control may not be
able to maintain the set speed. Once the grade
eases, the set speed will be resumed.
On downhill grades, cruise control maintains the
set speed with braking from the vehicle’s braking
system. In addition, on longer downhill grades
the automatic transmission will automatically
downshift.
i
Upon switching off the engine, the last
stored speed is deleted.
i
Cruise control switches off automatically
when
you step on the brake pedal
the vehicle is secured with the parking brake
In this case the segments in the multifunc-
tion display go out and no warning sounds.
the vehicle speed is below 20 mph
(30 km/h)
the ESP
® is in operation or switched off with
the ESP® switch (
page 73)
you set the automatic transmission toN
while driving
The segments in the multifunction display go out,
and an acoustic warning sounds.
!
Setting the automatic transmission toN
while driving cancels cruise control. However,
the automatic transmission should not be set
toN while driving except to coast when the vehi-
cle is in danger of skidding (e.g. on icy roads).
i
Depressing the accelerator pedal does not
deactivate cruise control. After brief accelera-
tion (e.g. for passing), cruise control will resume
the last speed set.
384 Controls in detailDriving systems
Release the cruise control lever.
The vehicle set speed decreases in in-
crements 1 mph (Canada: 1 km / h).
Adjustment in 5 mph
(Canada: 10 km/h) increments
Briefly press the cruise control lever
down past the resistance point in
direction of arrow2 (
page 381).
Release the cruise control lever.
The vehicle set speed decreases in in-
crements 5 mph (Canada: 10 km / h).
Setting to last stored speed
(“Resume” function)
Briefly pull the cruise control lever in
the direction of arrow4 (
page 381).
The cruise control resumes to the last
set speed or if no speed is stored, it will
set and store the current speed.
Remove your foot from the accelerator
pedal.
The last set speed appears in the multi-
function display for approximately
5 seconds, and the corresponding speed-
ometer segments from the selected speed
to the vehicle maximum speed are illumi-
nated.
Warning!
G
You can decrease the vehicle set speed in
5 mph (Canada 10 km/h) increments. When
using this feature, keep in mind that it may
take a brief moment until the vehicle has
reached the set speed.
Decelerate the vehicle set speed to a value
that the prevailing road conditions permit.
Otherwise, sudden and unexpected deceler-
ation of the vehicle could cause an accident
and/or serious injury to you and others.i
The set speed value is decreased in 5 mph
(Canada: 10 km/h) increments each time you
press the cruise control lever down past the re-
sistance point.
i
The new speed is set and the vehicle will de-
celerate. Keep in mind that it may take a brief
moment until the vehicle has reached the set
speed.Warning!
G
The set speed stored in memory should only
be set again if prevailing road conditions
permit. Possible acceleration or decelera-
tion differences arising from returning to the
preset speed could cause an accident
and/or serious injury to you and others.
i
The last stored set speed is deleted when
the engine is turned off.
387 Controls in detail
Driving systems
DISTRONIC Plus displays in the speed-
ometer dial
1Speed of the vehicle ahead
2Set speed
If DISTRONIC Plus is activated, the
marker2 indicates the set speed.
Switch off DISTRONIC Plus:
when changing from the left to the right
lane if vehicles are moving more slowly
in the left lane
when entering a turn lane or highway off
ramp
in complex driving situations, such as in
highway construction zones
In these situations, DISTRONIC Plus will
continue to maintain the set speed unless
deactivated.
DISTRONIC Plus is designed and intended
only to maintain a set speed and keep a set
distance from moving objects in front of it.
i
Do not use DISTRONIC Plus if you are driv-
ing on a road with steep uphill or downhill slopes.
i
In certain countries and near radio-astrolog-
ical facilities, you must switch off the radar sys-
tems (page 256).
i
Due to its radar-emitting nature DISTRONIC
Plus may have an appearance similar to a radar
detector to law inforcement officials. You may
want to refer to this section of your Operator’s
Manual when asked.
i
USA only:
This device complies with Part 15 of the FCC
Rules. Operation is subject to the following two
conditions:
(1) This device may not cause harmful interfer-
ence, and
(2) this device must accept any interference re-
ceived, including interference that may
cause undesired operation.
Any unauthorized modification to this device
could void the user’s authority to operate the
equipment.
i
Canada only:
This device complies with RSS-210 of Industry
Canada. Operation is subject to the following
two conditions:
(1) This device may not cause interference, and
(2) this device must accept any interference re-
ceived, including interference that may
cause undesired operation of the device.Any unauthorized modification to this device
could void the user’s authority to operate the
equipment.
i
The vehicle speed displayed on the speed-
ometer can briefly vary from the speed setting
on the DISTRONIC Plus system.
389 Controls in detail
Driving systems
Displaying the distance graphic
In the “Assistance” menu under “Distance
display” you see the current settings for
DISTRONIC Plus. The information shown in
the multifunction display depends on
whether DISTRONIC Plus is activated or
deactivated.
Press ( or & to select the
“Assistance” menu.
Press % or $ to select the
“Distance display” function.
Press #.
The DISTRONIC Plus distance graphic
appears and you will see one of the fol-
lowing displays on the multifunction
display.DISTRONIC Plus activated
When you turn DISTRONIC Plus on, you will
see the set speed in the multifunction dis-
play for about 5 seconds. You then see the
following display in the multifunction dis-
play.
1DISTRONIC Plus activated
2Your vehicle
3Preset distance threshold to vehicle
ahead
4Vehicle ahead, if detectedDISTRONIC Plus deactivated
If DISTRONIC Plus is deactivated, the stan-
dard display of DISTRONIC Plus appears in
the multifunction display.
1Symbol for activated distance warning
function
2Vehicle ahead, if detected
3Actual distance to vehicle ahead
4Preset distance threshold to vehicle
ahead
5Your vehicle
i
For activating or deactivating the DISTRON-
IC Plus system, see “Activating
DISTRONIC Plus” (
page 390) or “Activating
DISTRONIC Plus” (page 395).
For activating or deactivating the distance warn-
ing function, see “Distance warning function*
activating/deactivating” (
page 252).
390 Controls in detailDriving systemsDISTRONIC Plus lever
The DISTRONIC Plus system is operated by
means of the DISTRONIC Plus lever.
1Setting current or higher speed
Adjustment in 1 mph or 5 mph
increments (Canada: 1 km/h or
10 km/h)
2Setting current or lower speed
Adjustment in 1 mph or 5 mph
increments (Canada: 1 km/h or
10 km/h)
3Canceling DISTRONIC Plus
4Activating DISTRONIC Plus or resum-
ing to last set speed
5Setting target distanceActivating DISTRONIC PlusYou can activate DISTRONIC Plus when:
you are driving slower than 20 mph
(30 km/h) and DISTRONIC Plus has
detected a vehicle ahead of you
you are driving above 20 mph
(30 km/h)
If DISTRONIC Plus has not been activated
after pressing the DISTRONIC Plus lever,
you will see the message: “DISTRONIC
PLUS Off” in the multifunction display.
In the following cases you cannot activate
DISTRONIC Plus:
up to 2 minutes after starting the en-
gine
if the engine is switched off
if you step on the brake pedal while
driving
the vehicle is secured with the electric
parking brake
Warning!
G
When DISTRONIC Plus is braking, the brake
pedal is retracted (i.e. depressed automati-
cally). The pedals’ range of motion must not
be impeded by any obstacles:
Do not place any objects in the footwell.
Make sure that the floor mats and car-
pets are securely in place.
Do not rest your foot underneath the
brake pedal, as it could otherwise be
trapped.
You could otherwise cause an accident and
injure yourself and others.
Warning!
G
When DISTRONIC Plus is switched on, the
vehicle can be braked. You should therefore
switch off DISTRONIC Plus if the vehicle
must be towed.
i
The maximum speed you can set is 124 mph
(200 km/h).
391 Controls in detail
Driving systems
if the gear selector lever is in
positionP, R, or N
if ESP
® is switched off
if the hood is open
if the driver’s door is open and the driv-
er has not fastened his or her seat belt
if the radar sensors are switched off
(page 256).
Switching on while driving
Tap DISTRONIC Plus lever up1 or
down2 until desired speed is set.
DISTRONIC Plus is switched on.
or
Pull DISTRONIC Plus lever briefly in di-
rection of arrow4 to call up speed
last set (
page 395).
DISTRONIC Plus is switched on.
Take your foot off the accelerator ped-
al.
Your vehicle adapts its speed to the ve-
hicle ahead, observing the set speed as
a maximum value.
Switching on when approaching a sta-
tionary vehicle
If the vehicle in front of you is stationary,
you can only switch on DISTRONIC Plus if
your vehicle is also at a standstill.
Tap DISTRONIC Plus lever up1 or
down2 until desired speed is set.
DISTRONIC Plus is switched on.
or
Pull DISTRONIC Plus lever briefly in di-
rection of arrow4 to call up speed
last set (
page 395).
DISTRONIC Plus is switched on.
i
Under 20 mph (30 km/h), you can only
switch on DISTRONIC Plus if the vehicle ahead of
you has been detected and is shown on the mul-
tifunction display. If you no longer see the vehi-
cle in front of you on the multifunction display
and if it is no longer detected because it has
changed lanes, for example, DISTRONIC Plus
switches off and you will hear a signal.
i
If you do not completely lift your foot off the
accelerator pedal, the message“DISTRONIC
PLUS passive” appears on the multifunction dis-
play. The distance to a slower-driving vehicle will
not be set. You will drive at the speed you dictate
by pressing the accelerator pedal.
i
It is helpful to switch on the DISTRONIC Plus
display in the instrument cluster since you can
only switch on DISTRONIC Plus under a speed of
20 mph (30 km/h) when a vehicle has been de-
tected in front of you.
i
You can adjust the set speed using the
DISTRONIC Plus lever and the target distance
using the distance setting switch on the
DISTRONIC Plus lever (
page 396).
i
The distance warning function will still issue
warnings even when DISTRONIC Plus is switched
off if you have activated it on using the instru-
ment cluster control system (
page 252).
393 Controls in detail
Driving systems
Once DISTRONIC Plus has stopped your
vehicle and it is at a standstill, it remains
stationary; the brake pedal does not need
to be depressed.
Setting the current speed
Accelerate or decelerate to the desired
speed.
Briefly lift the DISTRONIC Plus lever in
the direction of arrow1 or depress in
the direction of arrow2.
DISTRONIC Plus is activated and the
current speed is set.
Remove your foot from the accelerator
pedal.Setting a higher speed
You can increase the set speed in two stag-
es.
Adjustment in 1 mph (Canada: 1 km/h)
increments
Briefly lift the DISTRONIC Plus lever to
the resistance point in direction of
arrow1 (
page 381).
Release the DISTRONIC Plus lever.
The vehicle speed increases in incre-
ments of 1 mph (Canada: 1 km / h).
Adjustment in 5 mph
(Canada: 10 km/h) increments
i
After a short while, your vehicle is secured in
place by the electric parking brake so that the
operating brake can be relieved of load.
i
Depending on the following distance set us-
ing the distance setting switch on the DISTRON-
IC Plus lever, your vehicle will stop approx.
13.1 ft. (4 m) away from the vehicle in front of
you.
i
If you do not take your foot off of the accel-
erator completely, the following message will ap-
pear in the multifunction display:
DISTRONIC PLUS passive
The distance to a slower moving vehicle in front
of you will not be set. Your vehicle speed will
then be determined only by the accelerator ped-
al position.
i
The set speed value is increased in 1 mph
(Canada: 1 km/h) increments each time you lift
the DISTRONIC Plus lever to the resistance
point.
Warning!
G
You can increase the vehicle speed in 5 mph
(Canada 10 km/h) increments. When using
this feature, keep in mind that it may take a
brief moment until the vehicle has reached
the set speed.
Increase the vehicle speed to a value that
the prevailing road conditions permit. Other-
wise, sudden and unexpected acceleration
of the vehicle could cause an accident
and/or serious injury to you and others.i
The set value is increased in 5 mph
(Canada: 10 km/h) increments each time you lift
the DISTRONIC Plus lever past the resistance
point.