Page 223 of 481
222 Controls in detailDriving systemsDistronic deactivated
If Distronic is deactivated, the standard
display of Distronic appears in the multi-
function display.
1Vehicle ahead, if detected
2Actual distance to vehicle ahead
3Preset distance threshold to vehicle
ahead
4Symbol for activated distance warning
function
5Your vehicleDistronic activated
When you turn Distronic on, you will see
the set speed in the multifunction display
for about five seconds. You then see the
following display in the multifunction dis-
play.
1Distronic activatedCruise control lever
The Distronic system is operated by means
of the cruise control lever.
The cruise control lever is the uppermost
lever on the left-hand side of the steering
column.
1Sets current or higher speed
2Sets current or lower speed
3Deactivates Distronic
4Resumes at last set speed
Page 225 of 481

224 Controls in detailDriving systemsSetting a higher speed
Briefly tip the cruise control lever in the
direction of arrow1 (
page 222) to
increase vehicle speed in increments
of 5 mph (Canada: 10 km/h).
The new speed is set.
The stored speed is displayed in the
multifunction display for approximately
five seconds (
page 222), and one or
two segments around the stored speed
come on the speedometer
(
page 220).
Setting a lower speed
Briefly tip the cruise control lever in the
direction of arrow2 (
page 222) to
decrease vehicle speed in increments
of 5 mph (Canada: 10 km/h).The new speed is set.
The stored speed is displayed in the
multifunction display for approximately
five seconds (
page 222), and one or
two segments around the stored speed
come on the speedometer
(
page 220).
Fine adjustment in 1 mph
(Canada: 1 km/h) increments
Faster
Briefly tip the cruise control lever in the
direction of arrow4 (
page 222).Setting to last stored speed (“Resume”
function)
Briefly tip the cruise control lever in the
direction of arrow4 (
page 222).
Distronic is set to the last stored
speed.
Remove your foot from the accelerator
pedal.
iDepressing the accelerator pedal does
not deactivate Distronic. After brief ac-
celeration (e.g. for passing), the cruise
control resumes the last speed set.
iWhen you use the cruise control lever
to decelerate, the brakes will be ap-
plied to support deceleration.
In addition, the transmission will auto-
matically downshift on long downhill
grades.
Warning!
G
The speed stored in memory should only be
set again if prevailing road conditions per-
mit. Possible acceleration or deceleration
differences arising from returning to preset
speed could cause an accident and/or seri-
ous injury you and others.
Page 261 of 481

260 Controls in detailUseful features
Call priority
If other service calls such as a Roadside
Assistance call or Information call are ac-
tive, an emergency call is still possible. In
this case, the emergency call will take pri-
ority and override all other active calls.
!If the indicator lamps do not start flash-
ing after pressing one of the buttons or
remain illuminated (in red) at any time,
the Tele Aid system has detected a
fault or the service is not currently ac-
tive, and may not initiate a call. Visit an
Mercedes-Benz Center and have the
system checked or contact the Re-
sponse Center at 1-800-756-9018 (in
the USA) or 1-888-923-8367 (in Cana-
da) as soon as possible.
iThe indicator lamp in the respective
button flashes until the call is con-
cluded. Calls can only be terminated by
a Response Center or Customer
Assistance Center representative
except Roadside Assistance and
Information calls, which can also be
terminated by pressing buttont on
the multifunction steering wheel or the
respective button for ending a
telephone call on the COMAND head
unit.
!If the indicator lamp continues to flash
or the system does not reset, contact
the Response Center at
1-800-756-9018 (in the USA) or
1-888-923-8367 (in Canada), or
Mercedes-Benz Customer Assistance
at 1-800-FOR-MERCedes
(1-800-367-6372) in the USA or
Customer Service at 1-800-387-0100
in Canada.
Page 312 of 481

311 Operation
Tires and wheels
Reactivating the tire inflation pressure
monitor
The tire inflation pressure monitor must be
reactivated in the following situations:
If you have changed the tire inflation
pressure.
If you have replaced the wheels or
tires.
If you have installed new wheels or
tires.
Using the tire placard on the driver’s
door B-pillar or, if available, the inside
of the fuel filler flap, make sure the tire
inflation pressure of all four tires is cor-
rect.
Press buttonè orÿ on the mul-
tifunction steering wheel repeatedly
until the standard display menu
appears in the multifunction display
(page 143).
Press button j or k repeatedly
until you see the current tire inflation
pressures for each tire appear in the
multifunction display or the following
message appears in the multifunction
display:TIRE PRES. DISPLAY
APPEARS AFTER
DRIVING A FEW
MINUTES
Press the reset buttonJon the in-
strument cluster (
page 140).The following message will appear in
the multifunction display:
MONITOR CURRENT
TIRE
PRESSURES?
Press the æ button.
The following message will appear in
the multifunction display:TIRE PRES. MONITOR
REACTIVATED The tire inflation pressure monitor will
now monitor the tire inflation pressure
values of all four tires.
The following message will appear in
the multifunction display:TIRE PRES. DISPLAY
APPEARS AFTER
DRIVING A FEW
MINUTES
iIf you are transporting a deflated tire in
the vehicle, do not activate the tire
inflation pressure monitor until
the deflated tire is no longer in the
vehicle
you have inflated the tire to the
correct tire inflation pressure.
Page 331 of 481

330 OperationMaintenanceClearing the maintenance service indi-cator
The maintenance service indicator is auto-
matically cleared after 30 seconds when
you switch on the ignition or when reach-
ing the maintenance service threshold
while driving. You can also clear it yourself.
1Reset buttonJ
Press the reset buttonJ1.
Maintenance service term exceeded
If you have exceeded the suggested main-
tenance service term, you will see the fol-
lowing message in the multifunction
display:'A' SERVICE
EXCEEDED BY
XXXX MI(Canada:
XXXX KM
)
'A' SERVICE
EXCEEDED BY
XXX DAYS
'A' SERVICE
EXCEEDED BY
X DAYIn addition, a signal sounds when the mes-
sage appears.
Any authorized Mercedes-Benz Center will
reset the maintenance service indicator
following a completed maintenance ser-
vice.Calling up the maintenance service in-
dicator
Switch on the ignition (
page 34).
The standard display of the control sys-
tem appears (
page 148).
Press button k or j on the mul-
tifunction steering wheel until the
maintenance service indicator with the
service symbol 9 or ´ and the
service deadline appears in the multi-
function display.iIf the battery is disconnected, the days
of disconnection will not be included in
the count shown by the maintenance
service indicator. To arrive at the true
maintenance service deadline, you will
need to subtract these days from the
days shown in the maintenance service
indicator.
Do not confuse the maintenance ser-
vice indicator with the engine oil level
indicator :.
Page 332 of 481
331 Operation
Maintenance
Resetting the maintenance service indi-cator
In the event that the maintenance service
on your vehicle is not carried out by an au-
thorized Mercedes-Benz Center, you can
have the maintenance service indicator re-
set. The automotive maintenance facility
carrying out the maintenance service will
find the information for resetting the main-
tenance service indicator in the mainte-
nance-relevant information for your
vehicle. Such information is available from
either your authorized Mercedes-Benz
Center or directly from Mercedes-Benz
USA, LLC.
iIf the maintenance service indicator
was inadvertently reset, have an autho-
rized Mercedes-Benz Center correct it.
Only reset if the proper maintenance
service has been performed. Resetting
the system without performing the
proper service as called for by the
maintenance service indicator will re-
sult in engine damage and/or other ve-
hicle damage not covered by the
Mercedes-Benz Limited Warranty.
Page 350 of 481

349 Practical hints
What to do if …?
Vehicle status messages in the multi-function display
Warning and malfunction messages ap-
pear in the multifunction display located in
the instrument cluster.
Certain warning and malfunction messag-
es are accompanied by an audible signal.
Address these messages accordingly and
follow the additional instructions given in
this Operator’s Manual.
Selecting the vehicle status message
memory menu in the control system
(page 159) displays both cleared and
uncleared messages.
High-priority messages appear in the mul-
tifunction display in red color.Certain messages of high priority cannot
be cleared from the multifunction display
using the reset buttonJ(
page 140) or
button j, k, ÿ, or è on the
multifunction steering wheel
(
page 144).
Other messages of high priority and mes-
sages of less immediate priority can be
cleared from the multifunction display us-
ing the reset buttonJor button j,
k, ÿ, or è on the multifunction
steering wheel. They are then stored in the
vehicle status message memory
(page 159). Remember that clearing a
message will only make the message dis-
appear. Clearing a message will not cor-
rect the condition that caused the
message to appear.
Warning!
G
All categories of messages contain impor-
tant information which should be taken note
of and, where a malfunction is indicated, ad-
dressed as soon as possible at an autho-
rized Mercedes-Benz Center.
Failure to repair condition noted may cause
damage not covered by the Mercedes-Benz
Limited Warranty, or result in property dam-
age or personal injury.Warning!
G
No messages will be displayed if either the
instrument cluster or the multifunction dis-
play is inoperative. Contact your nearest au-
thorized Mercedes-Benz Center.
Page 369 of 481

368 Practical hintsWhat to do if …?Display
Possible cause
Possible solution
_
ENTRY POSITION
DO NOT DRIVE
Seat, exterior mirrors and steering wheel
have not yet moved to their preset driving
positions.
Wait until the seat, exterior mirrors and
steering wheel have moved to their driv-
ing positions.
The message will disappear.
Y
HOOD OPEN
You are driving with the hood open.
Close the hood (
page 288).
I
REMOVE KEY
You have forgotten to remove the
SmartKey.
Remove the SmartKey from the starter
switch.
REPLACE KEY
DRIVE TO WORKSHOP
The SmartKey is malfunctioning.
Visit an authorized Mercedes-Benz Cen-
ter as soon as possible.
AUTOMATIC LIGHT ON
REMOVE KEY
SmartKey in starter switch position 1
or2.
Remove the SmartKey from the starter
switch.
KEY
CHECK BATTERY
The battery in the KEYLESS-GO* key is
discharged.
Replace the battery (
page 392).
KEY
NOT RECOGNIZED
SmartKey with KEYLESS-GO* is not rec-
ognized while the engine is running be-
cause
the SmartKey is not in the vehicle
there is strong radio-frequency inter-
ference
Stop the vehicle as soon as it is safe to do
so.
Search for the SmartKey.
Otherwise the vehicle cannot be centrally
locked nor can the engine be started again
after it has been stopped.