Page 211 of 480

210 Controls in detailDriving systems1Red DTR warning lamp E
Warning!
G
An intermittent warning sounds and the
DTR warning lamp (red) E in the speed-
ometer dial is illuminated if the Distronic
system calculates that the distance to the
vehicle ahead and your vehicle’s current
speed indicate that Distronic will not be ca-
pable of slowing the vehicle sufficiently to
maintain the preset following distance,
which creates a danger of a collision.
Immediately brake the vehicle to increase
the distance to the vehicle in front of you.
The warning sound is intended as a final cau-
tion that you have not interceded with your
own braking inputs to avoid a potentially
dangerous situation. Do not wait for the op-
eration of the warning signal to intercede
with your own braking, as that will result in
potentially dangerous emergency braking
which will not always result in an impact be-
ing avoided.
Tailgating increases the risk of an accident.
Warning!
G
The Distronic brakes your vehicle with a
maximum of 6.5 ft/s
2 (2 m/s
2). This corre-
sponds to about 20% of the maximum decel-
eration ability of your vehicle.
Distronic brakes the vehicle in an effort to
restore the preset distance or to maintain
the speed.
Page 212 of 480
211 Controls in detail
Driving systems
Distronic menu in the control system
In the Distronic menu you can read the cur-
rent settings for Distronic. What appears in
the left multifunction display depends on
whether the Distronic is turned on or off.
Press button è or ÿ repeatedly
until you see one of the following dis-
plays.Distronic deactivated
When Distronic is deactivated, you will see
the standard display in the left multifunc-
tion display.
1Vehicle ahead, if detected
2Actual distance to vehicle ahead
3Preset distance threshold to vehicle
ahead
4Your vehicle
5Symbol for activated distance warning
functionDistronic activated
When Distronic is activated, the DTR sym-
bol and the set speed appear in the left
multifunction display.
1Symbol for activated Distronic
2Set speed
Page 246 of 480

245 Controls in detail
Useful features
Remote door unlock
In case you have locked your vehicle unin-
tentionally (e.g. SmartKey inside vehicle),
and the reserve SmartKey is not handy:
Contact the Mercedes-Benz Response
Center at 1-800-756-9018 (in the USA)
or 1-888-923-8367 (in Canada).
You will be asked to provide your pass-
word which you provided when you
completed the subscriber agreement.
Then return to your vehicle and pull the
trunk recessed handle for a minimum
of 20 seconds until the SOS button is
flashing.
The message
Call connected
appears
in the multifunction display.
As an alternative, you may unlock the vehi-
cle via Internet using the ID and password
sent to you shortly after the completion of
your acquaintance call.
!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.
iWhen a Tele Aid call has been initiated,
the COMAND system audio is muted
and the selected mode (radio or CD)
pauses. The optional cellular phone (if
installed) switches off. If you must use
this phone, the vehicle must be parked.
Disconnect the coiled cord and place
the call. The COMAND navigation sys-
tem (if engaged) will continue to run.
The display in the instrument cluster is
available for use and spoken com-
mands are only available by pressing
the RPT button on the COMAND unit. A
pop-up window will appear in the
COMAND display to indicate that a Tele
Aid call is in progress.
Page 299 of 480

298 OperationTires and wheelsReactivating the TPMS
The TPMS must be reactivated when you
have adjusted the tire inflation pressure to
a new level (e.g. because of different load
or driving conditions). The TPMS is then
recalibrated to the current tire inflation
pressures.
Using the tire placard on the driver’s
door B-pillar (
page 285) or, if avail-
able, the supplemental tire pressure
information on the inside of the fuel fill-
er flap (
page 269), 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 ap-
pears in the multifunction display
(page 140).
Press thej or kbutton repeat-
edly until you see the flowing message:Tire pressure
monitor active
Reactivation possible:
R-button
Press the reset button.
The following message will appear in
the multifunction display:Check current
tire pressure?
Warning!
G
It is the driver’s responsibility to calibrate
the TPMS on the recommended cold infla-
tion pressure. Underinflated tires affect the
ability to steer or brake the vehicle. You
might loose control over the vehicle.
iReactivate the TPMS after adjusting
the tire inflation pressure to the infla-
tion pressure recommended for the
vehicle operating condition. Tire pres-
sure should only be adjusted on cold
tires. Observe the recommended tire
inflation pressure on the placard on the
driver’s door B-pillar (
page 285).
Some vehicles may have supplemental
tire pressure information for driving at
high speeds (
page 292) or for vehicle
loads less than the maximum loaded
vehicle condition (
page 292). If such
information is provided, it can be found
on the inside of the fuel filler flap.
Page 320 of 480

319 Operation
Maintenance
1Reset button
Press reset button1 on the instru-
ment cluster.
The maintenance service indicator
message is cleared and the standard
display appears in the multifunction
display (
page 140).Maintenance service term exceeded
If you have exceeded the suggested main-
tenance service term, you will see the fol-
lowing message in the right multifunction
display:
Service A exceeded by XXXX miles (km)
Service A exceeded by XXX daysIn 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
indicator display
Switch on the ignition (
page 36).
The standard display of the control sys-
tem appears (
page 135).
Press button è or ÿ on the mul-
tifunction steering wheel repeatedly
until the standard display appears in
the multifunction display (
page 140).
Press button k or j on the
multifunction steering wheel until the
maintenance service indicator mes-
sage with the maintenance service
symbol 9 or
½
appears in the
left multifunction display and the main-
tenance service deadline appears in
the right multifunction display.
Page 321 of 480

320 OperationMaintenance
Resetting the maintenance service indicator
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 ei-
ther from an authorized Mercedes-Benz
Center or directly from Mercedes-Benz.
iIf the battery supplying the vehicle’s
electrical consumers is disconnected,
the days of disconnection will not be in-
cluded in the count shown by the main-
tenance service indicator. To arrive at
the true maintenance service deadline,
you will need to subtract these days
from the days shown in the mainte-
nance service indicator display.
Do not confuse the service indicator
with the engine oil level indicator N.
!If the maintenance service indicator
was inadvertently reset, have an autho-
rized Mercedes-Benz Center correct it.
Only reset if the proper service has
been performed. Resetting the system
without performing proper service as
called for by the maintenance service
indicator will result in engine damage
not covered by the Mercedes-Benz
Limited Warranty.
Page 346 of 480

345 Practical hints
What to do if …
Vehicle status messages in the multi-function display
Warning and malfunction messages ap-
pear in the in the multifunction display lo-
cated 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 144) 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 button (
page 24) or but-
ton j, k, ÿ, or è on the
multifunction steering wheel.
Other messages of high priority and mes-
sages of less immediate priority can be
cleared from the multifunction display us-
ing the reset button or button j, k,
ÿ, or è on the multifunction steer-
ing wheel. They are then stored in the vehi-
cle status message memory (
page 144).
Remember that clearing a message will not
correct the condition that caused the mes-
sage 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 370 of 480

369 Practical hints
What to do if …
Left display
Right display
Possible cause/consequence
Possible solution
J
Door open
You are attempting to drive with
one or more doors open.
Close the doors.
_
Entry position
Do not drive
The steering wheel has not yet
moved into its preset driving posi-
tion.
Wait until the steering wheel has moved to its
driving positions.
The message disappears.
N
USA only:Add 1 qt. engine oil
at next refuelingCanada only:Add 1 liter
engine oil
at next refueling
The engine oil level is too low.
Add engine oil (
page 276) and check the
engine oil level (page 274).
Engine oil level
Stop, put engine off
There is no oil in the engine. There
is a danger of engine damage.
Carefully bring the vehicle to a halt as soon as
possible.
Turn off the engine.
Add engine oil (
page 276) and check the
engine oil level (page 274).
Engine oil level
Reduce
oil level
You have added too much engine
oil. There is a risk of damaging the
engine or the catalytic converter.
Have excess oil siphoned or drained off. Ob-
serve all legal requirements with respect to its
disposal.