517 Operation
Tires and wheels
If you wish to confirm activation:
Press$ or% to select “Yes”.
Press#.
The message
Run Flat Indicator
reactivated
appears in the multifunction display.
After a certain “learning phase”, the Run
Flat Indicator checks the set pressure val-
ues for all four tires.
If you wish to cancel activation:
PressL.
or
When the message
Tire pressure
now OK?
appears in the multifunction display:
Press$ or% to select “No”.
Press#.Potential problems associated with
underinflated and overinflated tires
Underinflated tires
Underinflated tires can:
cause excessive and uneven tire wear
adversely affect fuel economy
lead to tire failure from being
overheated
adversely affect handling
characteristicsOverinflated tires
Overinflated tires can:
adversely affect handling
characteristics
cause uneven tire wear
be more prone to damage from road
hazards
adversely affect ride comfort
increase stopping distance
Warning!
G
Follow recommended tire inflation
pressures.
Do not underinflate tires. Underinflated tires
wear excessively and / or unevenly,
adversely affect handling and fuel economy,
and are more likely to fail from being
overheated.
Warning!
G
Follow recommended tire inflation
pressures.
Do not overinflate tires. Overinflated tires
can adversely affect handling and ride
comfort, wear unevenly, increase stopping
distance, and result in sudden deflation
(blowout) because they are more likely to
become punctured or damaged by road
debris, potholes etc.
567 Practical hints
What to do if …?
Display
Possible cause/consequence
Possible solution
Park Assist
inoperative
Park Assist* is unavailable due to a mal-
function.
Visit an authorized Mercedes-Benz Center as soon as possible.
PRE-SAFE
inoperative
See Owner's Manual
PRE-SAFE
® itself has failed. All other occu-
pant safety systems, such as the air bags,
are still available.
Visit an authorized Mercedes-Benz Center as soon as possible.
Check tires
then restart
Run Flat Indicator
There was a warning message about a loss
in tire inflation pressure and the Run Flat In-
dicator* has not been restarted yet.
Check and adjust tire inflation pressure as required
(page 514).
Then restart the Run Flat Indicator* (
page 515).
Radar sensor
deactivated
See Oper. Manual
You attempt to activate DISTRONIC Plus*
or Park Assist* even though you have
switched off the radar sensors* on the vehi-
cle.
Check if the radar sensors* may be switched on (
page 256).
Switch on the radar sensors* using the instrument cluster
control system.
Run Flat Indicator
inoperative
The Run Flat Indicator* is malfunctioning.
Visit an authorized Mercedes-Benz Center as soon as possible.
Service X
due
Service X must be carried out (
page 532).
Have the maintenance service carried out by an authorized
Mercedes-Benz Center.
Service X exceeded
by X days
by XXX mls (km)
Service X must be carried within the next ...
or before you have driven ... miles (kilome-
ters) (
page 532).
Have the maintenance service carried out by an authorized
Mercedes-Benz Center as soon as possible.
Shift to P or N
to start engine
You have attempted to start the engine
while the automatic transmission was set to
position R or D.
Shift the automatic transmission to P or N (
page 367).
568 Practical hintsWhat to do if …?Display
Possible cause/consequence
Possible solution
Tire pressure
Check tires
The pressure has fallen significantly in one
or more tires.
Carefully bring the vehicle to a halt, avoiding abrupt steering
and braking maneuvers. Observe the traffic situation around
you.
Check and adjust tire inflation pressure as required
(page 511).
If necessary, change the wheel (
page 629).
Restart the Run Flat Indicator* after adjusting the tire infla-
tion pressure values (
page 516).
Tire pressure monitor
inoperative
The Advanced TPMS* or a wheel sensor is
malfunctioning.
Have the Advanced TPMS* checked by an authorized
Mercedes-Benz Center.
Tire pressure monitor
inoperative
No wheel sensors
The Advanced TPMS* is deactivated be-
cause wheels without proper sensors were
installed.
Have the wheel sensors installed by an authorized
Mercedes-Benz Center.
As soon as all wheels with sensors have been mounted, the
Advanced TPMS* is switched back on after driving for sever-
al minutes.
Warning!
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 will cause excessive
heat build-up and possibly a fire.
630 Practical hintsFlat tirePreparing the vehicle
Prepare the vehicle as described
(page 629).
Take vehicle tool kit tray and vehicle
jack out of trunk (
page 611).
Take the Minispare wheel from the
wheel well under the trunk floor
(page 613).
Lifting the vehicle
Prevent the vehicle from rolling away
by blocking wheels with wheel chocks
or other sizeable objects.
One wheel chock is included with the
vehicle tool kit (
page 613).
When changing wheel on a level surface:
Place the wheel chock in front of and
another sizeable suitable object behind
the wheel that is diagonally opposite to
the wheel being changed.Always try lifting the vehicle using the jack
on a level surface. However, should cir-
cumstances require you to do so on a hill,
place the wheel chock and another size-
able suitable object as follows:
Place the wheel chock and another
sizeable suitable object on the downhill
side blocking both wheels of the axle
not being worked on.
Take two-piece wheel wrench 1 out of
the vehicle tool kit tray.
The jack take-up brackets are located di-
rectly behind the front wheel housings and
in front of the rear wheel housings.
Warning!
G
The jack is designed exclusively for jacking
up the vehicle at the jack take-up brackets
built into both sides of the vehicle. To help
avoid personal injury, use the jack only to lift
the vehicle during a wheel change. Never
get beneath the vehicle while it is supported
by the jack. Keep hands and feet away from
the area under the lifted vehicle. Always
firmly set parking brake and block wheels
before raising vehicle with jack.
Do not disengage parking brake while the
vehicle is raised. Be certain that the jack is
always vertical (plumb line) when in use, es-
pecially on hills. Always try to use the jack
on level surface. Make sure the jack arm is
fully seated in the jack take-up bracket.
Always lower the vehicle onto sufficient ca-
pacity jackstands before working under the
vehicle.
632 Practical hintsFlat tire
Replace this wheel bolt with alignment
bolt1 supplied in the tool kit.
Remove the remaining bolts.
Remove the wheel.
Mounting the Minispare wheel
1Wheel bolt for light alloy rims
2Wheel bolt for Minispare wheel
(located in trunk with spare wheel)
Clean contact surfaces of wheel and
wheel hub.
Guide the Minispare wheel onto the
alignment bolt and push it on.
Insert wheel bolts2 and tighten them
slightly.
!
Do not place wheel bolts in sand or dirt. This
could result in damage to the bolt and wheel hub
threads.
!
Wheel bolts2 must be used when mount-
ing the Minispare wheel. The use of any wheel
bolts other than wheel bolts2 for the Minispare
wheel will physically damage the vehicle’s
brakes.
Warning!
G
Make sure to use the original length wheel
bolts when remounting the original wheel
after it has been repaired.!
To avoid paint damage, place wheel flat
against hub and hold it there while installing first
wheel bolt.
Warning!
G
Always replace wheel bolts that are dam-
aged or rusted.
Never apply oil or grease to wheel bolts.
Damaged wheel hub threads should be re-
paired immediately. Do not continue to drive
under these circumstances! Contact an au-
thorized Mercedes-Benz Center or call
Roadside Assistance.
Incorrect wheel bolts or improperly tight-
ened wheel bolts can cause the wheel to
come off. This could cause an accident.
Make sure you are using the correct wheel
bolts.
633 Practical hints
Flat tire
Unscrew the alignment bolt, install the
last wheel bolt and tighten slightly.Lowering the vehicle
Lower vehicle by turning crank coun-
terclockwise until vehicle is resting ful-
ly on its own weight.
Remove the jack.
1 - 5 Wheel bolts
Tighten the five wheel bolts evenly, fol-
lowing the diagonal sequence illustrat-
ed (1 to 5), until all bolts are tight.
Observe a tightening torque of
110 lb-ft (150 Nm).Before storing the jack, it should be fully
collapsed, with handle folded in (storage
position).
Store the jack and the other vehicle
tools in the designated storage space
underneath the trunk floor
(page 611).
Warning!
G
Only use Genuine equipment
Mercedes-Benz wheel bolts. Other wheel
bolts may come loose.
Do not tighten the wheel bolts when the ve-
hicle is raised. Otherwise the vehicle could
fall off the jack.
Warning!
G
Have the tightening torque checked after
changing a wheel. The wheels could come
loose if they are not tightened to a torque of
110 lb-ft (150 Nm).i
Do not activate the tire inflation pressure
monitor (
page 511) until the depressurized
tire has been removed from the trunk.
677 Technical terms
Restraint systems
Seat belts, belt tensioners, air bags
and child restraint systems. As inde-
pendent systems, their protective func-
tions complement one another.
Rim
(
page 527)
Root directory
The uppermost directory on a storage
medium.
Run Flat Indicator
The Run Flat Indicator monitors the set
tire inflation pressures by evaluating
each wheel’s rotational speed. If a
wheel’s rotational speed changes due
to falling tire inflation pressure, a corre-
sponding warning message appears in
the ->Instrument cluster control sys-
tem.RON
(R
esearch O
ctane N
umber)
The Research Octane Number for gaso-
line as determined by a standardized
method. It is an indication of a gaso-
line’s ability to resist undesired detona-
tion (knocking). The average of both
the ->MON (Motor Octane Number)
and RON (Research Octane Number) is
posted at the pump, also known as AN-
TI-KNOCK INDEX.
Sidewall
(
page 527)
SIM
(Subscriber I
dentity M
odule)
Card provided by the ->GSM telephone
service provider. Necessary for access-
ing a mobile communication network.
SMS
(S
hort M
essage S
ervice)
With this function you can receive, read
and delete short text messages (if SMS
service is provided by your carrier).SRS
(S
upplemental R
estraint S
ystem)
Seat belts, emergency tensioning de-
vice and air bags. Though independent
systems, they are closely interfaced to
provide effective occupant protection.
Tele Aid
(T
elematic A
larm I
dentification on
D
emand)
The Tele Aid system consists of three
types of response: automatic and man-
ual emergency, Roadside Assistance
and information. Tele Aid is initially ac-
tivated by completing a subscriber
agreement and placing an acquain-
tance call. The Tele Aid system is oper-
ational provided that the vehicle’s
battery is charged, properly connected,
not damaged and mobile phone and
->GPS coverage is available.
Telematics
A combination of the terms “telecom-
munications” and “informatics.”
685 Index
Dynamic Rear View Monitor* 413
Parallel parking 417
Reverse parking (back-in
parking) 415
Switching on 415
View through the camera 413
E
Easy-entry/exit feature 328
COMAND menu 224
EBP 71
ELCODE 672
Electric parking brake 364
Electrical fuses see Fuses
Electrical outlet see Power outlet
Electrical system, Technical Data 659
Electronic Brake Proportioning see EBP
Electronic Stability Program see ESP
®
Emergency call system 462
Emergency calls, Tele Aid 463
Emergency engine shut-down 648
Emergency operation (Limp-Home
Mode) 377
Emergency operations
Locking the vehicle 614
mechanically releasing the parking
brake 616Releasing from inside 440
Remote door lock 469
Remote door unlock 468
Tilt/sliding sunroof or tilt/sliding
panel* 617
Unlocking the trunk 615
Unlocking the vehicle 614
Emergency tensioning device see ETD
Emergency, In case of
Battery, Jump starting 639
First aid kit 611
Flat tire 629
Fuses 645
Instrument cluster, Indicator
lamps 544
Roadside Assistance 16
Roadside Assistance (Tele Aid) 465
Towing the vehicle 642
Emission control 488
Emission control information label 652
Emission control system warranties 14
Engine
Belt layout 653
Cleaning 536
Compartment 492
Coolant 497, 662, 665Malfunction indicator lamp 547
Number 652, 672
Oil 496, 661, 663
Oils 494
Residual heat and ventilation 433
Starting 359
Technical data 654
Turning off 365
Engine coolant see Coolant
Engine oil 494
Adding 496
Additives 663
Checking level 494
Checking level (Dipstick) 495
Checking level (Instrument cluster con-
trol system) 494
Consumption 494
Dipstick 495
Filler neck 496, 497
Messages in display 495, 602
Recommended engine oils and oil
filters 661
Viscosity 672
ESP
®
72
Messages in display 572, 582
Warning lamp 549