▷A wheel without TPM electronics is fitted:
have the service center check it if neces‐
sary.▷Malfunction: have the system checked by
your service center.▷TPM was unable to complete the reset.
Reset the system again.▷Disturbance by systems or devices with
the same radio frequency: after leaving the
area of the disturbance, the system auto‐
matically becomes active again.
Declaration according to NHTSA/
FMVSS 138 Tire Pressure Monitoring
System
Each tire, including the spare (if provided)
should be checked monthly when cold and in‐
flated to the inflation pressure recommended
by the vehicle manufacturer on the vehicle
placard or tire inflation pressure label. (If your
vehicle has tires of a different size than the size
indicated on the vehicle placard or tire inflation
pressure label, you should determine the
proper tire inflation pressure for those tires.)
As an added safety feature, your vehicle has
been equipped with a tire pressure monitoring
system (TPMS) that illuminates a low tire pres‐
sure telltale when one or more of your tires is
significantly under-inflated. Accordingly, when
the low tire pressure telltale illuminates, you
should stop and check your tires as soon as
possible, and inflate them to the proper pres‐
sure. Driving on a significantly under-inflated
tire causes the tire to overheat and can lead to
tire failure. Under-inflation also reduces fuel ef‐
ficiency and tire tread life, and may affect the
vehicle's handling and stopping ability. Please
note that the TPMS is not a substitute for
proper tire maintenance, and it is the driver's
responsibility to maintain correct tire pressure,
even if under-inflation has not reached the
level to trigger illumination of the TPMS low
tire pressure telltale. Your vehicle has also
been equipped with a TPMS malfunction indi‐
cator to indicate when the system is not oper‐
ating properly. The TPMS malfunction indica‐
tor is combined with the low tire pressure
telltale. When the system detects a malfunc‐
tion, the telltale will flash for approximately one
minute and then remain continuously illumi‐
nated. This sequence will continue upon sub‐
sequent vehicle start-ups as long as the mal‐
function exists. When the malfunction indicator
is illuminated, the system may not be able to
detect or signal low tire pressure as intended.
TPMS malfunctions may occur for a variety of
reasons, including the installation of replace‐
ment or alternate tires or wheels on the vehicle
that prevent the TPMS from functioning prop‐
erly. Always check the TPMS malfunction tell‐
tale after replacing one or more tires or wheels
on your vehicle to ensure that the replacement
or alternate tires and wheels allow the TPMS
to continue to function properly.
FTM Flat Tire Monitor
The concept The system does not measure the actual infla‐
tion pressure in the tires.
It detects a pressure loss in a tire by comparing
the rotational speeds of the individual wheels
while moving.
In the event of a pressure loss, the diameter
and therefore the rotational speed of the corre‐
sponding wheel change. This is detected and
reported as a flat tire.
Functional requirements
The system must have been initialized when
the tire inflation pressure was correct; other‐
wise, reliable signaling of a flat tire is not en‐
sured. Initialize the system after each correc‐ tion of the tire inflation pressure and afterevery tire or wheel change.Seite 102ControlsSafety102
Online Edition for Part no. 0140 2 920 413 - VI/13
Approved wheels and tires
The manufacturer of your vehicle recom‐
mends that you use only wheels and tires that
have been approved for your particular vehicle
model.
For example, despite having the same official
size ratings, variations can lead to body con‐
tact and with it, the risk of severe accidents.
The manufacturer of your vehicle cannot eval‐
uate non-approved wheels and tires to deter‐
mine if they are suited for use, and therefore
cannot ensure the operating safety of the vehi‐
cle if they are mounted.◀
Recommended tire brands
For each tire size, the manufacturer of your ve‐
hicle recommends certain tire brands. These
can be identified by a star on the tire sidewall.
With proper use, these tires meet the highest
standards for safety and handling.
New tires Due to technical factors associated with their
manufacture, tires do not achieve their full
traction potential until after an initial breaking-
in period.
Drive conservatively for the first
200 miles/300 km.
Retreaded tires
The manufacturer of your vehicle does not rec‐
ommend the use of retreaded tires.
Retreaded tires
Possibly substantial variations in the de‐
sign and age of the tire casing structures can
limit service life and have a negative impact on
road safety.◀
Winter tires
The manufacturer of your vehicle recommends
winter tires for winter roads or at temperatures
below +45 ℉/+7 ℃.
Although so-called all-season M+S tires do
provide better winter traction than summer tires, they do not provide the same level of per‐
formance as winter tires.
Maximum speed of winter tires If the maximum speed of the vehicle is higher
than the permissible speed for the winter tires,
then display a corresponding sign in the field
of vision. You can obtain this sign from the tire
specialist or from your service center.
Maximum speed for winter tires
Do not exceed the maximum speed for
the winter tires; otherwise, tire damage and ac‐
cidents can occur.◀
Run-flat tires If you are already using run-flat tires, for your
own safety you should replace them only with
the same kind. No spare tire is available in the
case of a flat tire. Your service center will be
glad to advise you.
Rotating wheels between axles
The manufacturer of your vehicle advises
against switching wheels between the front
and rear axles.
This can impair the handling characteristics.
StorageStore wheels and tires in a cool, dry place with
as little exposure to light as possible.Seite 193Wheels and tiresMobility193
Online Edition for Part no. 0140 2 920 413 - VI/13
Always protect tires against all contact with oil,
grease and fuels.
Do not exceed the maximum tire inflation pres‐
sure indicated on the side wall of the tire.
Run-flat tires
Label
RSC label on the tire sidewall.
The wheels are composed of special rims and
tires that are self-supporting, to a limited de‐
gree.
The support of the sidewall allows the tire to
remain drivable to a restricted degree in the
event of a pressure loss.
Continued driving with a damaged tire, refer to
page 104.
Continued driving with a damaged tire, refer to
page 101.
Changing run-flat tires
For your own safety, only use run-flat tires. No
spare tire is available in the case of a flat tire.
Your service center will be glad to advise you.
Snow chains
Fine-link snow chains
Only certain types of fine-link snow chains
have been tested by the manufacturer of your
vehicle, classified as road-safe and recom‐
mended.
Consult your service center for more informa‐
tion.
Use Use only in pairs on the rear wheels, equipped
with the tires of the following size:▷205/60 R 16.▷225/55 R 16.▷225/50 R 17.▷225/45 R 18.
Follow the chain manufacturer's instructions.
Make sure that the snow chains are always
sufficiently tight. Retighten as needed accord‐
ing to the chain manufacturer's instructions.
Do not initialize the Flat Tire Monitor after
mounting snow chains, as doing so may result
in incorrect readings.
Do not initialize the Tire Pressure Monitor after
mounting snow chains, as doing so may result
in incorrect readings.
When driving with snow chains, briefly activate
Dynamic Traction Control if necessary.
Maximum speed with snow chains Do not exceed a speed of 30 mph/50 km/h
when using snow chains.
Seite 194MobilityWheels and tires194
Online Edition for Part no. 0140 2 920 413 - VI/13
Replacing the reversing lamp and inner
brake lamp1.Loosen the two fasteners, arrow 1 and pull
down on the lamp holder to remove, ar‐
row 2.2.Press the defective bulb gently into the
socket, turn counterclockwise and remove.3.Insert the new bulb.
Installing the bulb holder
1.Slide the bulb holder onto the two guide
pins, arrow 1. Insert the two contacts, ar‐
row 2, into the connections, arrow 3.2.Press on the bulb holder. Make sure that
the two exterior fasteners latch into place.3.Place the cover back in position and slide it
inwards.
Tail lamp, license plate lamp and
central brake lamp
Follow the general instructions on lamps and
bulbs, refer to page 203.
These lamps are made using LED technology.
Contact your service center in the event of a
malfunction.
Changing wheels
Hints
The vehicle equipment does not include a
spare tire.
When using run-flat tires or tire sealants, a tire
does not need to be changed immediately in
the event of pressure loss due to a flat tire.
The tools for changing wheels are available as
accessories from your service center.
Jacking points for the vehicle jack
The jacking points for the vehicle jack are lo‐
cated at the positions shown.
Vehicle battery Maintenance
The battery is maintenance-free, i.e., the elec‐
trolyte will last for the life of the battery.
Your service center will be glad to advise you
on questions regarding the battery.
Battery replacement Use approved vehicle batteries only
Only use vehicle batteries that have been
approved for your vehicle by the manufacturer;
otherwise, the vehicle could be damaged and
systems or functions may not be fully availa‐
ble.◀
After a battery replacement, have the battery
registered on the vehicle by your service cen‐
Seite 211Replacing componentsMobility211
Online Edition for Part no. 0140 2 920 413 - VI/13
Settings, storing for seat, mir‐ror 54
Shifting, automatic transmis‐ sion 70
Shifting, manual transmis‐ sion 70
Shift paddles on steering wheel 72
Side airbags 95
Side View 136
Signaling, horn 12
Signals when unlocking 42
Sitting safely 48
Size 226
Slide/tilt glass roof 45
Smallest turning circle 227
Snow chains 194
Socket 157
Socket, OBD Onboard Diag‐ nostics 202
SOS button 214
Spare fuse 212
Specified engine oil types 198
Speed, average 86
Speed limit detection, on‐ board computer 86
Speed limiter, display 83
Speed Limit Information 83
Speed limit in the com‐ puter 86
Split screen 21
SPORT+ - program, Dynamic Driving Control 121
Sport automatic transmis‐ sion 72
Sport displays, torque dis‐ play, performance dis‐
play 87
SPORT program, Dynamic Driving Control 121
Sport program, transmis‐ sion 71
Sport steering, variable 119
Stability control systems 117 Start/stop, automatic func‐
tion 64
Start/Stop button 62
Start function during malfunc‐ tion 33
Starting the engine 63
Status display, tires 99
Status information, iDrive 20
Status of Owner's Manual 6
Steering wheel, adjusting 56
Steering wheel heating 57
Steptronic, automatic trans‐ mission 70
Stopping the engine 63
Storage compartment in the rear 164
Storage compartments 162
Storage compartments, loca‐ tions 162
Storage, tires 193
Storing the vehicle 223
Summer tires, tread 191
Supplementary text mes‐ sage 78
Surround View 134
Switch for Dynamic Driv‐ ing 120
Switch-on times, parked-car ventilation 152
Switch, refer to Cockpit 12
Symbols 6
T Tachometer 79
Tailgate 38
Tailgate, automatic 38
Tailgate opening with no- touch activation 41
Tailgate via remote con‐ trol 36
Tail lamps 209
Technical changes, refer to Safety 7
Technical data 226 Telephone, see user's manual
for Navigation, Entertain‐
ment and Communication
Temperature, automatic cli‐ mate control 147, 149
Temperature display, external temperature 80
Temperature, engine oil 79
Tempomat, refer to Active Cruise Control 123
Terminal, starting aid 216
Text message, supplemen‐ tary 78
Theft alarm system, refer to Alarm system 43
Theft protection, refer to Central locking system 35
Thigh support 50
Tilt alarm sensor 44
Time of arrival 86
Tire damage 192
Tire identification marks 190
Tire inflation pressure 185
Tire inflation pressure moni‐ tor, refer to FTM 102
Tire Pressure Monitor TPM 99
Tires, changing 192
Tires, everything on wheels and tires 185
Tires, run-flat tires 194
Tire tread 191
Tone, see user's manual for Navigation, Entertainment
and Communication
Tools 203
Top View 138
Total vehicle weight 227
Touchpad 19
Tow fitting 218
Towing 217
Tow-starting 217
Tow truck 217
TPM Tire Pressure Moni‐ tor 99
Traction control 118 Seite 237Everything from A to ZReference237
Online Edition for Part no. 0140 2 920 413 - VI/13