
Message when the system was not
reset
A Check Control message is displayed.
The system detected a wheel change but was
not reset.
Warnings regarding the current tire inflation
pressure are not reliable.
Check the tire inflation pressure and reset the
system.
Malfunction The yellow warning lamp flashes and
then lights up continuously. A Check
Control message is displayed. No flat
tire can be detected.
Display in the following situations:▷A wheel without TPM electronics is fitted:
have the service center check it if necessary.▷Malfunction: have the system checked by
your service center.▷TPM could not be fully reset. Reset the sys‐
tem again.▷Disturbance by systems or devices with the
same radio frequency: after leaving the area
of the disturbance, the system automatically
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 la‐
bel, you should determine the proper tire infla‐
tion pressure for those tires.) As an added safety
feature, your vehicle has been equipped with a
tire pressure monitoring system (TPMS) that il‐
luminates a low tire pressure telltale when one
or more of your tires is significantly under-in‐
flated. 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 pressure. Driving on a significantly
under-inflated tire causes the tire to overheat
and can lead to tire failure. Under-inflation also
reduces fuel efficiency and tire tread life, and
may affect the vehicle's handling and stopping
ability. Please note that the TPMS is not a sub‐
stitute 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 indicator to
indicate when the system is not operating prop‐
erly. The TPMS malfunction indicator is com‐
bined with the low tire pressure telltale. When
the system detects a malfunction, the telltale will
flash for approximately one minute and then re‐
main continuously illuminated. This sequence
will continue upon subsequent vehicle start-ups
as long as the malfunction exists. When the mal‐
function 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
replacement or alternate tires or wheels on the
vehicle that prevent the TPMS from functioning
properly. Always check the TPMS malfunction
telltale after replacing one or more tires or
wheels on your vehicle to ensure that the re‐
placement 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.Seite 97SafetyControls97
Online Edition for Part no. 01 40 2 902 827 - 07 12 490 

New tires
Due to technical factors associated with their
manufacture, tires do not achieve their full trac‐
tion potential until after an initial breaking-in pe‐
riod.
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 pro‐
vide better winter traction than summer tires,
they do not provide the same level of perform‐
ance 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 spe‐
cialist or from your service center.
Maximum speed for winter tires
Do not exceed the maximum speed for the
winter tires; otherwise, tire damage and acci‐
dents 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 thecase of a flat tire. Your service center will be glad
to advise you.
Rotating wheels between axles
The manufacturer of your vehicle advises
against swapping wheels between the front and
rear axles.
This can impair the handling characteristics.
Storage
Store wheels and tires in a cool, dry place with
as little exposure to light as possible.
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 re‐
main drivable to a restricted degree in the event
of a pressure loss.
Continued driving with a damaged tire, refer to
page  99.
Continued driving with a damaged tire, refer to
page  96.
Seite 181Wheels and tiresMobility181
Online Edition for Part no. 01 40 2 902 827 - 07 12 490 

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 recommended.
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:▷225/55 R 17.▷245/45 R 18.▷245/40 R 19
Follow the chain manufacturer's instructions.
Make sure that the snow chains are always suf‐
ficiently tight. Retighten as needed according 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.
Snow chain detection
The concept
When using snow chains, you should set
whether you are driving with or without snow
chains via the iDrive.
The snow chain detection system supports you
by automatically showing the detected state on
the Control Display.
When snow chains are in use, the rear axle steer‐
ing of the Integral Active Steering is deactivated
automatically.
At speeds above the maximum permitted speed
with snow chains of 30 mph/50 km/h, the rear
axle steering is activated again automatically.
Activating the status1."Settings"2."Tire chains"3."Tire chains installed"
Automatic detection
If functioning properly:
▷Snow chains are mounted. The setting is not
activated  
  .
After you drive a short distance, a Check
Control message is shown and the state is
activated automatically.
Confirm the automatic activation.
▷Snow chains are not mounted. The setting
is activated  
  .
At speeds above 30 mph/50 km/h, a Check
Control message is displayed. Deactivate
the status manually.
If not functioning properly:
▷Snow chains are mounted. The setting is not
activated  
  .
A Check Control message is not displayed.
The automatic detection system is malfunc‐
tioning. Activate the status manually.
Seite 182MobilityWheels and tires182
Online Edition for Part no. 01 40 2 902 827 - 07 12 490 

Lamps in the trunk lid
Access to the lamps
If necessary, remove the fasteners using the
screwdriver from the onboard vehicle tool kit
and fold away the cover.
Inside brake lamp
Follow the general instructions on lamps and
bulbs, refer to page  192.
24-watt bulb, HP24W
1.Squeeze the bulb holder and pull it out.2.Pull off the connector.3.Replace the bulb.4.Mount the bulb holder and the cover of the
trunk lid in reverse order.
Reversing lamp
Follow the general instructions on lamps and
bulbs, refer to page  192.
16-watt bulb, W16W1.Unscrew the bulb holder counterclockwise.2.Pull out the bulb and replace it.3.Mount the bulb holder and the cover of the
trunk lid in reverse order.
Changing wheels
Notes
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 in the positions shown.
Seite 195Replacing componentsMobility195
Online Edition for Part no. 01 40 2 902 827 - 07 12 490 

Protective function, glass sun‐roof  44 
Protective function, win‐ dows  42 
Push-and-turn switch, refer to Controller  16 
R
Radiator fluid  188 
Radio-operated key, refer to Remote control  30 
Radio ready state  58 
Radio, see user's manual for Navigation, Entertainment
and Communication 
Rain sensor  66 
Rear axle steering  113 
Rear center armrest  152 
Rear lamps  194 
Rearview mirror  51 
Rear window defroster  142 
Recirculated-air mode  142 
Recommended tire brands  180 
Refueling  170 
Remaining range  78 
Remote control/key  30 
Remote control, malfunc‐ tion  35 
Remote control, universal  145 
Replacement fuse  197 
Replacing parts  192 
Replacing wheels/tires  180 
Reporting safety defects  8 
RES button  120 
Reserve warning, refer to Range  78 
Reset, Tire Pressure Monitor TPM  95 
Residual heat, automatic cli‐ mate control  142 
Retaining straps, securing cargo  162 
Retreaded tires  181 Reversing lamp, bulb replace‐
ment  195 
Roadside parking lamps  87 
Roller sunblinds  42 
Roll stabilization, refer to Adaptive Drive  113 
Roll stabilization, refer to Dy‐ namic Drive  113 
RON gasoline quality  172 
Rope for tow-starting/tow‐ ing  201  
RSC Run Flat System Compo‐ nent, refer to Run-flat
tires  181 
Rubber components, care  205 
Run-flat tires  181 
S
Safe braking  159 
Safety  7 
Safety belt reminder for driv‐ er's seat and front passenger
seat  49 
Safety belts  49 
Safety belts, care  205 
Safety switch, windows  42 
Safety systems, airbags  91 
Saving fuel   0 
Screen, refer to Control Dis‐ play  16 
Screwdriver  192 
Screw thread for tow fit‐ ting  202 
Seat belts, refer to Safety belts  49 
Seat heating, front  47 
Seat heating, rear  48 
Seating position for chil‐ dren  54 
Seat, mirror, and steering wheel memory  51 
Seats  45 
Seat ventilation, front  48 Selection list in instrument
cluster  81 
Selector lever, automatic transmission  68 
Sensors, care  206 
Service and warranty  7 
Service requirements, Condi‐ tion Based Service CBS  189 
Service requirements, dis‐ play  78 
Service, Roadside Assis‐ tance  199 
Settings on Control Dis‐ play  83 
Settings, storing for seat, mir‐ rors, steering wheel  51 
Shifting, automatic transmis‐ sion  67 
Shift paddles on steering wheel  69 
Short commands  213 
Shoulder support  47 
Side airbags  91 
Side View  133 
Signaling, horn  12 
Signals when unlocking  35 
Sitting safely  45 
Size  210 
Ski bag  149 
Smallest turning circle  211 
Smoker's package  147 
Snow chains  182 
Socket  148 
Socket, OBD Onboard Diag‐ nostics  190 
SOS button  198 
Spare fuse  197 
Speaker lighting  90 
Specified engine oil types  187 
Speed, average  82 
Speed limit detection, on‐ board computer  82 
Speed limiter, display  79 
Speed Limit Information  79 Seite 228ReferenceEverything from A to Z228
Online Edition for Part no. 01 40 2 902 827 - 07 12 490