Detected child seatsThe system generally detects children seated
in a child seat, especially in the child seats that
were required by NHTSA when the vehicle was
manufactured. After installing a child seat,
make sure that the indicator lamp for the front
passenger airbags lights up. This indicates that the child seat has been detected and the
front passenger airbags are not activated.
Strength of the driver's and front
passenger airbag
The strength with which the driver's and front
passenger airbags are triggered depends on
the position of the driver's and front passenger
seats.
To maintain the accuracy of this function over
the long-term, calibrate the front seats when a
corresponding message appears on the Con‐
trol Display.
Calibrating the front seats A corresponding message appears on the
Control Display.1.Move the respective seat forward all the
way.2.Move the respective seat forward again. It
moves forward briefly.3.Readjust the seat to the desired position.
The calibration procedure is completed when
the message on the Control Display disap‐
pears.
If the message continues to be displayed, re‐
peat the calibration.
If the message does not disappear after a re‐
peat calibration, have the system checked as
soon as possible.
Unobstructed area of movement
Ensure that the area of movement of the
seats is unobstructed to avoid personal injury
or damage to objects.◀
Tire Pressure Monitor TPM
The concept The system monitors tire pressure in the four
mounted tires. The system warns you if there
is a significant loss of pressure in one or more
tires. For this purpose, sensors in the tire
valves measure the tire pressure and tire tem‐
perature.
Hints Tire damage due to external factors
Sudden tire damage caused by external
influences cannot be indicated in advance.◀
Pay attention to the other information and indi‐
cations under Tire inflation pressure, refer to
page 161, as well when using the system.
Functional requirements
The system must have been reset with the
correct tire inflation pressure; otherwise, relia‐
ble signaling of tire pressure loss is not en‐
sured.
Reset the system again after each correction
of the tire inflation pressure and after every tire
or wheel change.
Always use wheels with TPM electronics to
ensure that the system will operate properly.
Status display
The current status of the Tire Pressure Moni‐
tor TPM can be displayed on the Control Dis‐
play, e.g., whether or not the TPM is active.1."Vehicle Info"2."Vehicle status"3. "Tire Pressure Monitor"
The status is displayed.
Status display The tire and system status is indicated by the
color of the wheels and a text message on the
Control Display.
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All wheels green
System is active and will issue a warning rela‐
tive to the tire inflation pressures stored during
the last reset.
One wheel is yellow
A flat tire or major drop in inflation pressure in
the indicated tire.
All wheels are yellow A flat tire or major drop in inflation pressure in
several tires.
Wheels, gray
The system cannot detect a flat tire. Reasons
for this may be:▷The system is being reset.▷Malfunction.
Additional information
The status display additionally shows the cur‐
rent tire inflation pressures and tire tempera‐
tures. The values shown are current measure‐
ment values and may vary depending on
driving style or weather conditions.
Carry out reset Reset the system after each correction of the
tire inflation pressure and after every tire or
wheel change.
1."Vehicle Info"2."Vehicle status"3. "Perform reset"4.Start the engine - do not drive away.5.Carry out the reset with "Perform reset".6.Drive away.
The tires are shown in gray and the status is
displayed.
After driving faster than 19 mph/30 km/h for a
short period, the tire inflation pressures set are
accepted as reference values. The reset is
completed automatically during driving.
After a successfully completed Reset, the
wheels on the Control Display are shown in
green and "Tire Pressure Monitor (TPM)
active" is displayed.
The trip can be interrupted at any time. If you
drive away again, the reset resumes automati‐
cally.
Low tire pressure message The yellow warning lamp lights up. A
Check Control message is displayed.▷There is a flat tire or a major loss in
tire inflation pressure.▷No reset was performed for the system.
The system therefore issues a warning
based on the tire pressures before the last
reset.1.Reduce your speed and stop cautiously.
Avoid sudden braking and steering maneu‐
vers.2.Identify the damaged wheel. Do so by
checking the tire inflation pressure using
the Mobility System. Correcting the tire in‐
flation pressure, refer to page 169.3.Repair flat tire with the Mobility System, re‐
fer to page 166, or replace the damaged
wheel.
Required inflation pressure check
message
A Check Control message is displayed.
Check the tire inflation pressure and carry out
a reset of the system.
In some cases, a wheel was changed without
having carried out a reset.
System limits
The system does not function properly if a re‐
set has not been carried out, e.g., a flat tire is
reported even though the tire inflation pres‐
sures are correct.
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The tire pressure depends on the temperature
of the tire. If the tire temperature rises, e.g.,
due to driving or because of the heat of the
Sun, the tire inflation pressure increases also.
The tire pressure is reduced when the tire
temperature falls again. This behavior may
cause a warning to be issued if temperatures
fall very sharply.
Malfunction The yellow warning lamp flashes and
then lights up continuously. A Check
Control message is displayed. No flat
tire or loss of tire pressure can be detected.
Display in the following situations:▷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 conceptThe 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
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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.
Status display The current status of the Flat Tire Monitor can
be displayed on the Control Display, e.g.,
whether or not the FTM is active.1."Vehicle Info"2."Vehicle status"3. "Flat Tire Monitor (FTM)"
The status is displayed.
Initialization
The initialization process adopts the set infla‐
tion tire pressures as reference values for the
detection of a flat tire. Initialization is started by
confirming the inflation pressures.
Do not initialize the system when driving with
snow chains.
1."Vehicle Info"2."Vehicle status"3. "Perform reset"4.Start the engine - do not drive away.5.Start the initialization with "Perform reset".6.Drive away.
The initialization is completed while driving,
which can be interrupted at any time.
The initialization automatically continues when
driving resumes.
Indication of a flat tire
The yellow warning lamp lights up. A
Check Control message is displayed.
There is a flat tire or a major loss in tire
inflation pressure.1.Reduce your speed and stop cautiously.
Avoid sudden braking and steering maneu‐
vers.2.Identify the damaged wheel. Do so by
checking the tire inflation pressure using
the Mobility System. If the tire inflation
pressure in all tires is correct, the Flat Tire
Monitor may not have been initialized. In
this case, initialize the system.3.Repair flat tire with the Mobility System, re‐
fer to page 166, or replace the damaged
wheel.
System limits
Sudden tire damage
Sudden serious tire damage caused by
external influences cannot be indicated in ad‐
vance.◀
A natural, even pressure loss in all four tires
cannot be detected. Therefore, check the tire
inflation pressure regularly.
The system could be delayed or malfunction in
the following situations:
▷When the system has not been initialized.▷When driving on a snowy or slippery road
surface.▷Sporty driving style: slip in the drive
wheels, high lateral acceleration.▷When driving with snow chains.
Intelligent Safety
The concept
Depending on how the vehicle is equipped, In‐
telligent Safety consists of one or more of the
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PDC Park Distance Con‐trol 119
Pedestrian detection, refer to Night Vision 104
Pedestrian warning with city braking function 102
People detection, refer to Night Vision 104
Permissible axle load 197
Personal Profile 31
Pinch protection system, glass sunroof 43
Pinch protection system, win‐ dows 42
Plastic, care 192
Power failure 182
Power sunroof, glass 42
Power windows 41
Pressure, tire air pres‐ sure 161
Pressure warning FTM, tires 98
Preventing Auto Start Stop 62
Profile, refer to Personal Pro‐ file 31
Programmable memory but‐ tons, iDrive 20
Protective function, glass sunroof 43
Protective function, win‐ dows 42
Push-and-turn switch, refer to Controller 16
R Radiator fluid 175
Radio-operated key, refer to Remote control 30
Radio ready state 60
Radio, see user's manual for Navigation, Entertainment
and Communication
Rain sensor 71
Rear lamps 180 Rearview mirror 51
Rear window defroster 132
Recirculated-air mode 132
Recommended tire brands 165
Refueling 158
Remaining range 79
Remote control/key 30
Remote control, malfunc‐ tion 35
Remote control, univer‐ sal 135
Replacement fuse 182
Replacing bulbs, see Lamp replacement 178
Replacing parts 178
Replacing wheels/tires 165
Reporting safety defects 9
Reserve warning, refer to Range 79
Reset, Tire Pressure Monitor TPM 97
Residual heat, automatic cli‐ mate control 132
Retaining straps, securing cargo 153
Retreaded tires 166
Reversing lamp, bulb replace‐ ment 181
Roadside parking lamps 89
Roller sunblinds 42
RON gasoline quality 160
Rope for tow-starting/ towing 188
Rubber components, care 192
S Safe braking 150
Safety 7
Safety belt reminder for driv‐ er's seat and front passen‐
ger seat 48
Safety belts 48
Safety belts, care 192 Safety Package, refer to Ac‐
tive Protection 110
Safety systems, airbags 93
Saving fuel 154
Screen, refer to Control Dis‐ play 16
Screwdriver 178
Screw thread for tow fit‐ ting 189
Sealant 166
Seat belts, refer to Safety belts 48
Seat heating, front 47
Seating position for chil‐ dren 55
Seat, mirror, and steering wheel memory 50
Seats 45
Seat ventilation, front 47
Selection list in instrument cluster 83
Selector lever 65
Sensors, care 193
Sequential mode 66
Service and warranty 7
Service requirements, Condi‐ tion Based Service
CBS 176
Service requirements, dis‐ play 80
Service, Roadside Assis‐ tance 185
Services, ConnectedDrive
Servotronic 116
Settings, locking/unlock‐ ing 39
Settings, M Drive 53
Settings on Control Dis‐ play 86
Settings, storing for seat, mir‐ rors, steering wheel 50
Shift Lights 68
Shoulder support 47
Side airbags 93
Side View 126
Signaling, horn 12 Seite 206ReferenceEverything from A to Z206
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