
ing the area of the interference, the system
automatically becomes active again.▷TPM could not conclude the reset: perform
the reset of the system again.▷A wheel without TPM electronics is fitted:
have the service center check it if needed.▷Malfunction: have the system checked by
your service center.
For more information, see Tire Pressure Moni‐
tor, refer to page 99.
Steering system Steering system in some cases defec‐
tive.
Have the steering system checked by
the service center.
Engine functions Have the vehicle checked by the serv‐ice center.
For additional information, refer to On-
board Diagnostics socket, refer to page 179.
Acoustic pedestrian protection inactive Acoustic pedestrian protection possi‐
bly defective.
Have the system checked by the serv‐
ice center.
Green lights Turn signal Turn signal on.
Unusually rapid flashing of the indicator
lamp indicates that a turn signal bulb
has failed.
For additional information, refer to Turn signal, refer to page 67.
Parking lights, headlight control
Parking lights or headlights are acti‐
vated.
For additional information, refer to
Parking lights/low beams, headlight control, re‐
fer to page 92.
High-beam Assistant High-beam Assistant is switched on.
High beams are activated and off auto‐
matically as a function of the traffic sit‐
uation.
For additional information, refer to High-beam
Assistant, refer to page 94.
Cruise control The system is switched on. It maintains
the speed that was set using the con‐
trol elements on the steering wheel.
Blue lights
High beams High beams are activated.
For additional information, refer to High
beams, refer to page 68.
General lamps
Check Control At least one Check Control message is
displayed or is stored. The symbol is
shown in the display of the instrument
cluster.
Text messagesText messages in combination with a symbol
in the instrument cluster explain a Check Con‐ trol message and the meaning of the indicator
and warning lights.Seite 81DisplaysControls81
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Status control displayTire and system status are indicated by the
color of the wheels and a text message on the
Control Display.
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.
Status information
The status control display additionally shows
the current tire inflation pressures and, de‐
pending on the model, tire temperatures. It
shows the actual values read; they may vary depending on driving style or weather condi‐
tions.
Carry out reset Reset the system after each adjustment of the
tire inflation pressure and after every tire or
wheel change.
On the Control Display and on the vehicle:
1."Vehicle info"2."Vehicle status"3. "Perform reset"4.Switch on drive readiness – do not drive
off.5.Reset tire inflation pressure:"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 set tire inflation pressures are
accepted as reference values. The reset is
completed automatically while driving.
The progress of the reset is displayed.
After a successfully completed Reset, the
wheels on the Control Display are shown in
green and "Tire Pressure Monitor (TPM)
active" is displayed.
You may interrupt this trip at any time. When
you continue the reset resumes automatically.
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 inflation pressures before
the last reset.
Reduce your speed and stop cautiously. Avoid
sudden braking and steering maneuvers. Do
not continue driving, and contact the service
center.
If a Mobility System is not available, contact
the service center.
A low tire inflation pressure might turn on DSC
Dynamic Stability Control.
Required tire inflation pressure check
message
A Check Control message is displayed in the
following situations
▷The system has detected a wheel change,
but no reset was done.Seite 100ControlsSafety100
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▷Inflation was not carried out according to
specifications.▷The tire inflation pressure has fallen below
the level of the last confirmation.
In this case:
▷Check the tire pressure and correct as
needed.▷Carry out a reset of the system after a tire
change.
System limits
The system does not function properly if a re‐
set has not been carried out, e.g., a flat tire is
reported though tire inflation pressures are
correct.
The tire inflation pressure depends on the
tire's temperature. Driving or exposure to the
sun will increase the tire's temperature, thus
increasing the tire inflation pressure. The tire
inflation pressure is reduced when the tire
temperature falls again. These circumstances
may cause a warning when 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 inflation pressure can be de‐
tected.
Display in the following situations:
▷A wheel without TPM electronics is fitted:
have the service center check it if needed.▷Malfunction: have the system checked by
your service center.▷TPM was unable to complete the reset.
Reset the system again.▷Interference through systems or devices
with the same radio frequency: after leav‐
ing the area of the interference, 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 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 vehicleSeite 101SafetyControls101
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Wheels and tiresVehicle features and options
This chapter describes all standard, country-
specific and optional features offered with the
series. It also describes features that are not
necessarily available in your car, e. g., due to
the selected options or country versions. This
also applies to safety-related functions and
systems. The respectively applicable country
provisions must be observed when using the
respective features and systems.
Tire inflation pressure Safety information
The tire characteristics and tire inflation pres‐
sure influence the following:▷The service life of the tires.▷Road safety.▷Driving comfort.
Checking the tire inflation pressure
Check the tire inflation pressure regularly
Regularly check the tire inflation pres‐
sure, and correct it as needed: at least twice a
month and before a long trip. If you fail to ob‐
serve this precaution, you may be driving on
tires with incorrect tire pressures, a condition
that may not only compromise your vehicle's
driving stability, but also lead to tire damage
and the risk of an accident.◀
Tires have a natural, consistent loss of tire in‐
flation pressure.
Tires heat up while driving, and the tire infla‐
tion pressure increases along with the tire's
temperature. The tire inflation pressure speci‐
fications relate to cold tires or tires with the
ambient temperature.
Only check the tire inflation pressure when the
tires are cold. This means after driving no more
than 1.25 miles/2 km or when the vehicle has
been parked for at least 2 hours.
The displays of inflation devices may under-
read by up to 1.45 psi/0.1 bar.
For Flat Tire Monitor: after correcting the tire
inflation pressure, reinitialize the Flat Tire
Monitor.
For Tire Pressure Monitor: after correcting the
tire inflation pressure, reset the Tire Pressure
Monitor.
Tire inflation pressure specifications
The tire inflation pressure table, refer to
page 164, contains all tire inflation pressure
specifications for the specified tire sizes at the
ambient temperature. Tire inflation pressure
specifications apply to approved tire sizes and
recommended tire brands. This information
can be obtained from your service center.
To identify the correct tire inflation pressure,
please note the following:▷Tire sizes of your vehicle.▷Maximum permitted driving speed.
Tire inflation pressures up to
100 mph/160 km/h
For speeds of up to 100 mph/160 km/h and for
optimum driving comfort, note the pressure
values in the tire inflation pressure table, refer
to page 164, and adjust as necessary.
Seite 163Wheels and tiresMobility163
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QQuick charging cable, see Level 2 charging cable 152
R Radiator fluid 177
Radio 6
Radio-operated key, refer to Remote control 38
Radio ready state 61
Rain sensor 69
Rear beverage holder, rear cup holder 135
Rear bottle holder, refer to Rear cup holder 135
Rear can holder, refer to Rear Cup holder 135
Rear cup holder 135
Rear holder for bever‐ ages 135
Rearview camera 117
Rearview mirror 54
Rear window defroster 127
Recirculated-air filter 127
Recirculated-air mode 125
Recommended fuel grade 161
Recommended tire brands 167
Refueling 158
Remaining range 83
Remote control/key 38
Remote control, malfunc‐ tion 43
Remote control, univer‐ sal 129
Replacement fuse 182
Replacing wheels/tires 167
Reporting safety defects 10
RES button, see Cruise con‐ trol 113
Reserve warning, refer to Range 83 Reset, Tire Pressure Monitor
TPM 100
Retreaded tires 167
Roadside parking lights 93
RON recommended fuel grade 161
Roofliner 17
Rubber components, care 189
S
Safe braking 140
Safety 7
Safety belt reminder for driv‐ er's seat and front passen‐
ger seat 53
Safety belts 53
Safety belts, care 189
Safety of the high-voltage system 34
Safety systems, airbags 96
SAVE Battery, maintaining charging state 64
Screen, refer to Control Dis‐ play 18
Screw thread, see screw thread for tow fitting, screw
thread for tow fitting 186
Sealant 168
Seat belts, refer to Safety belts 53
Seat heating, front 52
Seating position for chil‐ dren 57
Seats 51
Selection list in instrument cluster 86
Selector lever, Steptronic Sport transmission 71
Sensors, care 190
Service and warranty 8
Service requirements, Condi‐ tion Based Service
CBS 178 Service requirements, dis‐
play 84
Services, ConnectedDrive 6
SET button, see Cruise con‐ trol 113
Settings, locking/unlock‐ ing 46
Settings, mirrors 54
Settings on Control Dis‐ play 89
Shift paddles on the steering wheel 73
Side airbags 96
Side View 122
Signaling, horn 14
Signals when unlocking 47
Silent Start, electric drive readiness 63
Sitting safely 51
Size 194
Smallest turning radius 194
Snow chains 171
Socket 131
Socket, OBD Onboard Diag‐ nostics 179
SOS button 183
Spare fuse 182
Specified engine oil types 175
Speed, average 88
Speed limit detection, on- board computer 88
Speed limiter, display 85
Speed Limit Information 85
Speed warning 88
Split screen 23
Sport program, transmis‐ sion 72
Stability control systems 109
Standard charging cable, see Level 1 charging cable 152
Standard charging, see Level 1 Charging 155
Standing air conditioning, re‐ mote control 47
Start/Stop button 61 Seite 204ReferenceEverything from A to Z204
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