
Actions in the event of a flat tire
Normal tires1.Identify the damaged tire.
Do this by checking the air pressure in all
four tires.
If the tire inflation pressure in all four tires
is shown to be correct, it is possible that
the Tire Pressure Monitor did not perform
a reset. Then perform the reset.
If an identification is not possible, please
contact the service center.2.Fixing a flat tire, where applicable with the
Mobility System.
Run-flat tires
Maximum speed
You may continue driving with a damaged tire
at speeds up to 50 mph/80 km/h.
Continued driving with a flat tire
If continuing to drive with a damaged tire:
1.Avoid sudden braking and steering maneu‐
vers.2.Do not exceed a speed of 50 mph/80 km/h.3.Check the air pressure in all four tires at
the next opportunity.
If the tire inflation pressure in all four tires
is shown to be correct, it is possible that
the Tire Pressure Monitor did not perform
a reset. In that case, carry out a reset.
Possible driving distance with complete loss of
tire inflation pressure:
The possible driving distance after a loss of tire
inflation pressure depends on cargo load, driv‐
ing style and road conditions.
A vehicle with an average load has a possible
driving range of approx. 50 miles/80 km.
A vehicle with a damaged tire reacts differ‐
ently, e.g., it has reduced lane stability during
braking, a longer braking distance and different
self-steering properties. Adjust your driving
style accordingly. Avoid abrupt steering ma‐
neuvers or driving over obstacles, e.g., curbs,
potholes, etc.
Because the possible driving distance de‐
pends on how the vehicle is used during the
trip, the actual distance may be shorter or lon‐
ger depending on the driving speed, road con‐
ditions, external temperature, cargo load, etc.
Continued driving with a flat tire
Drive moderately and do not exceed a
speed of 50 mph/80 km/h.
Your car handles differently when you lose tire
inflation pressure, e.g., your lane stability is re‐
duced when braking, braking distances are
longer and the self-steering properties will
change.◀
Final tire failure
Vibrations or loud noises while driving
can indicate the final failure of a tire. Reduce
speed and stop; otherwise, pieces of the tire
could come loose and cause an accident. Do
not continue driving and contact your service
center.◀
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.▷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.Seite 112ControlsSafety112
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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 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.Seite 113SafetyControls113
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FTM Flat Tire MonitorThe concept
The system detects tire inflation pressure loss
on the basis of rotation speed differences be‐
tween the individual wheels while driving.
In the event of a tire inflation pressure loss, the
diameter and therefore the rotational speed of
the corresponding wheel changes. This will be
detected and reported as a flat tire.
The system does not measure the actual infla‐
tion pressure in the tires.
Functional requirements
The system must have been initialized when
the tire inflation pressure was correct; other‐
wise, reliable flagging of a flat tire is not as‐
sured. Initialize the system after each correc‐
tion of the tire inflation pressure and after
every tire or wheel change.
Status display The current status of the Flat Tire Monitor canbe displayed on the Control Display, e.g.,
whether or not the FTM is active.
On the Control Display:1."Vehicle info"2."Vehicle status"3. "Flat Tire Monitor (FTM)"
The status is displayed.
Initialization
When initializing the once set inflation tire
pressures serve as reference values in order to
detect a flat tire. Initialization is started by con‐
firming the tire inflation pressures.
Do not initialize the system when driving with
snow chains.
On the Control Display:
1."Vehicle info"2."Vehicle status"3. "Perform reset"4.Start the engine - do not drive off.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.Check whether the vehicle is fitted with
regular tires or run-flat tires.
Run-flat tires, refer to page 204, are la‐
beled with a circular symbol containing the
letters RSC marked on the tire's sidewall.
Do not continue driving without run-flat
tires
Do not continue driving if the vehicle is not
equipped with run-flat tires; continued driving
may result in serious accidents.◀
When a flat tire is indicated, DSC Dynamic Sta‐
bility Control is switched on if needed.
System limits Sudden tire damage
Sudden serious tire damage caused by
external circumstances cannot be recognized
in advance.◀
A natural, even tire inflation pressure loss in all
four tires will not be recognized. Therefore,
check the tire inflation pressure regularly.
The system could be delayed or malfunction in
the following situations:
Seite 114ControlsSafety114
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Cruise controlThe concept The system maintains a preset speed via the
buttons on the steering wheel. The system
brakes on downhill gradients if engine braking
is insufficient.
General information
Depending on the driving settings, the features
of the cruise control can change in certain
areas.
Hints Unfavorable conditions
Do not use the system if unfavorable
conditions make it impossible to drive at a con‐
stant speed, e.g.:▷On winding roads.▷In heavy traffic.▷On slippery roads, in fog, snow or rain, or
on a loose road surface.
Otherwise, you could lose control of the vehi‐
cle and cause an accident.◀
Controls
At a glance
Press but‐
tonFunctionCruise control on/off, interrupt,
refer to page 146Store/maintain speed, refer to
page 147Resume speed, refer to
page 147Rocker reel:
Maintain, store, change speed,
refer to page 147Buttons are arranged according to vehicle's
series, optional features and country specifica‐
tions.
Switching on Press button on the steering wheel.
The marking in the speedometer is set to the
current speed.
The cruise control can be used.
Switch off Deactivated or interrupted system
With deactivated or interrupted system
use your brakes, steering and moves as usual
to avoid the chance of an accident.◀
Press button on the steering wheel.▷If active: press twice.▷If interrupted: press once.
The displays go out. The stored desired speed
is deleted.
Interrupting When active, press the button.
The system is automatically interrupted if:
▷The brakes are applied.▷Selector lever position D is disengaged.▷DTC Dynamic Traction Control is activated
or DSC is deactivated.▷DSC is actively controlling stability.▷When SPORT+ is activated with Driving
Dynamics Control.Seite 146ControlsDriving comfort146
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Residual cooling
When the automatic climate control has re‐
duced the interior temperature, this tempera‐
ture can be maintained after the engine has
been switched off. This function can be acti‐
vated up to 15 minutes after the engine is
switched off and for a maximum period of 6 mi‐
nutes.
Functional requirement▷The high-voltage battery is sufficiently
charged.▷External temperature at least ap‐
prox. 59 ℉/15 ℃.
Switching on
1.Switch off the ignition.2. Press the right side of the button
on the driver's side.
The symbol appears on the automatic cli‐
mate Control Display.
The interior temperature, air flow and air distri‐
bution can be adjusted with the radio-ready
state switched on.
Switch off Press and hold the left button.
The symbol on the automatic climate Con‐
trol Display disappears.
Parked-car ventilation The conceptThe parked-car ventilation ventilates the vehi‐
cle interior and lowers its temperature, if
needed.
The system can be switched on and off di‐
rectly or by using two preset departure times.
The reel-on time is automatically determined
based on the temperature. The system
promptly switches on before the selected de‐
parture time.
Open the vents to allow air to flow out.
Functional requirement▷When the departure time is preselected:
depends on internal, external and set tem‐
perature.▷When operated directly and if there is no
parked-car heating: any external tempera‐
ture.
Switching on/off directly
On the Control Display:
1."Settings"2."Climate"3."Activate now"
The symbol on the automatic climate con‐
trol flashes if the system is switched on.
The system continues to run for some time af‐
ter being switched off.
Setting departure time
On the Control Display:
1."Settings"2."Climate"3.Select the departure time.
Turn the controller until the desired depar‐
ture time field has been selected and press
Controller.4.Set the time.
Turn the controller until the desired time is
set and press the controller.
Activating the departure time
On the Control Display:
1."Settings"2."Climate"3.Activating the desired departure time:
"for departure at"Seite 166ControlsClimate control166
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Activate ECO PROPress button repeatedly until ECO
PRO is displayed in the instrument
cluster.
Configuring ECO PRO
Via the Driving Dynamics Control1.Activate ECO PRO.2."Configure ECO PRO"3.Configure the program.
Via the iDrive
1."Settings"2."ECO PRO mode"
Or
1."Settings"2."Driving mode"3."Configure ECO PRO"
Configure the program.
ECO PRO Tip
▷"Tip at:":
Adjust the ECO PRO speed.▷"ECO PRO speed warning":
The output is reduced once the set ECO
PRO speed is reached.
ECO PRO climate control
"ECO PRO climate control"
Climate control is set to be fuel-efficient.
By making a slight change to the set tempera‐
ture, or slowly adjusting the rate of heating or
cooling of the car's interior, fuel consumption
can be economized.
The mirror heating is made available when out‐
side temperatures are very cold.
ECO PRO potential
Shows potential savings with the current set‐
tings in percentages.
Display in the instrument cluster
ECO PRO bonus range An adjusted driving style helps
you extend your driving range.
This may be displayed as the
bonus range in the instrument
cluster.
The bonus range is shown in the range display.
The bonus range is automatically reset every
time the vehicle is refueled.
Driving styleDisplay in the instrument cluster with ex‐
panded scope.
A bar display in the instrument cluster indi‐
cates your current driving efficiency.
Mark in the area of arrow 1: display of the en‐
ergy recovered by coasting or when braking.
Mark in the area of arrow 2: display when ac‐
celerating.
Your driving style's efficiency is shown by the
bar's color:
▷Blue display: efficient driving style as long
as the mark moves within the blue range.▷Gray display: adjust driving style, e. g. by
backing off the accelerator pedal.Seite 190Driving tipsSaving fuel190
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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.
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 199, 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 199, and adjust as necessary.
Seite 198MobilityWheels and tires198
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RES button 142
RES button, see Active Cruise Control, ACC 139
RES button, see Cruise con‐ trol 146
Reserve warning, refer to Range 93
Reset, Tire Pressure Monitor TPM 111
Residual cooling 166
Residual heat, automatic cli‐ mate control 163
Retaining straps, securing cargo 186
Retreaded tires 203
Reversing lamp, bulb replace‐ ment 219
Roadside parking lights 103
Roller sunblinds 52
RON recommended fuel grade 196
Roofliner 17
Roof load capacity 235
Roof-mounted luggage rack 186
Rope for tow-starting/ towing 225
RSC Run Flat System Com‐ ponent, refer to Run-flat
tires 204
Rubber components, care 230
Run-flat tires 204
S Safe braking 183
Safety 7
Safety belt reminder for driv‐ er's seat and front passen‐
ger seat 60
Safety belts 59
Safety belts, care 230
Safety of the hybrid sys‐ tem 226 Safety Package, refer to Ac‐
tive Protection 131
Safety reel, windows 51
Safety systems, airbags 107
Saving fuel 188
Screen, refer to Control Dis‐ play 18
Screwdriver, see Onboard ve‐ hicle tool kit 215
Screw thread, see screw thread for tow fitting, screw
thread for tow fitting 226
Seat belts, refer to Safety belts 59
Seat heating, front 58
Seat heating, rear 58
Seating position for chil‐ dren 67
Seat, mirror, and steering wheel memory 63
Seats 55
Seat ventilation, front 59
Selection list in instrument cluster 96
Selector lever, Steptronic transmission 82
Sensors, care 231
Service and warranty 8
Service requirements, Condi‐ tion Based Service
CBS 213
Service requirements, dis‐ play 93
Service, Roadside Assis‐ tance 223
Services, ConnectedDrive
SET button, see Active Cruise Control, ACC 139
SET button, see Cruise con‐ trol 146
Settings, locking/unlock‐ ing 48
Settings on Control Dis‐ play 99
Settings, storing for seat, mir‐ rors, steering wheel 63 Shift paddles on steering
wheel 83
Shoulder support 58
Side airbags 107
Side View 153
Signaling, horn 14
Signals when unlocking 48
Silent Start, electric drive readiness 72
Sitting safely 55
Size 234
Slide/tilt glass roof 52
Smallest turning radius 234
Smoker's package 170
Snow chains 204
Socket 171
Socket, OBD Onboard Diag‐ nostics 213
SOS button 222
Spare fuse 221
Speaker lighting 106
Specified engine oil types 210
Speed, average 97
Speed limit detection, com‐ puter 97
Speed limiter, display 94
Speed Limit Information 94
Speed warning 98
Split screen 23
SPORT+ - program, Dynamic Driving Control 137
Sport displays, torque dis‐ play, performance dis‐
play 98
SPORT program, driving dy‐ namics 137
Sport program, transmis‐ sion 83
Stability control systems 134
Standing air conditioning, re‐ mote control 49
Start/Stop button 71
Start function during malfunc‐ tion 37 Seite 243Everything from A to ZReference243
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