3.Set the parking brake.
Before driving into a car wash
So that the vehicle can roll into a car wash ob‐
serve instructions for going into an automatic
car wash, refer to page 291.
Auto Start/Stop function
The concept The Auto Start/Stop function helps save fuel.
The system switches off the engine during a
stop, e.g., in traffic congestion or at traffic lights. Drive readiness remains switched on.
The engine starts again automatically for driv‐
ing off.
Information After every engine start via the Start/Stop but‐
ton, the Auto Start/Stop function is activated or
deactivated, according to the last setting, refer
to page 99. If the Auto Start/Stop function is
active, it is available as soon as a speed of ap‐
prox. 3 mph, approx. 5 km/h is exceeded.
Engine stop
The engine is switched off automatically dur‐
ing a stop under the following conditions:
▷The selector lever is in selector lever posi‐
tion D.▷The brake pedal remains pressed while the
vehicle is stationary or the vehicle is held
by Automatic Hold.▷The driver's safety belt is buckled or the
driver's door is closed.
The air flow from the air conditioner is reduced
when the engine is switched off.
Displays in the instrument cluster
The display in the tachometer
indicates that the Auto Start/
Stop function is ready for an Au‐
tomatic engine start.
The display indicates that the
conditions for an automatic en‐
gine stop have not been met.
Functional limitations The engine is not switched off automatically in
the following situations:▷In case of a steep downhill grade.▷Brake not engaged strongly enough.▷The external temperature is high and auto‐
matic climate control is running.▷The car's interior has not yet been heated
or cooled to the required level.▷If window condensation is imminent.▷Engine or other parts not at operating tem‐
perature.▷Engine cooling is required.▷The wheels are at a sharp angle or the
steering wheel is being turned.▷Vehicle battery is heavily discharged.▷At higher elevations.▷The engine compartment lid is unlocked.▷HDC Hill Descent Control is activated.▷The parking assistant is activated.▷Stop-and-go traffic.▷Selector lever position in N or R.▷After driving in reverse.▷Use of fuel with high ethanol content.
Starting the engine
The engine starts automatically under the fol‐
lowing conditions:
Seite 98ControlsDriving98
Online Edition for Part no. 0140 2 964 330 - VI/15
Fuel gauge
Instrument cluster Vehicle tilt position may cause
the display to vary.
An arrow beside the fuel pump
symbol shows which side of the
vehicle the fuel filler flap is on.
Hints on refueling, refer to page 250.
Instrument cluster with enhanced features
Vehicle tilt position may causethe display to vary.
The current range is also dis‐
played as numerical value.
An arrow beside the fuel pump
symbol shows which side of the vehicle the
fuel filler flap is on.
Hints on refueling, refer to page 250.
Tachometer
Always avoid engine speeds in the red warning
field. In this range, the fuel supply is inter‐
rupted to protect the engine.
Operating readiness and
drive readiness
The letters OFF on the tachom‐
eter indicate that the drive readi‐
ness is switched off and operat‐
ing readiness is switched on.
The letters READY in the tach‐
ometer indicate that the vehicle
is ready for driving.Further information, see Idle state, operating
and drive readiness, refer to page 19.
Engine temperature▷Cold engine: the pointer is at
the low temperature end.
Drive at moderate engine
and vehicle speeds.▷Normal operating tempera‐
ture: the pointer is in the
middle or in the lower half of
the temperature display.▷Hot engine: the pointer is at the high end of
the temperature range. A Check Control
message is also displayed.
Check the coolant level, refer to page 277.
External temperature
If the indicator drops to +37 ℉/+3 ℃ or lower, a
signal sounds.
A Check Control message is displayed.
There is an increased risk of ice on roads.
WARNING
Even at temperatures above +37 ℉/+3 ℃
there can be a danger of icy roads, e.g. on
bridges or shady sections of road. There is risk
of an accident. Adjust your driving style to the
weather conditions at low temperatures.◀
Time The time is displayed in the instrument cluster.
Setting the time and time format, refer to
page 38.
Seite 118ControlsDisplays118
Online Edition for Part no. 0140 2 964 330 - VI/15
checked by a dealer’s service center or an‐
other qualified service center or repair
shop as needed.▷Malfunction: Have system checked by a
dealer’s service center or another qualified
service center or repair shop.▷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.
FTM Flat Tire Monitor
The 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.Seite 268MobilityWheels and tires268
Online Edition for Part no. 0140 2 964 330 - VI/15
Engine oilVehicle 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.
General information The engine oil consumption is dependent on
the driving style and driving conditions.
The engine oil consumption can increase in
the following situations, for example:▷Sporty driving style.▷Break-in of the engine.▷Idling of the engine.▷With use of engine oil types that are not
approved.
Therefore, regularly check the engine oil level
after refueling.
The vehicle is equipped with electronic oil
measurement.
The electronic oil measurement has two meas‐
uring principles:
▷Status display▷Detailed measurementElectronic oil measurement
Status display
The concept
The engine oil level is monitored electronically
while driving and shown on the Control Dis‐
play.
If the engine oil level reaches the minimum
level, a check control message is displayed.
Requirements
A current measured value is available after ap‐
prox. 30 minutes of driving. During a shorter
trip, the status of the last, sufficiently long trip
is displayed.
With frequent short-distance trips, regularly
perform a detailed measurement.
Displaying the engine oil level
About iDrive:1."My Vehicle"2."Vehicle status"3."Engine oil level"4. "Measure engine oil level"
The engine oil level is displayed.
Engine oil level display messages
Different messages appear on the Control Dis‐
play depending on the engine oil level. Pay at‐
tention to these messages.
If the engine oil level is too low within the next
125 miles/200 km, add engine oil, refer to
page 274.
CAUTION
A too low engine oil level causes engine
damage. There is risk of property damage. Im‐
mediately add engine oil.◀
Seite 273Engine oilMobility273
Online Edition for Part no. 0140 2 964 330 - VI/15
Take care not to add too much engine oil.CAUTION
Too much engine oil can damage the en‐
gine or the catalytic converter. There is risk of
property damage. Do not add too much engine
oil. Have too much engine oil siphoned off by a
dealer’s service center or another qualified
service center or repair shop.◀
Detailed measurement
The concept In the detailed measurement the engine oil
level is checked and displayed via a scale.
Gasoline engine:
If the engine oil level reaches the minimum
level, a check control message is displayed.
Diesel engine:
During the measurement, the idle speed is in‐
creased somewhat.
General information
A detailed measurement is only possible with
certain engines.
Requirements▷Vehicle is on level road.▷Selector lever in selector lever position N
or P and accelerator pedal not depressed.▷Engine is running and is at operating tem‐
perature.
Performing a detailed measurement
About iDrive:
1."My Vehicle"2."Vehicle status"3. "Measure engine oil level"4."Start measurement"
The engine oil level is checked and displayed
via a scale.
Time: approx. 1 minute.
Adding engine oil
Information CAUTION
A too low engine oil level causes engine
damage. There is risk of property damage.
Add engine oil within the next
125 miles/200 km.◀
CAUTION
Too much engine oil can damage the en‐
gine or the catalytic converter. There is risk of
property damage. Do not add too much engine
oil. Have too much engine oil siphoned off by a
dealer’s service center or another qualified
service center or repair shop.◀
WARNING
Operating materials, e.g. oils, greases,
coolants, fuels, can contain harmful ingredi‐
ents. There is risk of injuries or danger to life.
Observe the instructions on the containers.
Avoid the contact of articles of clothing, skin or
eyes with operating materials. Do not refill op‐
erating materials into different bottles. Store
operating materials out of reach of children.◀
General information
Establish idle state and safely park the vehicle
before engine oil is added.
Overview The oil filler neck is located in the engine com‐
partment, refer to page 271.
Opening the oil filler neck Only add engine oil when the message is dis‐
played in the instrument cluster. The quantity
to be added is indicated in the message dis‐
played in the instrument cluster.1.Opening the hood, refer to page 272Seite 274MobilityEngine oil274
Online Edition for Part no. 0140 2 964 330 - VI/15
Closing via door lock 62
Closing without remote con‐ trol 62
Clothes hooks 229
Coasting 245
Coasting with engine decou‐ pled, coasting 245
Coasting with idling en‐ gine 245
Collision warning with braking function 140
Collision warning with City braking function 140
Combination switch, see Turn signals 103
Combination switch, see Wiper system 103
Comfort Access 65
COMFORT drive mode, see Driving Dynamics Con‐
trol 110
COMFORT PLUS drive mode, see Driving Dynamics
Control 110
COMFORT PLUS, see Driv‐ ing Dynamics Control 110
COMFORT, see Driving Dy‐ namics Control 110
Communication 6
Compact wheel, see Emer‐ gency wheel 282
Compartments in the doors 226
Compatible devices 42
Compatible mobile phones 42
Compressor 260
Computer, see on-board computer 122
Condensation on win‐ dows 206
Condensation under the vehi‐ cle 236
Condition Based Service CBS 279
Confirmation signal 68 ConnectedDrive 6
ConnectedDrive Services 6
Connecting device 41
Connecting electrical devi‐ ces 219
Connecting mobile phone 41
Connecting smartphone 41
Connecting telephone 41
Connections 41
Continued driving with a flat tire 267 , 270
Control Display 21
Control Display, settings 38
Controller 22
Control systems, driving sta‐ bility 163
Convenient opening with the remote control 61
Coolant 277
Coolant level 277
Coolant temperature 118
Cooler 223
Cooling function 204
Cooling, maximum 204
Cooling system 277
Corrosion on brake discs 236
Cosmetic mirror 217
Courtesy lamps with the vehi‐ cle locked 61
Cross traffic warning 197
Cruise control 175
Cruise control, active with Stop & Go 168
Cruising range 123
Cupholder 228
Current fuel consump‐ tion 123
D
Damage, tires 258
Damping control, dy‐ namic 201
Data, technical 298
Daytime running lights 131 Defrosting, see Windows, de‐
frosting 206
Dehumidifying, air 204
Deleting personal data 40
Deletion of personal data 40
Departure time, parked-car heating 211
Departure time, parked-car ventilation 211
Destination distance 124
Device list 41
Digital clock 118
Dimensions 298
Dimmable exterior mirrors 86
Dimmable interior rearview mirror 86
Direction indicator, see Turn signals 103
Display in windshield 126
Display lighting, see Instru‐ ment lighting 133
Displays 113
Displays, cleaning 294
Disposal, coolant 278
Disposal, vehicle battery 285
Distance control, see PDC 180
Distance to destination 124
Divided screen view, split screen 27
Door handle lighting, see wel‐ come lights 130
Door lock 62
Door lock, see Remote con‐ trol 54
Doors, Automatic Soft Clos‐ ing 63
Downhill control 165
Drive mode 110
Drive-off assistant 163
Drive-off assistant, see DSC 163
Drive readiness, see starting the engine 97
Driving Dynamics Con‐ trol 110 Seite 304ReferenceEverything from A to Z304
Online Edition for Part no. 0140 2 964 330 - VI/15
QQueuing Assistant, see Steering and lane guidance
assistant including Traffic
Jam Assist 177
R Radiator fluid 277
Radio 6
Radio-operated key, see Re‐ mote control 54
Rain sensor 104
Rear automatic climate con‐ trol 207
Rear axle steering 166
Rear center armrest 227
Rear collision prevention 159
Rear collision warning 159
Rear cooler 223
Rear drink holder 228
Rear seats 78
Rear seats, basic position 80
Rear vanity mirror 86
Rearview camera, see Sur‐ round View 187
Rearview camera, without Surround View 184
Rearview mirror 85
Rear window defroster 206
Recirculated-air mode 205
Recommended fuel grade 252
Recommended tire brands 259
Refueling 250
Remaining range 123
Remote control/key 54
Remote control, malfunc‐ tion 62
Remote control, univer‐ sal 215
Remote control with dis‐ play 55
Replace front fog lamps 282 Replace front lamps 282
Replace headlamps 282
Replace key lights 282
Replace LED front fog lamps 282
Replace LED headlights 282
Replace light-emitting diodes, LEDs 282
Replacement fuse 285
Replace tail lamps 282
Replacing parts 281
Replacing wheels/tires 258
Reporting safety malfunc‐ tions 10
RES CNCL button, see Active Cruise Control, ACC 168
RES CNCL button, see Cruise control 175
Reserve warning, see Range 123
Reset, Tire Pressure Monitor TPM 265
Retaining straps, securing cargo 238
Retreaded tires 259
Roadside parking lights 130
Roller sunblinds 72
RON recommended fuel grade 252
Roofliner 18
Roof load capacity 299
Roof-mounted luggage rack 238
Rope for tow-starting/ towing 289
Route-ahead assistant 244
RSC Run Flat System Com‐ ponent, see Run-flat
tires 260
Rubber components, care 293
Run-flat tires 260
S Safe braking 235 Safety belt reminder for driv‐
er's seat and front passen‐
ger seat 81
Safety belts 80
Safety belts, care 293
Safety package, see Active Protection 160
Safety switch, windows 71
Safety systems, airbags 136
Safety systems, see Intelli‐ gent Safety 139
Saving fuel 240
Screen, see Control Dis‐ play 21
Screwdriver, see Onboard ve‐ hicle tool kit 281
Screw thread for tow fitting, see tow-starting/towing,
thread for tow fitting, see
tow-starting/towing 289
Sealant 260
Seat belts, see Safety belts 80
Seat cushion heating 91
Seat heating 91
Seating position for chil‐ dren 93
Seat, mirror, and steering wheel memory 87
Seats 76
Seats, front 76
Seats, rear 78
Seat ventilation 92
Selection list in instrument cluster 121
Selector lever, Steptronic transmission 106
Self-leveling suspension 200
Sensors, care 294
Service and warranty 8
Service requirements, Condi‐ tion Based Service
CBS 279
Service requirements, dis‐ play 119
Services, ConnectedDrive 6 Seite 309Everything from A to ZReference309
Online Edition for Part no. 0140 2 964 330 - VI/15