2015 BMW M4 CONVERTIBLE fuel pressure

▷The engine is not yet at operating temper‐
ature.▷The wheels are at a sharp angle or the
steering wheel is being turned.▷After driving in reverse.▷Fogging of the windows when the auto‐
matic climate control is switched on.▷Vehicle battery is heavily discharged.▷At higher elevations.▷The engine compartment lid is unlocked.▷The parking assistant is activated.▷Stop-and-go traffic.▷Use of fuel with high ethanol content.
Starting the engine
The engine starts automatically under the fol‐
lowing conditions:
▷M double-clutch transmission:
By releasing the brake pedal.▷Manual transmission:
The clutch pedal is pressed.
After the engine starts, accelerate as usual.
Safety mode
After the engine switches off automatically, it
will not start again automatically if any one of
the following conditions are met.
▷The driver's safety belt is unbuckled and
the driver's door is open.▷The hood was unlocked.
Some indicator lights light up for a varied
length of time.
The engine can only be started via the Start/
Stop button.
Functional limitations
Even if driving off was not intended, the deacti‐
vated engine starts up automatically in the fol‐
lowing situations:
▷Excessive warming of the car's interior
when the cooling function is switched on.▷The steering wheel is turned.▷Double-clutch transmission: Change from
selector lever position D to N, R or D/S.▷M double-clutch transmission: Accelerat‐
ing while simultaneously applying the
brake.▷The vehicle begins rolling.▷Fogging of the windows when the auto‐
matic climate control is switched on.▷Vehicle battery is heavily discharged.▷Excessive cooling of the car's interior when
the heating is switched on.▷Low brake vacuum pressure; this can oc‐
cur, e.g., if the brake pedal is depressed a
number of times in succession.
Preventing an automatic engine stop with aM double-clutch transmission
The concept To make it possible to drive off very quickly,
such as at an intersection, the automatic en‐
gine stop can be actively prevented.
Preventing an engine stop using the
brake pedal
The engine stop can be actively prevented
within one second after the vehicle comes to a
standstill.
▷Immediately after the vehicle comes to a
standstill, briefly press the brake pedal
forcefully.▷Then press the brake pedal with normal
braking force.Seite 66ControlsDriving66
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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.
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‐
Seite 105SafetyControls105
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Saving fuelVehicle features and optionsThis 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 Your vehicle contains advanced technology for
the reduction of fuel consumption and emis‐
sions.
Fuel consumption depends on a number of dif‐
ferent factors.
Carrying out certain measures, such as a mod‐
erate driving style and regular maintenance,
can influence fuel consumption and the envi‐
ronmental impact.
Remove unnecessary cargo
Additional weight increases fuel consumption.
Remove attached parts
following use
Attached parts on the vehicle impair the aero‐
dynamics and increase the fuel consumption.
Close the windows and glass
sunroof
Driving with the glass sunroof and windows
open results in increased air resistance and
thereby reduces the range.Tires
General information
Tires can affect fuel consumption in various
ways, e.g., tire size may influence fuel con‐
sumption.
Check the tire inflation pressure
regularly
Check and, if needed, correct the tire inflation
pressure at least twice a month and before
starting on a long trip.
Low tire inflation pressure increases rolling re‐
sistance and thus raises fuel consumption and
tire wear.
Drive away immediately
Do not wait for the engine to warm-up while
the vehicle remains stationary. Start driving
right away, but at moderate engine speeds.
This is the quickest way of warming the cold
engine up to operating temperature.
Look well ahead when
driving
Avoid unnecessary acceleration and braking.
By maintaining a suitable distance to the vehi‐
cle driving ahead of you.
Driving smoothly and proactively reduces fuel
consumption.
Avoid high engine speeds
As a rule: driving at low engine speeds lowers
fuel consumption and reduces wear.
Use 1st gear to get the vehicle moving. Start‐
ing with the 2nd gear, accelerate rapidly. WhenSeite 164Driving tipsSaving fuel164
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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
Winter tires are recommended for operating on
winter roads.
Although so-called all-season M+S tires 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 a respective symbol is displayed in your
field of vision. You can obtain this sign from the
tire specialist or from your service center.
Maximum speed for winter tires
Do not exceed the maximum speed for
the respective winter tires; otherwise, tire dam‐
age and accidents can occur.◀
Rotating wheels between axles The manufacturer of your vehicle advises
against switching wheels between the front
and rear axles. This can impair the handling
characteristics.
Rotating the tires is not permissible on vehi‐
cles with different tire sizes or rim sizes on the
front and rear axles.
StorageStore 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.Mobility System
The concept
With the Mobility System, minor tire damage
can be sealed quickly to enable continued
travel. To accomplish this, sealant is pumped
into the tires, which seals the damage from the
inside.
The compressor can be used to check the tire
inflation pressure.
Hints▷Follow the instructions on using the Mobi‐
lity System found on the compressor and
sealant container.▷Use of the Mobility System may be ineffec‐
tive if the tire puncture measures approx.
1/8 in/4 mm or more.▷Contact the nearest service center if the
tire cannot be made drivable.▷If possible, do not remove foreign bodies
that have penetrated the tire.▷Pull the speed limit sticker off the sealant
container and apply it to the steering
wheel.▷The use of a sealant can damage the TPM
wheel electronics. In this case, have the
electronics checked at the next opportu‐
nity and have them replaced if needed.
Enclosed areas
Do not let the engine run in enclosed
areas, since breathing in exhaust fumes may
lead to loss of consciousness and death. The
exhaust gases contain carbon monoxide, an
odorless and colorless but highly toxic gas.◀
Storage The Mobility System is located under the
cargo floor panel.
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No cleansers that contain alcohol or sol‐
vents
Do not use cleansers that contain alcohol or
solvents, such as lacquer thinners, heavy-duty
grease removers, fuel, or such; this could lead
to surface damage.◀
Safety belts
Dirty belt straps impede the reeling action and
thus have a negative impact on safety.
Chemical cleaning
Do not clean chemically; this can destroy
the webbing.◀
Use only a mild soapy solution, with the safety
belts clipped into their buckles.
Do not allow the reels to retract the safety
belts until they are dry.
Carpets and floor mats No objects in the area around the pedals
Keep floor mats, carpets, and any other
objects out of the pedal area; otherwise, the
function of the pedals could be impeded while
driving and create the risk of an accident.
Do not place additional floor mats over existing
mats or other objects.
Only use floor mats that have been approved
for the vehicle and can be properly attached to
floor.
Ensure that the floor mats are securely fas‐
tened again after they were removed for clean‐
ing, e.g.◀
Floor mats can be removed from the car's inte‐
rior for cleaning.
If the floor carpets are very dirty, clean with a
microfiber cloth and water or a textile cleaner.
To prevent matting of the carpet, rub back and
forth in the direction of travel only.Sensor/camera lenses
To clean sensors and camera lenses, use a
cloth moistened with a small amount of glass
detergent.
Displays/monitors Cleaning displays and screens
Do not use any chemical or household
cleaning agents; otherwise, surfaces can be af‐
fected.◀
Keeping out moisture
Keep all fluids and moisture away from
the unit; otherwise, electrical components can
be damaged.◀
Avoid pressure
Avoid pressing too hard when cleaning
and do not use abrasive materials; otherwise,
damage can result.◀
Clean with a clean, antistatic microfiber cloth.
Long-termWhen the vehicle is shut down for longer than
three months, special measures must be
taken. Additional information is available from
the service center.Seite 207CareMobility207
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Everything from A to Z
IndexA ABS, Antilock Brake Sys‐ tem 116
Acceleration Assistant, refer to Launch Control 74
Accessories and parts 7
Activated-charcoal filter 139
Active Blind Spot Detec‐ tion 113
Active M differential 119
Adaptive brake lights, refer to Brake force display 115
Adaptive Light Control 95
Adaptive M chassis 119
Additives, oil 185
Adjustments, seats/head re‐ straints 52
After washing vehicle 205
Airbags 99
Airbags, indicator/warning light 100
Air circulation, refer to Recir‐ culated-air mode 138
Air, dehumidifying, refer to Cooling function 137
Air distribution, manual 138
Air flow, automatic climate control 138
Air pressure, tires 172
Air vents, refer to Ventila‐ tion 139
Alarm system 44
Alarm, unintentional 45
All around the center con‐ sole 16
All around the roofliner 17
All around the steering wheel 14
All-season tires, refer to Win‐ ter tires 177 Alternating-code hand-held
transmitter 142
Alternative oil types 185
Ambient light 97
Antifreeze, washer fluid 70
Antilock Brake System, ABS 116
Anti-slip control, refer to DSC 117
Anti-theft protection, see through-loading sys‐
tem 149
Approved axle load 210
Approved engine oils, see Suitable engine oil
types 185
Arrival time 88
Ash tray 145
Assistance when driving off 120
Attentiveness assistant 115
AUTO intensity 137
Automatic car wash 204
Automatic climate con‐ trol 136
Automatic Curb Monitor 58
Automatic deactivation, front- seat passenger airbags 101
Automatic headlight con‐ trol 95
Automatic locking 43
Automatic recirculated-air control 138
AUTO program, automatic cli‐ mate control 137
AUTO program, intensity 137
Auto Start/Stop function 65
Average fuel consumption 88
Average speed 88
Axle loads, weights 210 B
Backrest curvature, refer to Lumbar support 53
Backrest, width 53
Band-aids, refer to First aid kit 199
Bar for tow-starting/ towing 202
Battery replacement, vehicle battery 195
Battery replacement, vehicle remote control 35
Battery, vehicle 195
Belts, safety belts 55
Beverage holder, cu‐ pholder 153
BMW Assist, see user's manual for Navigation, En‐
tertainment and Communi‐
cation
BMW Driver’s Guide App 6
BMW Homepage 6
BMW Internet page 6
BMW maintenance sys‐ tem 188
BMW M technology 156
Bottle holder, refer to Cu‐ pholders 153
Brake assistant 116
Brake discs, break-in 158
Brake force display 115
Brake lights, adaptive 115
Brake lights, brake force dis‐ play 115
Brake pads, break-in 158
Braking, hints 159
Breakdown assistance 198
Break-in 158
Brightness of Control Dis‐ play 91 Seite 212ReferenceEverything from A to Z212
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External temperature warn‐ing 82
Eyes for securing cargo 163
F
Failure message, see Check Control 78
False alarm, refer to Uninten‐ tional alarm 45
Fan, refer to Air flow 138
Filler neck for engine oil 184
Fine wood, care 206
First aid kit 199
Fitting for towing, see Tow fit‐ ting 202
Flat tire, changing wheels 195
Flat tire, Tire Pressure Moni‐ tor TPM 103
Flat tire, warning lamp 104
Flooding 159
Floor carpet, care 207
Floor mats, care 207
Fold down the rear seat back‐ rest, see Though-loading
system 149
Fold-out position, wiper 70
Foot brake 159
Front airbags 99
Front-end collision warning with City Braking func‐
tion 107
Front lights 191
front-seat passenger airbags, automatic deactivation 101
Front-seat passenger airbags, indicator lamp 101
Fuel 170
Fuel consumption, current 83
Fuel consumption, refer to Average fuel consump‐
tion 88
Fuel filler flap 168
Fuel gauge 81
Fuel lid 168 Fuel quality 170
Fuel recommendation 170
Fuel, tank capacity 211
Fuse 196
G
Garage door opener, refer to Universal Integrated Remote
Control 141
Gasoline 170
Gear change 73
Gear shift indicator 85
General driving notes 159
Glare shield 145
Glove compartment 151
Gross vehicle weight, ap‐ proved 210
Ground clearance 160
H
Handbrake, refer to parking brake 67
Hand-held transmitter, alter‐ nating code 142
Hardtop 46
Hardtop, rollover protection system 102
Hardtop, trunk partition 49
Hazard warning flashers 198
Headlight control, auto‐ matic 95
Headlight courtesy delay fea‐ ture 94
Headlight flasher 68
Headlight glass 191
Headlights 191
Headlights, care 205
Headlight washer system 68
Head restraints 52
Head restraints, front 56
Head-up Display 91
Head-up Display, care 207
Head-up display, M view 92 Head-up display, standard
view 91
Heating, neck 54
Heavy cargo, stowing 163
Height, vehicle 210
High-beam Assistant 96
High beams 68
High beams/low beams, refer to High-beam Assistant 96
High-performance en‐ gine 156
Hills 160
Hill start assistant, refer to Drive-off assistant 120
Hints 6
Holder for beverages 153
Homepage 6
Hood 181
Horn 14
Hot exhaust system 159
HUD Head-up Display 91
Hydroplaning 159
I
Ice warning, see External temperature warning 82
Icy roads, see External tem‐ perature warning 82
Identification marks, tires 173
Identification number, see ve‐ hicle identification num‐
ber 9
iDrive 18
Ignition key, refer to Remote control 34
Ignition off 63
Ignition on 63
Indication of a flat tire 104
Indicator and alarm lamps, see Check Control 78
Indicator lamp, see Check Control 78
Individual air distribution 138
Individual settings, refer to M Drive 116 Seite 215Everything from A to ZReference215
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Individual settings, refer toPersonal Profile 35
Inflation pressure, tires 172
Info display, refer to On- Board computer 87
Initialize, Tire Pressure Moni‐ tor TPM 104
Instrument cluster 77
Instrument cluster, electronic displays 77
Instrument lighting 97
Integrated key 34
Integrated Owner's Manual in the vehicle 30
Intelligent Emergency Re‐ quest 198
Intelligent Safety 106
Intensity, AUTO pro‐ gram 137
Interior equipment 141
Interior lights 97
Interior lights during unlock‐ ing 37
Interior lights with the vehicle locked 38
Interior motion sensor 45
Interior rearview mirror, auto‐ matic dimming feature 58
Interior rearview mirror, com‐ pass 143
Internet page 6
Interval display, service re‐ quirements 84
Interval mode 69
J Jacking points for the vehicle jack 195
Jump-starting 199
K
Key/remote control 34
Keyless Go, refer to Comfort Access 41 Key Memory, refer to Per‐
sonal Profile 35
Knee airbag 99
L Lamp replacement 190
Lamp replacement, front 191
Lamp replacement, rear 193
Lane departure warning 112
Lane margin, warning 112
Language on Control Dis‐ play 90
Lashing eyes, securing cargo 163
LATCH child restraint sys‐ tem 62
Launch Control 74
Leather, care 206
LED light, bulb replace‐ ment 192
LEDs, light-emitting di‐ odes 191
Length, vehicle 210
Letters and numbers, enter‐ ing 25
Light alloy wheels, care 206
Light control 95
Light-emitting diodes, LEDs 191
Lighter 145
Lighting 94
Lights 94
Lights and bulbs 190
Light switch 94
Load 163
Loading 162
Loading aid 147
Loading, see interior equip‐ ment 147
Lock, door 39
Locking/unlocking via door lock 39
Locking/unlocking with re‐ mote control 37
Locking, automatic 43 Locking, settings 43
Locking via trunk lid 41
Low beams 94
Low beams, automatic, refer to High-beam Assistant 96
Lower back support 53
Low Speed Assistant 72
Lumbar support 53
M
Maintenance 188
Maintenance require‐ ments 188
Maintenance, service require‐ ments 84
Maintenance system, BMW 188
Make-up mirror 145
Malfunction displays, see Check Control 78
Manual air distribution 138
Manual air flow 138
Manual operation, door lock 39
Manual operation, exterior mirrors 58
Manual operation, fuel filler flap 168
Manual operation, Park Dis‐ tance Control PDC 125
Manual operation, rearview camera 127
Manual operation, Side View 130
Manual operation, Top View 131
Manual transmission 71
Marking on approved tires 176
Master key, refer to Remote control 34
Maximum cooling 137
Maximum speed, display 86
Maximum speed, winter tires 177 Seite 216ReferenceEverything from A to Z216
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