BMW M4 2017 Repair Manual

WARNING
The stability of the child restraint system
is limited or compromised with incorrect seat adjustment or improper installation of the childseat. There is a risk of injuries or danger to life.
Make sure that the child restraint system fits
securely against the backrest. If possible, adj
just the backrest tilt for all affected backrests
and correctly adjust the seats. Make sure that
seats and backrests are securely engaged. If
possible, adjust the height of the head rej
straints or remove them.'

Locking
the
safety
belt1.Pull out the belt strap completely.2.Secure the child restraint system with the
safety belt.3.Allow the belt strap to be pulled in and pull it tight against the child restraint system.
The safety belt is locked.Unlocking
the
safety
belt1.Unbuckle the belt buckle.2.Remove the child restraint system.3.Allow the belt strap to be pulled in comj
pletely.
LATCH
child
restraint
fixing
system
General
information
LATCH: Lower Anchors and Tether for Chilj
dren.
Pay attention to the operating and safety inforj mation of the child restraint system manufacjturer when installing and using LATCH child
restraint fixing system.
Mounts
for
the
lower
LATCH
anchors The lower anchors may be used to attach the
CRS to the vehicle seat up to a combined child
and CRS weight of 65 lb/30 kg when the child
is restrained by the internal harnesses.
Safety
information WARNING
If the LATCH child restraint fixing sysj
tems are not correctly engaged, the protective
effect of the LATCH child restraint fixing sysj
tem can be limited. There is a risk of injuries or
danger to life. Make sure that the lower anj
chors are securely engaged and that the
LATCH child restraint fixing system fits sej curely against the backrest.'

Only mount child restraint systems to the upjper retaining straps.'

DrivingVehicle
features
and
options
This chapter describes all standard, country- specific and optional features offered with theseries. It also describes features that are notnecessarily available in your vehicle, e. g., due
to the selected options or country versions.
This also applies to safety-related functions
and systems. When using these functions and systems, the applicable country provisions
must be observed.
Start/Stop
buttonConcept Pressing the Start/Stop button
switches the ignition on or off
and starts the engine.
M double-clutch transmission:
the engine starts with the brake
pedal pressed when you press the Start/Stop button.
Manual transmission: the engine starts with the clutch pedal pressed when the Start/Stop button is pressed.
Ignition
on M double-clutch transmission: press the Start/
Stop button, and do not press on the brake pedal at the same time.
Manual transmission: press the Start/Stop butj
ton without stepping on the clutch pedal.
All vehicle systems are ready for operation.
Most of the indicator and warning lights in the
instrument cluster light up for a varied length
of time.
To save battery power when the engine is off,
switch off the ignition and any unnecessary
electronic systems/power consumers.Ignition
off
M double-clutch transmission: press the Start/
Stop button again without stepping on the brake.
Manual transmission: press the Start/Stop butj ton again without stepping on the clutch pedal.
All indicator lights in the instrument cluster go out.
To save battery power when the engine is off, switch off the ignition and any unnecessary
electronic systems/power consumers.
Safety
measures When switching off the ignition, the transmisj
sion position P is selected automatically if the
selector lever position D or R is selected.
The ignition is switched off automatically in the following situations while the vehicle is stationj
ary and the engine is off:'yWhen locking the vehicle, and when the
low beams are activated.'yShortly before the battery is discharged completely, so that the engine can still be
started.'yWhen opening or closing the driver door, if
the driver's safety belt is unbuckled and
the low beams are switched off.'yWhile the driver's safety belt is unbuckled with driver's door open and low beams off.
The low beams switch to parking lights after
approx. 15 minutes of no use.
Radio
ready
state
Activate radio-ready state: when the engine is
running: press the Start/Stop button.
Some electronic systems/power consumers
remain ready for operation.
The radio-ready state is switched off automatij
cally in the following situations:
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'yAfter approx. 8 minutes.'yWhen the vehicle is locked using the cenj
tral locking system.'yShortly before the battery is discharged completely, so that the engine can still be
started.
The radio-ready state remains active if, e.g., the ignition is automatically switched off for the following reasons:
'yOpening or closing the driver's door.'yUnfastening of the driver's safety belt.'yWhen automatically switching from low
beams to parking lights.
If the engine is switched off and the ignition is
switched on, the system automatically
switches to the radio-ready state if the lights are turned off or, if correspondingly equipped,the daytime running lights are activated.
Starting
the
engine
Safety
information DANGER
If the exhaust pipe is blocked or ventilaj
tion is insufficient, harmful exhaust gases can enter into the vehicle. The exhaust gases conjtain carbon monoxide, an odorless and colorjless but highly toxic gas. In enclosed areas, exj
haust gases can also accumulate outside of
the vehicle. There is danger to life. Keep the exhaust pipe free and ensure sufficient ventilajtion.'

Engine
stop
Safety
information WARNING
Unattended children or animals can
cause the vehicle to move and endanger themj selves and traffic, e.g., due to the following acj
tions:'yPressing the Start/Stop button.'yReleasing the parking brake.'yOpening and closing the doors or winj
dows.'yEngaging selector lever position N.'yUsing vehicle equipment.
There is a risk of accidents or injuries. Do not leave children or animals unattended in the vej
hicle. Take the remote control with you when exiting and lock the vehicle.'

'yThe selector lever is in selector lever posij
tion D.'yThe brake pedal remains depressed while
the vehicle is stopped.'yThe driver's safety belt is buckled or the driver's door is closed.
Manual transmission:
'yNeutral is engaged and the clutch pedal is
not pressed.'yThe driver's safety belt is buckled or the driver's door is closed.
The air flow from the air conditioner is reducedwhen the engine is switched off.
Displays
in
the
instrument
cluster The READY display in the tachjometer signals that the AutoStart/Stop function is ready to
start the engine automatically.
The display indicates that the
conditions for an automatic enj
gine stop have not been met.
Functional
limitations The engine is not switched off automatically in
the following situations:
'yExternal temperature too low.'yThe external temperature is high and autoj
matic climate control is running.'yThe vehicle's interior has not yet been
heated or cooled to the required level.'yThe engine is not yet at operating temperj ature.'yThe wheels are at a sharp angle or the
steering wheel is being turned.'yAfter driving in reverse.'yFogging of the windows when the autoj matic climate control is switched on.'yVehicle battery is heavily discharged.'yAt higher elevations.'yThe engine compartment lid is unlocked.'yThe parking assistant is activated.'yStop-and-go traffic.'yUse of fuel with high ethanol content.
Starting
the
engine
The engine starts automatically under the foljlowing conditions:
'yM double-clutch transmission: by releasingthe brake pedal.'yManual transmission: 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:
'yThe driver's safety belt is unbuckled and
the driver's door is open.'yThe 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 deactij vated engine starts up automatically in the folj
lowing situations:
'yExcessive warming of the vehicle's interior
when the cooling function is switched on.'yThe steering wheel is turned.'yDouble-clutch transmission: change from
selector lever position D to N, R or D/S.'yM double-clutch transmission: acceleratj ing while simultaneously applying the
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'yFogging of the windows when the autojmatic climate control is switched on.'yVehicle battery is heavily discharged.'yExcessive cooling of the vehicle's interior
when the heating is switched on.'yLow brake vacuum pressure; this can ocj
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
Concept
To make it possible to drive off very quickly,
such as at an intersection, the automatic enj 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:
'yImmediately after the vehicle comes to a standstill, briefly press the brake pedalforcefully.'yThen press the brake pedal with normal
braking force.
Activating/deactivating
the
system
manually
Using
the
button
Press button.
'yLED comes on: Auto Start/Stop function is
deactivated.
The engine is started during an automatic engine stop.
The engine can only be stopped or started via the Start/Stop button.'yLED goes out: Auto Start/Stop function is
activated.
Switching
off
the
vehicle
during
an
automatic
engine
stop
During an automatic engine stop, the vehicle
can be switched off permanently, e.g., when
leaving it.
M double-clutch transmission:
1.Press the Start/Stop button. The ignition is switched off. The Auto Start/Stop functionis deactivated.
Selector lever position P is engaged autoj
matically.2.Set the parking brake.
Manual transmission:
1.Press the Start/Stop button. The ignition is switched off. The Auto Start/Stop functionis deactivated.2.Shift into first gear or reverse.3.Set the parking brake.
Engine start as usual via Start/Stop button.
Automatic
deactivation
In certain situations, the Auto Start/Stop funcj
tion is deactivated automatically for safety reaj sons, e.g., if no driver is detected.
Malfunction The Auto Start/Stop function no longer
switches off the engine automatically. A Check Control message is displayed. It is possible to
continue driving. Have the system checked by
a dealerss service center or another qualified
service center or repair shop.
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Parking
brake
Safety
information WARNING
An unsecured vehicle can begin to move
and possibly roll away. There is a risk of an acj
cident. Before exiting, secure the vehicle
against rolling.
In order to ensure that the vehicle is secured
against rolling away, observe the following:'ySet the parking brake.'yOn uphill grades or on a downhill slope,
turn the front wheels in the direction of the
curb.'yOn uphill grades or on a downhill slope,
also secure the vehicle, e.g., with a wheel chock.'

The turn signal flashes three times.
The function can be activated or deactivated.
On the Control Display:1."Settings"2."Lighting"3."Triple turn signal"
Settings are stored for the profile currently used.
Signaling
briefly
Press the lever to the resistance point and hold
it there for as long as you want the turn signal to flash.
Malfunction
Unusually rapid flashing of the indicator lamp
indicates that a turn signal bulb has failed.
High
beams,
headlight
flasher Push the lever forward or pull it backward.
'yHigh beams, arrow 1.'yHigh beams off/headlight flasher, arrow 2.
Washer/wiper
system
General
information
Do not use the wipers if the windshield is dry, as this may damage the wiper blades or causethem to become worn more quickly.
Safety
information
WARNING
If the wipers start moving in the folded
away state, body parts can be jammed or damj
age may occur to parts of the vehicle. There is
a risk of injury or risk of property damage. Make sure that the vehicle is switched off
when the wipers are in the folded away state
and the wipers are folded in when switching on.'