BMW 3 SERIES 2021 Owners Manual

Safety
information
Warning
Operating
materials,
for
instance
oils,
greases,
coolants,
fuels,
can
contain
harmful
ingredients.
There
is
a
risk
of
injuries
or
danger
to
life.
Fol#j
low
the
instructions
on
the
containers.
Avoid
the
contact
of
articles
of
clothing,
skin
or
eyes
with
operating
materials.
Do
not
refill
operating
materials
into
different
bottles.
Store
operating
materials
out
of
reach
of
children.
NOTICE
An
engine
oil
level
that
is
too
low
causes
en#j
gine
damage.
There
is
a
risk
of
damage
to
property.
Immediately
add
engine
oil.
NOTICE
Too
much
engine
oil
can
damage
the
engine
or
the
catalytic
converter.
There
is
a
risk
of
dam#j
age
to
property.
Do
not
add
too
much
engine
oil.
When
too
much
engine
oil
is
added,
have the
engine
oil
level
corrected
by
a
dealer#ss
serv#jice
center
or
another
qualified
service
center
or
repair
shop.
Overview
The
oil
filler
neck
is
located
in
the
engine
com#j
partment.
Additional
information:
For
an
overview,
refer
to
page
345.
Adding
engine
oil
1.Opening
the
hood.Opening,
refer
to
page
346.2.Open
the
lid
counterclockwise.3.Add
engine
oil.4.Close
the
lid.
Engine
oil
types
to
add
General
information
The
engine
oil
quality
is
critical
for
the
life
of
the
engine.
Only
add
the
types
of
engine
oil
which
are
listed.
Safety
information
NOTICE
Oil
additives
can
damage
the
engine.
There
is
a risk
of
damage
to
property.
Do
not
use
oil
addi#j tives.
NOTICE
Incorrect
engine
oil
can
cause
malfunctions
in the
engine
or
damage
it.
There
is
a
risk
of
dam#j age
to
property.
When
selecting
an
engine
oil,
make
sure
that
the
engine
oil
has
the
correct
oil rating.
Suitable
engine
oil
types
Add
engine
oils
that
meet
the
following
oil
rating
standards:
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351Operating
materialsMOBILITY351
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Edition
for
Part
no.
01405A1EBF2
-
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Gasoline
engineBMW
Longlife-01
FE.BMW
Longlife-14
FE+.BMW
Longlife-17
FE+.
Alternative
engine
oil
typesIf
an
engine
oil
suitable
for
continuous
use
is
not
available,
up
to
1
US
quart/liter
of
an
engine
oil with
the
following
oil
rating
can
be
added:
Oil
ratingAPI
SL.API
SM.API
SN.
Viscosity
grades
Viscosity
gradesSAE
0W-20.SAE
0W-30.
More
information
about
suitable
oil
ratings
andviscosity
grades
of
engine
oils
can
be
requested
from
a
dealer#ss
service
center
or
another
quali#j
fied
service
center
or
repair
shop.
Engine
oil
change
NOTICE
Engine
oil
that
is
not
changed
in
timely
fashion
can
cause
increased
engine
wear
and
thus
en#j
gine
damage.
There
is
a
risk
of
damage
to
property.
It
is
recommended
that
you
do
not exceed
the
service
intervals
indicated
in
the
ve#j
hicle.
The
vehicle
manufacturer
recommends
that
you
have
a
dealer's
service
center
or
another
quali#j
fied
service
center
or
repair
shop
change
the
en#j
gine
oil.
Coolant
General
information
Coolant
consists
of
water
and
additives.
Not
all
commercially
available
additives
are
suita#j
ble
for
the
vehicle.
Do
not
mix
additives
of
differ#j
ent
colors.
Observe
the
water
-
additive
mixing ratio
of
50:50.
Information
about
suitable
addi#j
tives
is
available
from
a
dealer#ss
service
center
or
another
qualified
service
center
or
repair
shop.
Safety
information
Warning
With
the
engine
hot
and
the
cooling
system open,
coolant
can
escape
and
lead
to
scalding.
There
is
a
risk
of
injury.
Only
open
the
cooling
system
with
the
engine
cooled
down.
Warning
Additives
are
harmful
and
incorrect
additives
can
damage
the
engine.
There
is
a
risk
of
injury
and
risk
of
damage
to
property.
Do
not
allow
additives
to
come
into
contact
with
skin,
eyes or
articles
of
clothing.
Use
suitable
additives
only.
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materials352
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Coolant
level
General
information Depending
on
the
motorization,
there
are
up
totwo
coolant
reservoirs
in
the
engine
compart#j
ment.
Check
and
top
up
the
coolant
levels
on
a
regular
basis.
The
coolant
level
is
indicated
using
the
Max
mark in
the
filler
neck
of
the
coolant
reservoir.
Additional
information:
For
an
overview,
refer
to
page
345.
Checking
the
coolant
level1.Let
the
engine
cool.2.Opening
the
hood.
Opening,
refer
to
page
346.3.Turn
the
lid
of
the
coolant
reservoir
slightly
counterclockwise
to
allow
any
excess
pres#j
sure
to
dissipate,
then
open
it.4.Open
the
coolant
reservoir
lid.5.The
coolant
level
is
correct
when
it
is
just
be#j low
the
maximum
mark
in
the
filler
neck.6.Close
the
lid.
Adding
coolant
1.Let
the
engine
cool.2.Opening
the
hood.
Opening,
refer
to
page
346.3.Turn
the
lid
of
the
coolant
reservoir
slightly
counterclockwise
to
allow
any
excess
pres#j
sure
to
dissipate,
then
open
it.4.Open
the
coolant
reservoir
lid.5.If
the
coolant
is
low,
slowly
add
coolant
up
to
the
specified
level;
do
not
overfill.6.Close
the
lid.7.Have
the
cause
of
the
coolant
loss
eliminated as
soon
as
possible.
Disposal
Comply
with
the
relevant
environmental
protection
regulations
when
disposing
of coolant
and
coolant
additives.
Washer
fluid
General
information All
washer
nozzles
are
supplied
from
one
reser#j
voir.
Use
a
mixture
of
tap
water
and
windshield washer
concentrate.
If
desired,
a
windshield
washer
concentrate
containing
antifreeze
can
be
used.
Recommended
minimum
fill
quantity:
0.2
US
gal/1
liter.
Safety
information
Warning
Some
antifreeze
agents
can
contain
harmful substances
and
are
flammable.
There
is
a
riskof
fire
and
a
risk
of
injury.
Follow
the
instruc#j
tions
on
the
containers.
Keep
antifreeze
away from
ignition
sources.
Do
not
refill
operating
materials
into
different
bottles.
Store
operating
materials
out
of
reach
of
children.
United
States:
the
washer
fluid
mixture
ratio
is
regulated
by
the
U.S.
EPA
and
many
individual states;
do
not
exceed
the
allowable
washer
fluid
dilution
ratio
limits
that
apply.
Follow
the
usage
instructions
on
the
washer
fluid
container.
Use
of
BMW#ss
Windshield
Washer
Concentrate
or
the
equivalent
is
recommended.
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353Operating
materialsMOBILITY353
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for
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no.
01405A1EBF2
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Warning
Washer
fluid
can
ignite
and
catch
fire
on
con#j
tact
with
hot
engine
parts.
There
is
a
risk
of
in#j
jury
or
risk
of
damage
to
property.
Only
add
washer
fluid
when
the
engine
is
cooled
down.
Next,
fully
close
the
lid
of
the
washer
fluid
res#j
ervoir.
NOTICE
Silicon-containing
additives
in
the
washer
fluid
for
the
water-repelling
effect
on
the
windows
can
lead
to
damage
to
the
washing
system.
There
is
a
risk
of
damage
to
property.
Do
not add
silicon-containing
additives
to
the
washerfluid.
NOTICE
Mixing
different
windshield
washer
concen#j trates
or
antifreeze
can
damage
the
washing
system.
There
is
a
risk
of
damage
to
property.
Do
not
mix
different
windshield
washer
concen#j trates
or
antifreeze.
Follow
the
information
and
mixing
ratios
provided
on
the
containers.
Overview
The
washer
fluid
reservoir
is
located
in
the
en#j
gine
compartment.
Malfunction
The
use
of
undiluted
windshield
washer
concen#j trate
or
alcohol-based
antifreeze
can
lead
to
in#jcorrect
readings
at
temperatures
below
+5
#

MaintenanceVehicle
features
andoptions
This
chapter
describes
all
standard,
country-spe#jcific
and
optional
features
offered
with
the
series. It
also
describes
features
and
functions
that
are
not
necessarily
available
in
your
vehicle,
e.g.,
due to
the
selected
options
or
country
versions.
Thisalso
applies
to
safety-related
functions
and
sys#j
tems.
When
using
these
functions
and
systems,
the
applicable
laws
and
regulations
must
be
ob#j
served.
BMW
maintenance
system
The
maintenance
system
provides
service
notifi#j
cations
and
thereby
provides
support
in
main#j
taining
road
safety
and
the
operational
reliability of
the
vehicle.
In
some
cases,
scopes
and
intervals
of
the
main#j
tenance
system
may
vary
according
to
the
coun#j
try
version.
Replacement
work,
spare
parts,
fuels
and
lubricants,
and
wear
materials
are
calculated
separately.
Further
information
is
available
from
a
dealer's
service
center
or
another
qualified
serv#j
ice
center
or
repair
shop.
Condition
Based
ServiceCBS
Concept
Sensors
and
special
algorithms
take
into
account
the
driving
conditions
of
the
vehicle.
CBS
uses
these
to
provide
maintenance
recommendations.
The
system
makes
it
possible
to
adapt
theamount
of
maintenance
corresponding
to
your
user
profile.
General
information
Information
on
service
notifications
can
be
dis#j
played
on
the
Control
Display.
Additional
information:
Service
notifications,
refer
to
page
162.
Service
data
in
the
vehicle
key
Information
on
the
service
notifications
is
contin#j
uously
stored
in
the
vehicle
key.
The
service center
can
read
this
data
out
and
suggest
amaintenance
scope
for
the
vehicle.
Therefore,
hand
the
service
advisor
the
vehicle
key
with
which
the
vehicle
was
driven
most
re#j cently.
Storage
periods
Storage
periods
during
which
the
vehicle
battery
was
disconnected
are
not
taken
into
account.
If
this
occurs,
have
a
dealer's
service
center
or
another
qualified
service
center
or
repair
shop
update
the
time-dependent
maintenance
proce#j dures,
such
as
checking
brake
fluid
and,
if
neces#j
sary,
changing
the
engine
oil
and
the
microfilter/
activated-charcoal
filter.
Maintenance
Manual
and Service
and
WarrantyInformation
Booklet
for
USmodels
and
Warranty
and Service
Guide
Booklet
forCanadian
models
Please
consult
your
Maintenance
Manual
and
Service
and
Warranty
Information
Booklet
for
US models
and
Warranty
and
Service
Guide
Booklet
for
Canadian
models
for
additional
information
on
Seite
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the
performance
of
service
and
maintenancework.
The
manufacturer
of
your
vehicle
recommends
that
maintenance
and
repair
be
performed
by
a service
center
or
another
qualified
service
centeror
repair
shop.
Records
of
regular
maintenanceand
repair
work
should
be
retained.
Socket
for
OBD
Onboard Diagnosis
General
information Devices
connected
to
the
OBD
socket
triggerthe
alarm
system
when
the
vehicle
is
locked.
Re#jmove
any
devices
connected
at
the
OBD
socket
before
locking
the
vehicle.
Safety
information
NOTICE
The
socket
for
Onboard
Diagnosis
is
an
intri#j
cate
component
intended
to
be
used
in
con#j
junction
with
specialized
equipment
to
check
the
vehicle#ss
primary
emissions
system.
Im#j
proper
use
of
the
socket
for
Onboard
Diagno#j
sis,
or
contact
with
the
socket
for
Onboard
Di#j
agnosis
for
other
than
its
intended
purpose,
can
cause
vehicle
malfunctions
and
creates
risks
of
personal
and
property
damage.
Given
the
foregoing,
the
manufacture
of
your
vehicle
strongly
recommends
that
access
to
the
socket
for
Onboard
Diagnosis
be
limited
to
a
dealer's
service
center
or
another
qualified
service
cen#j
ter
or
repair
shop
or
other
persons
that
have
the
specialized
training
and
equipment
for
pur#j
poses
of
properly
utilizing
the
socket
for
On#j
board
Diagnosis.
Position
There
is
an
OBD
socket
on
the
driver's
side
for checking
the
primary
components
in
the
vehi#j
cle's
emissions.
Emissions
'xThe
warning
light
lights
up:
Emissions
are
deteriorating.
Have
the vehicle
checked
as
soon
as
possible.'xThe
warning
light
flashes
under
certain
cir#j
cumstances:
This
indicates
that
there
is
excessive
misfiring in
the
engine.
Reduce
the
vehicle
speed
and
have
the
sys#j
tem
checked
immediately;
otherwise,
serious
engine
misfiring
within
a
brief
period
can
seri#j
ously
damage
emission
control
components, in
particular
the
catalytic
converter.Seite
356MOBILITYMaintenance356
Online
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for
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no.
01405A1EBF2
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Replacing
componentsVehicle
features
andoptions
This
chapter
describes
all
standard,
country-spe#jcific
and
optional
features
offered
with
the
series. It
also
describes
features
and
functions
that
are
not
necessarily
available
in
your
vehicle,
e.g.,
due to
the
selected
options
or
country
versions.
Thisalso
applies
to
safety-related
functions
and
sys#j
tems.
When
using
these
functions
and
systems,
the
applicable
laws
and
regulations
must
be
ob#j
served.
Vehicle
tool
kit
The
onboard
vehicle
tool
kit
is
located
in
the
left storage
compartment
of
the
cargo
area
under
a
cover.
Wiper
blades
Safety
information
NOTICE
The
window
may
sustain
damage
if
the
wiper
falls
onto
it
without
the
wiper
blade
installed.
There
is
a
risk
of
damage
to
property.
Hold
the
wiper
firmly
when
changing
the
wiper
blade.
Do
not
fold
or
switch
on
the
wiper
without
a
wiper blade
installed.
NOTICE
Folded-away
wipers
can
be
jammed
when
the hood
is
opened.
There
is
a
risk
of
damage
to
property.
Make
sure
that
the
wipers
with
the wiper
blades
mounted
are
folded
down
onto
the
windshield
before
opening
the
hood.
Replacing
1.To
change
the
wiper
blades,
fold
up
the
wiper
arms.
Fold-away
position
of
the
wipers,
refer
to page
141.2.Fold
up
and
hold
the
wiper
arm
firmly.3.Squeeze
the
retainer
spring,
arrow
1,
and
fold
up
the
wiper
blade,
arrow
2.4.Remove
the
wiper
blade
forward
from
thecatch.5.Insert
the
new
wiper
blade
in
reverse
order
of
removal
until
it
locks
in
place.6.Fold
down
the
wipers.Seite
357Replacing
componentsMOBILITY357
Online
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for
Part
no.
01405A1EBF2
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Lights
and
bulbs
General
informationLights
and
bulbs
make
an
essential
contribution
to
vehicle
safety.
All
headlights
and
lights
are
made
using
LED
or
laser
technology.
Some
items
of
equipment
use
light-emitting
di#j odes
installed
behind
a
cover
as
a
light
source.
These
light-emitting
diodes
are
related
to
con#j
ventional
lasers
and
are
officially
designated
as
Class
1
light-emitting
diodes.
The
manufacturer
of
the
vehicle
recommends
that
you
let
a
dealer's
service
center
or
another
qualified
service
center
or
repair
shop
perform
the
work
in
case
of
a
malfunction.
Safety
information
Warning
Focused
laser
light
can
irritate
or
permanently damage
the
retina
of
the
eye.
There
is
a
risk
of injury.
The
manufacturer
of
the
vehicle
recom#j
mends
that
the
work
on
the
lighting
system
in#j cluding
bulb
replacement
be
performed
by
adealer#ss
service
center
or
another
qualified
service
center
or
repair
shop.
Warning
Intensive
brightness
can
irritate
or
damage
the
retina
of
the
eye.
There
is
a
risk
of
injury.
Do
not look
directly
into
the
headlights
or
other
light
sources.
Do
not
remove
the
LED
covers.
Headlight
glass
Condensation
can
form
on
the
inside
of
the
headlight
glass
in
cool
or
humid
weather.
When
driving
with
the
lights
switched
on,
the
conden#j
sation
evaporates
after
a
short
time.
The
head#j light
glass
does
not
need
to
be
changed.
If
despite
driving
with
the
headlights
switched
on,
increasing
humidity
forms,
for
instance
water
droplets
in
the
light,
have
the
headlights
checked.
Vehicle
battery
General
information The
battery
is
maintenance-free.
More
information
about
the
battery
can
be
re#j
quested
from
a
dealer's
service
center
or
another
qualified
service
center
or
repair
shop.
Safety
information
DANGER
Contact
with
live
components
can
lead
to
an electric
shock.
There
is
a
risk
of
injuries
or
dan#j
ger
to
life.
Do
not
touch
any
components
that
are
under
voltage.
Warning
Vehicle
batteries
that
are
not
compatible
can
damage
vehicle
systems
and
impair
vehicle
functions.
There
is
a
risk
of
an
accident
and
damage
to
property.
Only
vehicle
batteries
that are
compatible
with
your
vehicle
type
should
beinstalled
in
your
vehicle.
Information
on
com#j
patible
vehicle
batteries
is
available
at
your
dealer#ss
service
center.
Register
the
battery
to
the
vehicle
The
manufacturer
of
the
vehicle
recommendsthat
you
have
a
service
center
or
another
quali#j fied
service
center
or
repair
shop
register
the
ve#jhicle
battery
to
the
vehicle
after
the
battery
hasbeen
replaced.
Once
the
battery
has
been
regis#jtered
again,
all
comfort
features
will
be
availablewithout
restriction
and
any
Check
Control
mes#j
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sages
displayed
which
relate
to
comfort
features
will
disappear.
Charging
the
battery
General
information Make
sure
that
the
battery
is
always
sufficiently
charged
to
guarantee
that
the
battery
remains
usable
for
its
full
service
life.
A
discharged
battery
is
indicated
by
a
red
indicator
light.
Charge
the
battery
when
acceleration
is
insuffi#j cient.
The
following
circumstances
can
have
a
negative effect
on
the
performance
of
the
battery:'xFrequent
short-distance
drives.'xThe
vehicle
is
not
used
for
more
than
a
month.
Safety
information
NOTICE
Battery
chargers
for
the
vehicle
battery
can
work
with
high
voltages
and
currents,
which
means
that
the
12
volt
electrical
system
can
be
overloaded
or
damaged.
There
is
a
risk
of
dam#j age
to
property.
Only
connect
battery
chargers
for
the
vehicle
battery
to
the
starting
aid
termi#j nals
in
the
engine
compartment.
Charging
the
battery
Charge
the
battery
only
when
the
engine
is
off
and
via
the
starting
aid
terminals
in
the
engine
compartment.
With
Mild
Hybrid
technology:
charge
the
battery
only
when
the
hood
is
opened.
Additional
information:
Starting
aid
terminals,
refer
to
page
365.
Power
failure
After
a
power
loss,
some
equipment
needs
to
be
newly
initialized
or
individual
settings
updated,
for example:'xWith
Memory
function:
store
the
positions
again.'xTime:
update.'xDate:
update.'xGlass
sunroof:
initialize
the
system.
Mild
Hybrid
technology
Concept
Part
of
the
Mild
Hybrid
technology
is
a
battery
that
works
with
a
voltage
of
48
volts.
Mild
Hybrid
technology
can
lower
the
fuel
consumption.
Mild
Hybrid
technology
influences
the
following
functions.
Additional
information:
'xAuto
Start/Stop
function,
refer
to
page
130.'xEngine-Off
Coasting,
refer
to
page
309.
Safety
information
DANGER
Contact
with
live
components
can
lead
to
an electric
shock.
There
is
a
risk
of
injuries
or
dan#j
ger
to
life.
Do
not
touch
any
components
that
are
under
voltage.
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Overview
The
battery
for
the
Mild-Hybrid
technology
is
lo#j
cated
under
a
cover
in
the
engine
compartment on
the
front
passenger
side.
Removing
the
cover
1.Turn
lid
up
to
the
opened
lock
symbol



arrow
1.2.Remove
cover,
arrow
2.
Information
A
purple
cable
leads
from
the
battery
to
the
cen#j ter
of
the
vehicle.
Do
not
replace
or
work
on
the
battery
for
the Mild
Hybrid
technology.
Disposing
of
old
batteries Have
old
batteries
disposed
of
by
a
deal#jer#ss
service
center
or
another
qualifiedservice
center
or
repair
shop
or
take
them
to
a
collection
point.
Maintain
the
filled
battery
in
an
upright
position for
transport
and
storage.
Secure
the
battery
so
that
it
does
not
tip
over
during
transport.
Fuses
General
information
The
fuses
are
located
at
different
places
in
the
vehicle.
Safety
information
Warning
Incorrect
and
repaired
fuses
can
overload
elec#j
trical
lines
and
components.
There
is
a
risk
of
fire.
Never
attempt
to
repair
a
blown
fuse.
Do
not
replace
a
nonworking
fuse
with
a
substitute of
another
color
or
amperage
rating.
In
the
car's
interior
The
fuses
are
located
in
the
car's
interior
in
the
front
passenger
floor
area
behind
a
cover.
Loosen
fasteners,
arrows,
and
open
cover.
The
fuse
box
is
located
on
the
front
right.
In
the
cargo
area
The
fuses
are
located
in
the
cargo
area
on
the
right
side
behind
a
cover.
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