2005 BMW Z4 ROADSTER 2.5I air filter

Reference
At a glance
Controls
Driving tips
Mobility
59
Air distribution
You can direct airflow onto the win-
dows , toward the upper body
and into the footwell . All interme-
diate settings are possible.
Air supply/blower
Turn the rotary control to adjust the
air supply. Both heating and ventila-
tion become more effective as the air
supply rate is increased.
Turn the rotary control toward zero:
The blower and the heating are turned off, and
the air supply is stopped.
Temperature
In order to increase the temperature
of the passenger compartment, turn
to the right toward the red zone.
Air conditioning
The air is cooled and dehumidified
and, depending on the temperature
setting, rewarmed.
Depending on the weather, the wind-
shield may fog over briefly when the engine is
started.
Condensation forms during operation of
the air conditioning system, which then
exits under the vehicle. Traces of condensed
water on the ground underneath the vehicle are
thus normal.<
Outside air/recirculated air mode
If there are unpleasant odors in the
outside air, you can temporarily block
the supply of incoming air. The sys-
tem then recirculates the air currently
within the vehicle.
If the windows fog over in the recirculated
air mode, switch this mode off and
increase the air supply as required. Do not use
the recirculated-air mode continuously over a
long period of time as this would otherwise
reduce the air quality in the interior of the vehi-
cle.<
Rear window defroster
The indicator lamp lights up when
the rear window defroster is active.
The rear window defroster switches
off automatically.
Ventilation
You can adjust the blower controls for the upper
body area to obtain the optimum airflow rates
and directions for your personal requirements:
1Rotary dials for opening and closing the
vents at any setting desired
2Slide for adjusting airflow direction
Microfilter
The built-in microfilter removes dust and pollen
from the incoming air and in the recirculated air
mode. Your BMW center will replace this filter
during the regularly scheduled maintenance. A
substantial reduction in airflow indicates that
the filter needs to be replaced earlier.

Reference
At a glance
Controls
Driving tips
Mobility
63
By repeatedly pressing the button, you can
select one of three different operating modes.
>Indicator lamps off: outside air flows into the
vehicle
>Left-hand indicator lamp on, AUC mode:
the system detects pollutants in the outside
air and responds by deactivating the out-
side airflow as required. The system then
recirculates the air currently within the vehi-
cle. Depending on air quality requirements,
the system automatically switches between
outside air supply and recirculation of the air
already within the vehicle
>Right-hand indicator lamp on: the flow of
outside air is permanently blocked. The
system recirculates the air already within
the vehicle.
If the windows fog over in the recirculated
air mode, switch this mode off and
increase the air supply as required. Do not use
the recirculated-air mode continuously over a
long period of time as this would otherwise
reduce the air quality in the interior of the vehi-
cle.<
Rear window defroster
The indicator lamp lights up when
the rear window defroster is active.
The rear window defroster switches
off automatically.
Ventilation
You can adjust the blower controls for the upper
body area to obtain the optimum airflow rates
and directions for your personal requirements:1Rotary dials for opening and closing the
vents at any setting desired
2Slide for adjusting airflow direction
Microfilter/activated-charcoal filter
The built-in microfilter removes dust and pollen
from the incoming air. The activated-charcoal
filter provides additional protection by filtering
gaseous pollutants from the outside air. Your
BMW center replaces this combined filter as a
standard part of your scheduled maintenance.
A substantial reduction in airflow indicates that
the filter needs to be replaced earlier.

Everything from A to Z
106
A
ABS Antilock Brake
System50
– indicator lamp13
Acceleration assistant42
Accessories, refer to
– For your own safety6
– Your individual vehicle5
Accident, refer to Emergency
call96
Acknowledgment signal for
vehicle locking/unlocking16
Activated-charcoal filter63
Adjusting the thigh support29
Air, drying,
refer to Air conditioning
mode59,62
Airbags53
– deactivation33
– indicator lamp12
– passenger airbags indicator
lamp34
– reactivation33
– safe seating position27
Airbag switch33
Air conditioning58
Air conditioning mode
– air conditioning59
– automatic climate control62
Air conditioning mode
switching on/off
manually59,62
Air distribution
– air conditioning59
– automatic climate control62
Airing out, refer to
Ventilation59,63
Air outlets,
refer to Ventilation59,63
Air pressure, refer to Tire
inflation pressure78Air recirculation, refer to
Recirculated air
mode59,62
Air supply/blower
– air conditioning59
– automatic climate control62
AKI, refer to Fuel
specifications76
Alarm system25
– avoiding unintentional
alarms26
All-season tires, refer to
Winter tires81
Antenna, refer to the
Caring for your vehicle
brochure
Antifreeze86,87
– coolant87
– washing fluids86
Antilock Brake System
ABS50
– indicator lamp13
Anti-theft alarm system, refer
to Alarm system25
Anti-theft protection16,25
Approved axle load, refer to
Weights103
Approved engine oils87
Approved gross vehicle
weight, refer to Weights103
Artificial leather, refer to the
Caring for your vehicle
brochure
Ashtray65
Assistant systems,
refer to Dynamic Stability
Control DSC50
AUC Automatic recirculated
air control62Automatic
– air distribution62
– air supply/blower62
– cruise control44
– headlamp control56
– luggage compartment lid
operation19
Automatically dimming
interior rearview mirror31
Automatic car wash, refer to
the Caring for your vehicle
brochure
Automatic climate control61
Automatic recirculated air
control AUC62
Automatic transmission with
Steptronic38
– ignition36
– indicator lamp13
– interlock36
– selector lever lock38
– shiftlock38
– towing the vehicle99
– tow-starting99
AUTO program,
refer to Automatic air
distribution62
Average fuel consumption49
– setting unit of measure48
Average speed49
– setting unit of measure48
Avoiding unintentional
alarms26
Axle loads, refer to
Weights103
B
Backrest, refer to Seat
adjustment28
Backup lamps38
– bulb replacement93
Everything from A to Z
Index

Reference
At a glance
Controls
Driving tips
Mobility
109
Dry air, refer to Air
conditioning mode59,62
DSC Dynamic Stability
Control50
– indicator lamp13,51
DTC Dynamic Traction
Control50
– indicator lamp13,51
Dynamic Brake Control
DBC50
– indicator lamp13
– warning lamp51
Dynamic Stability Control
DSC50
– indicator lamp13,51
Dynamic Traction Control
DTC50
– indicator lamp13,51
E
Electrical fault
– automatic transmission with
Steptronic39
– convertible top23
– door lock18
– driver's door18
– fuel filler door76
– luggage compartment lid18
– SMG41
– storage compartments64
Electric Power Steering
EPS42
– indicator lamp13,42
Electric power windows20
– power loss20
Electronic Stability Program
ESP, refer to
Dynamic Stability Control
DSC50
Electronic transmission
control module39
Emergency call96Emergency operation, refer to
Manual operation
– convertible top23
– doors18
– driver's door18
– fuel filler door76
– luggage compartment lid18
– storage compartments64
Emergency service, refer to
Mobile Service96
Engine36
– break-in procedures68
– data102
– electronics13
– indicator lamp13
– speed46
– starting36
– switching off37
Engine compartment85
Engine coolant87
Engine coolant temperature
gauge46
Engine data102
Engine oil86
– alternative oils87
– approved engine oils87
– capacity105
– indicator/warning lamp13
Engine oil level86
– indicator/warning lamp13
Engine oil pressure86
– indicator/warning lamp13
Engine oil sensor86
– indicator/warning lamp
13
Engine output, refer to Engine
data102
Engine speed, refer to Engine
data102
EPS Electric Power
Steering42
ESP Electronic Stability
Program, refer to Dynamic
Stability Control DSC50
Exhaust system, refer to Hot
exhaust system69
Exterior mirrors31
– automatic dimming
feature70
– folding in and out31Eyelets, towing and tow-
starting98
F
False alarm, refer to
– Avoiding unintentional
alarms26
– Stopping the alarm26
Fasten safety belts
– refer to Safety belts30
– warning lamp12,30
Fault
– automatic transmission39
– luggage compartment lid18
– SMG41
Filter, refer to
– Microfilter59
– Microfilter/activated-
charcoal filter63
Fine wood, refer to the
Caring for your vehicle
brochure
Finger guard system, power
windows20
First aid, refer to First-aid
kit97
First-aid kit97
Flat
– Run Flat tires82
Flat tire
– Flat Tire Monitor52
– indicator/warning lamp13
– Run Flat tires82
Flat tire, refer to
– Changing a wheel94
– Tire condition81
Flat Tire Monitor52
– indicator/warning
lamp13,53
– initializing52
– warning lamp53
Flat tire service, refer to
Mobile Service96
Floods, refer to Driving
through water69
Floor covers, carpets, refer to
the Caring for your vehicle
brochure

Everything from A to Z
112 Manual mode, refer to
Automatic transmission with
Steptronic39
Manual operation
– automatic transmission
interlock38
– door lock18
– driver's door18
– fuel filler door76
– luggage compartment lid18
– power convertible top23
– storage compartments64
Manual transmission38
Manufacturer5
Master key16
– with remote control16
Maximum cooling62
Maximum speed, winter
tires82
MD operation, refer to
Owner's Manual for Radio/
Onboard Computer
Measurements, refer to
Dimensions104
Mechanical seat28
Memory, refer to
– Seat Memory29
– Vehicle Memory, Key
Memory31
Microfilter
– air conditioning59
– automatic climate control63
Microphone, refer to
Preparations for the cellular
phone65
Minidisc operation, refer to
Owner's Manual for Radio/
Onboard Computer
Mirrors31
– heated31
Mobile phone, refer to the
separate Owner's Manual5
Mobile Service96
Modifications, technical, refer
to For your own safety6
Monitoring system for tire
pressures, refer to
– Tire inflation pressure78
M Sports seat29Multifunction steering wheel,
refer to Buttons in the
steering wheel10
Multifunction switch
– turn signal indicators/
headlamp flasher42
– washer/wiper system43
N
Neck supports, refer to Head
restraints28
Nets64
Nylon rope, refer to Towing
and tow-starting99
O
OBD interface socket90
Octane numbers, refer to Fuel
specifications76
Odometer46
Oil, refer to Engine oil
– additives, refer to Approved
oils87
– alternative oils87
– approved oils87
– capacity105
– dipstick86
– indicator/warning lamp13
Oil change intervals,
refer to the Service and
Warranty Information
Booklet for US models,
Warranty and Service Guide
Booklet for Canadian
models
Oil consumption86
Oil filter change105
Oil level86
– checking86
– indicator lamp13
Oil pressure86
– indicator/warning lamp13
Oil sensor86
– indicator lamp13
Oil service47
Oil types87Onboard computer
– button BC48
Onboard computer, refer to
Computer or to the Owner's
Manual for Onboard
Computer
Onboard monitor, refer to
Computer or to the Owner's
Manual for Onboard
Computer
Onboard tool kit91
Opening and closing the
vehicle
– at the door lock17
– from inside18
– from outside16,17
– with the remote
control16,17
Operating elements10
Outlets, refer to
Ventilation59,63
Outside air mode59
– air conditioning59
Outside air mode, automatic
climate control62
Outside temperature
display47
– changing units of
measure48
– in the onboard computer48
P
Paintwork, refer to the Caring
for your vehicle brochure
Parking brake37
– indicator lamp13
Parking lamps/Low beams56
Parking lock, refer to
Parking39
Parts and accessories,
refer to Your individual
vehicle5
Passenger airbags
– deactivation33
– reactivation33
Placing the vehicle in storage,
refer to the Caring for your
vehicle brochure

Reference
At a glance
Controls
Driving tips
Mobility
113
Plastic, refer to the Caring for
your vehicle brochure
Pollen, refer to
– Microfilter59
– Microfilter/activated-
charcoal filter63
Power convertible top21
Power loss
– electric power windows20
Power output, refer to Engine
data102
Power seat29
Power socket65
Power steering, electric42
Power supply interruption
– battery95
Power windows
– initializing20
Power windows protective
function, refer to Trap
protection20
Preparations for the cellular
phone65
Pressure, tires78
Pressure monitoring, tires,
refer to Flat Tire Monitor52
R
Radio, refer to the Owner's
Manual for Radio
Radio navigation, refer to the
separate Owner's Manual
Radio remote control key,
refer to Master keys with
remote control16
Rain sensor43
Reading lamps57
Rear lamps
– bulb replacement93
– indicator lamp, defective
lamp13
Rearview mirror31
Rear window defroster
– air conditioning59
– automatic climate control63
Recirculated air mode
– air conditioning59
– automatic climate control62Recirculating the air, refer to
Recirculated air
mode59,62
Reclining seat, refer to
Seats28
Refueling76
– fuel filler door76
Releasing
– hood84
Remaining distance, refer to
Range49
Remaining distance to next
service47
Remote control16
– luggage compartment lid17
– malfunction17
Replacement key16
Replacement key, refer to
New keys16
Replacement of tires82
– changing a wheel94
– new wheels and tires82
Replacing lamps, refer to
Lamps and bulbs91
Restraint systems
– for children35
– refer to Safety belts30
Reverse
– automatic transmission with
Steptronic39
– manual transmission38
Reverse gear
– sequential manual gearbox
SMG40
Rod antenna, refer to the
Caring for your vehicle
brochure
Rope, refer to Towing and
tow-starting98
RSC Runflat System
Component, refer to Run
Flat tires82
Rubber parts, refer to the
Caring for your vehicle
brochure
Runflat System Component
RSC, refer to Run Flat
tires
82Run Flat tires82
– changing a tire81,82
– changing a wheel94
– flat tire53
– tire inflation pressure78
– winter tires82
S
Safe seating position27
– with airbags27
– with safety belts27
Safety belts30
– care, refer to the Caring for
your vehicle brochure
– safe seating position27
– warning lamp12,30
Safety systems, refer to
– Airbags53
– Antilock Brake System
ABS50
– Dynamic Stability Control
DSC50
Safety tires, refer to Run Flat
tires82
Screwdriver, refer to Onboard
tool kit91
Seat adjustment28
– mechanical28
– M Sports seat29
– power29
Seat heating30
Seat memory29
Seat position, storing29
Seats28
– adjusting the sports seat29
– heating30
– memory, refer to Seat
memory29
– power adjustment29
– safe seating position27
– storing positions29
Securing, locking the vehicle
– from inside18
– from outside17
Securing loads,
refer to Cargo loading71