air filter BMW Z4 2.5I 2003 Owners Manual

Controlling the climate for pleasant driving
56
Air distribution
You can direct airflow onto the
windows , toward the upper
body and into the footwell .
All intermediate settings are pos-
sible.
Air supply/blower
You can set the blower to 8 differ-
ent levels. Both heating and ven-
tilation become more effective as
the air supply rate is increased.
Temperature
In order to increase the tempera-
ture of the passenger compart-
ment, turn to the right – red zone.
Air conditioning
The air is cooled and dehumidi-
fied and – depending on the tem-
perature setting – rewarmed.
Depending on the weather, the
windshield 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 con-
densed 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 tempo-
rarily block the supply of incom-
ing air. The system then recircu-
lates the air currently within the vehicle.
If the windows fog over in the recircu-
lated air mode, switch this mode off
and increase the air supply as required.<
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 air-
flow rates and directions for your personal
requirements:
1Rotary dials for opening and closing the
vents at any setting desired
2Lever for adjusting airflow direction
Particle filter
The built-in particle filter 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.
To defrost windows and remove
condensation
1Turn the rotary control to
2Turn the rotary blower control for the air
supply completely to the right
3Turn the rotary temperature control
completely to the right
4To defrost the rear window, switch on
the rear window defroster

At a glance
Controls
Driving tips
Mobility
Reference
59
>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 deacti-
vating the outside airflow as required.
The system then recirculates the air
currently within the vehicle. Depending
on air quality requirements, the system
automatically switches between out-
side 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 recir-
culated air mode, switch this mode
off and increase the air supply as re-
quired.<
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 air-
flow rates and directions for your personal
requirements:
1Rotary dials for opening and closing the
vents at any setting desired
2Lever 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 protec-
tion by filtering gaseous pollutants from the
outside air. Your BMW center will replace
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.

At a glance
Controls
Driving tips
Mobility
Reference
97
A
ABS Antilock Brake
System 53
– indicator lamp 14
Accessories 7
Activated-charcoal filter 59
Air conditioning 55, 56
– air distribution 56
– air supply 56
– automatic climate
control 58
– defrosting windows
and removing
condensation 56
– outside-air mode 56
– rear window defroster 56
– recirculated-air mode 56
– temperature 56
Air distribution
– air conditioning 56
– automatic climate
control 58
Air outlets 56, 59
Air pressure 71
– checking 71
Air supply
– air conditioning 56
– automatic climate
control 58
Airbags 33
– activation/deactivation 34
– indicator lamp 14, 33
– passenger airbags
lamp 35
Alarm system 27
– arming/disarming 27
– indicator lamp 27
– tilt alarm sensor 28
– triggering 19
All-season tires, refer to
Winter tires 76
Antifreeze
– coolant 81
– washer fluid 79Antilock Brake System ABS
– indicator lamp 14
Anti-theft alarm system,
refer to Alarm system 27
Approved axle load 94
Approved gross vehicle
weight 94
Ashtray 61
AUC Automatic recircu-
lated air control 58
Automatic
– air distribution 58
– air supply 58
– cruise control 44
– lamp control 45
Automatic car wash, refer
to the Caring for your
vehicle brochure
Automatic climate
control 57, 58
– air conditioning 58
– air distribution 58
– air supply 58
– Automatic recirculated air
control AUC 58
– defrosting windows
and removing
condensation 58
– maximum cooling 58
– outside air 58
– rear window defroster 59
– recirculated air mode 58
– temperature 58
Automatic transmission
with Steptronic 40
– display 41
– electronic transmission
control 41
– indicator lamp 14
– manual mode 41
– selector lever position 40
– sport program 41
Automatic windshield
washer 44Average fuel
consumption 50
Average speed 50
Axle load, approved 94
B
Backrest, refer to Seats 30
Backup lamps 40
– bulb replacement 86
Bandages 89
Battery 87
Battery charge current
– indicator lamp 14, 88
Belt tensioner, refer to
Safety belts 31
Belts 31
Beverage holder 61
Blinker, refer to Turn signal
indicators 42
Blower
– air conditioning 56
– automatic climate
control 58
BMW High Performance
synthetic oils 80
BMW Maintenance
System 82
Bore 94
Brake fluid 81
– indicator lamp 14, 81
– refilling 81
Brake Force Display 52
Brake hydraulic system 65
Brake hydraulics
– indicator lamp 14
Brake lamps
– bulb replacement 86
– indicator lamp, defective
bulb 14
Brake pads 66
– indicator lamp 14
Everything from A - Z
Index

Everything from A - Z
100 Indicator lamps
– airbag 33
– alarm system 27
– brake fluid 81
– engine temperature 47
– flat tire 75
– Flat Tire Monitor 53
– reserve tank 47
Inflation pressure 71
– monitor 53
INSPECTION 48
Instrument cluster 13
Instrument lighting 46
Instrument panel 12
Interior
– central locking system 20
Interior lamps 19, 46
– remote control 19
Interior mirror
– automatic dimming
feature 33
Interior motion sensor 19
– deactivating 28
Interior rearview mirror 32
Interlock 38
Intermittent operation,
windshield wipers 43
J
Jack 87
– jacking points 87
Jets, refer to
Ventilation 56, 59
Jump-starting 89
K
Key Memory 37
Keys 18
– spare 18
– with remote control 18
Knee airbags 33
L
Lamp
– passenger airbags 35
Lamp control 45
Lamp replacement 84Lamps
– backup lamp 86
– brake lamp 86
– bulb replacement 84
– center high-mount brake
lamp 87
– daytime driving lamps 45
– defective bulbs 45
– fog lamps 46
– headlamp flasher 46
– headlamps 84
– high beams 46, 85
– indicator lamp, defective
bulb 14
– instrument lighting 46
– interior lamps 46
– lamp replacement 84
– license plate lamps 87
– LIGHTS ON warning 45
– low beams 45, 85
– low beams, automatic 45
– parking lamps 45
– reading lamps 46
– rear lamp 86
– standing lamps 46
– turn signal indicators 86
– xenon lamps 85
LATCH child-restraint
mounting system 36
Length 95
License plate lamps
– bulb replacement 87
Light switch 45
Lighter 61
LIGHTS ON warning 45
Loads, securing 66
Lock
– door 20
Locking 19
Longlife oils 80
Low beams 45
– automatic 45
– bulb replacement 85
– indicator lamp, defective
bulb 14
Luggage
compartment 22, 94
– capacity 94
– enlarging 22
– remote control 19Luggage compartment
lid 21
– emergency release from
luggage compartment's
interior 22
– opening from the
inside 21
– opening from the
outside 21
– opening/closing 21
– remote control 19
M
M+S tires 76
Maintenance system 82
Malfunction
– door lock 20
– fuel filler door 70
– remote control 19
– storage compartment 60
Malfunction of electrical
accessory 88
Manual convertible top 23
Manual operation
– door lock 20
– electrical convertible
top 25
– fuel filler door 70
– storage compartment 60
Manual transmission 40
Master key 18
Maximum cooling 58
MC operation, refer to the
Owner's Manual for Radio
MD operation, refer to the
Owner's Manual for Radio
Mechanical convertible
top 23
Mechanical seat 29
Memory
– seats 30
Memory, refer to Key Mem-
ory, Vehicle Memory 37
Microfilter 59
Microphone, cellular
phone 61
Mirrors 32
– heating 32
Modifications,
technical 7

At a glance
Controls
Driving tips
Mobility
Reference
101
N
Navigation system, refer to
the separate Owner's
Manual
Nets 60
O
OBD socket 83
Odometer 47
Oil 79
– additives 80
– capacity 96
– quality 80
Oil change interval, refer to
the Service and Warranty
Information Booklet for
US models/Warranty and
Service Guide Booklet for
Canadian models
Oil consumption 79
Oil dipstick 79
Oil filter change 96
Oil level 79
– checking 79
– indicator lamp 14
Oil pressure 79
– indicator lamp 14
Oil sensor 79
– indicator lamp 14
OIL SERVICE 48
Oil types 80
Onboard computer, refer to
Computer or to the sepa-
rate Owner's Manual for
Onboard Computer
Onboard tool kit 84
Operating elements 12
Outlets, refer to
Ventilation 56, 59
Output 94
Outside air mode
– air conditioning 56
Outside temperature
display 48
– changing units 49
– in computer 49
P
Paintwork, refer to the Car-
ing for your vehicle bro-
chure
Panel lighting 46
Panic mode 19
Parking brake 39
– indicator lamp 14
Parking lamps 45
Particle filter
– automatic climate
control 56
Passenger airbags
– activation/deactivation 34
Pollen, refer to
– Microfilter/activated-
charcoal filter 59
– Particle filter 56
Power seat 30
Power steering, electric 42
Power windows 22
Preparations for the cellular
phone 61
Pressure monitor, tires 53
Pressure, tires 71
R
Radiator 96
Radio, refer to the Owner's
Manual for Radio
Rain sensor 43
Reading lamps 46
Rear lamps 86
– bulb replacement 86
Rear window defroster
– air conditioning 56
– automatic climate
control 59
Rearview mirror 32
Recirculated air mode
– air conditioning 56
– automatic climate
control 58
Refueling 70
Remote control 18
– interior motion sensor 19
– luggage compartment
lid 19
– malfunction 19Remote control keys 18
Replacement key 18
Replacement of tires 73
Reserve tank indicator
lamp 47
Restraint systems 34
Reverse 40
Run Flat tires 73, 75, 87
– flat tire 75
S
Safety belts 31
Safety defects 8
Seat adjustment
– storing 30
Seat heating 31
Seat memory 30
Seats 29
– adjustment,
mechanical 29
– adjustment, power 30
Securing loads 66
Securing, locking the
vehicle 19
Selector lever
– automatic
transmission 40
– position, automatic
transmission 40
Service 48
Service and warranty 7
Service and Warranty Infor-
mation Booklet 82
Service Engine Soon 83
– indicator lamp 14
Service interval
display 48, 82
Shiftlock 40
Side airbags 33
Snow chains 76
Socket
– for Onboard
Diagnostics 83
– refer to Cigarette lighter
socket 61
Spare fuses 88
Spare key 18
Special oils 80
Speed control, refer to
Cruise control 44