octane BMW Z4 2.5I 2005 Owners Manual

Refueling
76
Refueling
Fuel filler door
1.Open fuel filler door
2.Turn the gas cap in a counter-clockwise
direction
3.Place the cap in the bracket on the filler
door.
Releasing manually
If an electrical malfunction occurs, you can
unlock the fuel filler door manually:
1.Remove the covers of the tail lamps by turn-
ing the lock to the right; refer also to
page93
2.Pull the luggage compartment trim panel
slightly toward the interior.
The green button with the fuel pump sym-
bol becomes visible
3.Undo the adhesive strip and pull off
4.Pull the button
The fuel filler door is released.
Pull on the button slowly and carefully
as it could otherwise be torn off.<
Note when refueling
When handling fuels, comply with all of
the applicable safety precautions posted
at the service station.<
When refueling, insert the filler nozzle com-
pletely into the filler pipe. Lifting the nozzle dur-
ing refueling
>results in premature shutoff
>and will reduce the effect of the vapor
recovery system on the pump.
The fuel tank is full when the filler nozzle shuts
off the first time.
Closing the fuel filler cap
Place the cap in position and turn it clockweise
until a clearly audible click is heard.
Close the filler cap carefully after refueling
until a click is heard. While closing, be
sure not to squeeze the strap which is fastened
to the cap. A loose or missing cap will activate
the Check gas cap lamp
*.<
Warning lamp
* lights up.
The gas cap is not properly closed or is
missing. Check if the gas cap is prop-
erly closed.
Contents of the fuel tank
Approx. 14.5 gallons/55 liters, of which approx.
2.1 gallons/8 liters are reserve capacity.
Fill the fuel tank before it is completely
empty. Driving to the last drop of fuel can
prevent the engine from operating properly and
result in damage.<
Fuel specifications
The engine uses lead-free gasoline only.
Required fuel
Premium Unleaded Gasoline, Minimum Octane
Rating: 91.

Reference
At a glance
Controls
Driving tips
Mobility
77
Minimum Octane Rating corresponds to the
Anti Knock Index AKI and is determined by the
so-called (R+M)/2 method.
Do not use leaded gasoline, as otherwise
the lambda probe and catalytic converter
will be permanently damaged.<
Use high-quality brands
Field experience has indicated significant dif-
ferences in fuel quality: volatility, composition,
additives, etc., among gasolines offered for sale
in the United States and Canada. Fuels contain-
ing up to and including 10 % ethanol or other
oxygenates with up to 2.8 % oxygen by weight,
that is, 15 % MTBE or 3 % methanol plus an
equivalent amount of co-solvent, will not void
the applicable warranties with respect to
defects in materials or workmanship.
The use of poor-quality fuels may result in
drivability, starting and stalling problems
especially under certain environmental condi-
tions such as high ambient temperature and
high altitude.
Should you encounter drivability problems
which you suspect could be related to the fuel
you are using, we recommend that you respond
by switching to a recognized high-quality
brand.
Failure to comply with these recommendations
may also result in unscheduled maintenance.<

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