
Reference
At a glance
Controls
Driving tips
Mobility
29
The warning lamp lights up in yellow
after the engine is switched off. A signal
also sounds.
Check the engine oil level using dipstick7 at the
earliest opportunity, e.g. when you stop to
refuel, and refill engine oil.
The warning lamp lights up in yellow
within 30 seconds after the engine is
started:
The oil level sensor is defective. Have the sys-
tem checked as soon as possible.
Checking the oil level
1.Position the vehicle on a level surface.
2.Switch off the engine when it is at operating
temperature.
3.After approx. 1 minute, pull dipstick 7 out
and wipe it off with a clean, lint-free cloth,
paper towel or something similar.
4.Carefully push the dipstick fully into its tube,
then pull it out again.
The oil level must be between the two
marks on the dipstick.
The oil volume between the two marks on the
dipstick corresponds to approx. 1.4 US quarts/
1.3 liters.
Adding engine oil
Do not add oil until the oil level has dropped
almost to the lower mark on the dipstick, refer to
Checking the oil level.
Do not add oil beyond the upper mark on
the dipstick, otherwise excessive oil can
lead to engine damage.<
Before you check the engine oil level after add-
ing oil, restart the engine and let it run to obtain
a correct reading. Then proceed as described
under Checking the oil level.
BMW engines are designed to operate
without oil additives; the use of additives
could even lead to damage in some cases. The
same applies to the transmission and differen-
tial as well as to the power steering.<
Continuous exposure to used oil has
caused cancer in laboratory tests. For this
reason, thoroughly wash any areas of skin that
have come into contact with oil using soap and
water.
Keep oils, greases, etc. out of the reach of chil-
dren and comply with the warnings on the con-
tainers. Otherwise, health hazards may result.<
Comply with the applicable environmen-
tal regulations concerning the disposal of
used oil.<
Recommendation: have the oil changed at your
BMW center.
Approved engine oils
The quality of the engine oil is extremely impor-
tant for the function and life of an engine. BMW
only approves specific oils after confirming their
suitability for use in its vehicles with extensive
testing.
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Replacing components
32 Corresponding information on using the
M Mobility System is also provided on the
device.<
Before using the M Mobility System, note
the information on the sealant bottle.<
Pull the sticker for the speed limit off the sealant
bottle and affix it to the steering wheel.
Please observe the expiry date on the
sealant bottle.<
Roadster
The M Mobility System is located on the right-
hand side of the cargo bay on the battery cover.
With the convertible top closed, fold the
convertible top compartment panel up to
remove the Mobility Set.<
To avoid any damage when opening the
convertible top, make sure that the con-
vertible top compartment panel in the cargo bay
has been folded down.<
Coupe: access to the Mobility Set
1.Turn the quick-release fastener counter-
clockwise.
2.Pull out the cover.When reinstalling the cover, make sure
that its tabs are inserted into the corre-
sponding cut-outs in the cargo bay trim panel.<
The M Mobility System is located on the right-
hand side of the cargo bay in a compartment on
top of the battery.
The M Mobility System consists of
1Sealant bottle and sticker with speed limit
2Filler hose from sealant bottle to wheel
3Cable and connector to cigarette lighter
socket
4Mounting for sealant bottle
5Compressor
6On/off switch
7Gauge for indicating tire inflation pressure
8Button for reducing tire inflation pressure
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Reference
At a glance
Controls
Driving tips
Mobility
33
9Connecting hose for connecting compres-
sor and sealant bottle or compressor and
wheel
Connector, cable and connecting hose are
attached to the bottom of the compressor.
Using the M Mobility System
To repair a flat tire with the M Mobility System,
proceed as follows:
>Fill sealant into wheel
>Distribute sealant
>Restore tire inflation pressure
Filling sealant into wheel
Strictly adhere to the specified order, oth-
erwise highly pressurized sealant could
escape.<
1.Shake sealant bottle.
2.Screw hose9 onto connection of sealant
bottle.
3.Unscrew and remove dust cap from valve of
defective wheel and screw filler hose2 of
sealant bottle onto valve.
4.Insert sealant bottle on compressor hous-
ing so that the bottle is in an upright posi-
tion.
5.Make sure that the device is switched off,
position 0.
6.Insert connector 3 into cigarette lighter
socket inside the vehicle.
7.With the ignition switched on:
Switch on the device and allow it to run for
approx. 3 minutes to fill the wheel with seal-
ant. It is not important what inflation pres-
sure the tire has after this.8.Switch off device.
9.Remove connecting hoses from connection
of sealant bottle and tire valve.
Stow the M Mobility System in the vehicle
again.
Distributing sealant
Immediately drive approx. 2 miles/3 km so that
the sealant is evenly distributed in the tire.
Do not exceed a speed of 35 mph or
60 km/h. Do not drive slower than 12 mph
or 20 km/h if possible.<
Restoring tire inflation pressure
1.After approx. 2 miles/3 km, pull over at a
suitable location.
2.Screw compressor hose9 directly onto tire
valve.
3.Insert connector 3 into cigarette lighter
socket inside the vehicle.
4.Correct tire inflation pressure to 29 psi/
200 kPa. With the ignition switched on:
>To increase inflation pressure: switch on
the compressor, position I. To check the
current pressure setting, briefly switch
off the device.
Do not allow the compressor to run
for more than 10 minutes, otherwise
the device will overheat and may be dam-
aged.<
>To reduce inflation pressure: press but-
ton 8.
If the inflation pressure is not maintained,
drive the vehicle again, refer to Distribut-
ing sealant. Then repeat steps 1 to 4 once.
Using the M Mobility System can be ineffective
with tire punctures larger than approx. 1/6 in/
4 mm. Please contact the nearest BMW center
or a workshop that works according to BMW
repair procedures with correspondingly trained
personnel if the tire cannot be made ready for
driving with the M Mobility System.<
The tire inflation pressure must be at least
29 psi/200 kPa. Otherwise do not con-
tinue driving.<
ba5.book Seite 33 Mittwoch, 28. Februar 2007 1:09 13

Reference
At a glance
Controls
Driving tips
Mobility
43
Engine compartment28
Engine data38
Engine oil28
– adding29
– additives29
– alternative oil grades30
– approved engine oils29
– dipstick29
– indicator/warning lamp10
– oil grades, refer also to
Approved engine oils29
Engine oil level28
– checking29
– indicator/warning lamp10
Engine oil pressure28
– indicator/warning lamp10
Engine oil sensor
– indicator/warning lamp10
Engine oil temperature, refer
to Engine oil
thermometer17
Engine oil thermometer17
Engine output, refer to Engine
data38
Engine speed, refer to Engine
data38
ESP Electronic Stability
Program, refer to Dynamic
Stability Control DSC18
F
Fasten safety belts
– warning lamp11
Filling sealant into wheel33
Flat tire
– Flat Tire Monitor18
– M Mobility System31
– Tire Pressure Monitor18
Flat tire, refer to Repairing a
flat tire31
Flat Tire Monitor FTM18
– indicator/warning
lamp11,18
– snow chains27
FTM, refer to Flat Tire
Monitor18Fuel
– capacity, refer to
Capacities41
– display17
– quality26
Fuel, refer to Fuel
specifications26
Fuel display, refer to Fuel
gauge17
Fuel reserve indicator, refer to
Fuel gauge17
Fuel tank capacity, refer to
Capacities41
G
Gasoline, refer to Fuel
specifications26
Gross weight, refer to
Weights41
Ground clearance22
H
Hazard warning flashers12
Headlamp flasher
– indicator lamp10
Headlamp washer reservoir
– volume, refer to
Capacities41
Height, refer to
Dimensions39,40
High beams
– indicator lamp10
Hood28
Horn8
I
Indicator/warning lamp
– brakes11
– Flat Tire Monitor18
– Tire Pressure Monitor19
Indicator and warning lamps,
overview10
Inflation pressure monitoring,
refer to
– Flat Tire Monitor18
– Tire Pressure Monitor18Inspection, refer to Service
interval display17
Instrument cluster10
Instrument panel, refer to
Cockpit8
Instrument panel, refer to
Instrument cluster10
Interval
– display, service17
K
Knock control26
L
Length, refer to
Dimensions39,40
Longlife oils30
– alternative oils30
– approved engine oils29
Low-beam headlamps
– indicator lamp11
Low beams
– indicator lamp, defective
bulb11
Luggage compartment
capacity, refer to Cargo bay
capacity41
Luggage compartment lid
– indicator lamp11
M
M Mobility System31
– compressor32
– viscosity32
Maintenance
– refer to Service interval
display17
Manufacturer5
Measurements, refer to
Dimensions39,40
Mobility System31
O
Octane numbers, refer to Fuel
specifications26
ba5.book Seite 43 Mittwoch, 28. Februar 2007 1:09 13

Refueling
So that you have important specifications avail-
able to you when you stop to refuel, we recom-
mend that you fill out this table with the data
that apply to your vehicle. The index of this Sup-
plementary Owner's Manual, or the index of the
BMW Z4 Owner's Manual, directs you to the
respective information.Fuel
Engine oil
The oil volume between the two marks on the
oil dipstick corresponds to approx.
1.4 US quarts/1.3 liters.
Tire inflation pressures
Specifications
Please enter your preferred fuel here.
Preferred oil grade
Summer tires
FrontRearWinter tires
FrontRear
Up to 2 persons
2 persons plus luggage
ba5.book Seite 47 Mittwoch, 28. Februar 2007 1:09 13