BMW Z4M COUPE 2006 E86 Owner's Guide

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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.

Under the hood
30 Only use oils specifically approved for your
vehicle model.
Your BMW Center will be glad to advise
you about oils currently approved for your
vehicle.<
You can also call BMW of North America toll-
free at 1-800-831-1117 or visit this website:
www.bmwusa.com to obtain this information.
Do not use any oil additives, as they could
cause engine damage under some cir-
cumstances.<
Alternative oil grades
If a high-performance synthetic oil approved by
BMW should be unavailable, you may use small
volumes of other oils for topping up between oil
changes. The following data must appear on
the packaging:
>Viscosity
preferred: SAE 10W-60
alternative: SAE 5W-40 or SAE 10W-40
>Specification
preferred: API SJ/CF
alternative: API SJ, also SK, SL, S...
Low ambient temperatures
The oils used by BMW at the factory for your
vehicle model can be used at virtually all ambi-
ent temperatures. However, if the vehicle is
operated for a longer period at temperatures
below –47/–206, your BMW Center will be
glad to recommend a suitable oil.

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Replacing components
Onboard tool kit
The onboard tool kit is stored in a tool pouch.
Roadster
The onboard tool kit can be found on the right-
hand side of the cargo bay in a compartment
next to the battery cover.
Coupe: access to onboard tool kit
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. hand side of the cargo bay on top of the battery.
M Mobility System
Repairing a flat tire
To repair a flat tire, an M Mobility System is pro-
vided in your BMW Z4 M Roadster/Z4 M Coupe.
Using this system you can apply a sealant to the
inside of the tire, seal off the damaged area,
restore the tire inflation pressure and then con-
tinue driving.
Safety measures in the event of a flat:
Park the vehicle as far as possible from
passing traffic and on solid ground. Switch on
the hazard warning flashers.
Lock the steering wheel so that the wheels are
facing straight ahead. Apply the handbrake and
engage first or reverse gear. Have all vehicle
occupants get out of the vehicle and ensure
that they remain outside the immediate area in a
safe place, such as behind a guardrail.
If a warning triangle or portable hazard warning
lamp is required, set it up on the roadside at an
appropriate distance from the rear of the vehi-
cle. Comply with all national safety guidelines
and regulations.<
Preparation
If possible, do not remove foreign bodies which
have penetrated the tire.

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.
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. 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
9Connecting hose for connecting compres-
sor and sealant bottle or compressor and
wheel

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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. Switch off
the device briefly to check the tire's cur-
rent inflation pressure.
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.<

Replacing components
34
Continued driving
Do not exceed the permissible maximum
speed of 50 mph or 80 km/h, otherwise
accidents could result.<
Reinitialize the Flat Tire Monitor. For
instructions, refer to the Owner's Manual
for the BMW Z4.
Have the defective tire and the sealant bottle of
the M Mobility System replaced as soon as
possible.<

Reference
At a glance
Controls
Driving tips
Mobility
35

Reference
This chapter will help you find the desired
information as quickly as possible. It contains
the Technical data section as well as the
manual's index.
Reference

Technical data
38
Technical data
Engine data
Z4 M Roadster/Z4 M Coupe
Displacement cu in/cmµ198.1/3,246
Number of cylinders6
Maximum power output hp 330
at engine speed rpm 7,900
Maximum torque ft lbs/Nm 262/355
at engine speed rpm 4,900