2006 BMW Z4 COUPE engine

Giving and receiving assistance
100 1.Open the cover of the BMW jump-starting
connection. Do so by pulling the tab.
2.Attach one terminal clamp of the plus/+
jumper cable to the positive terminal of the
battery or a jump-starting connection of the
vehicle providing assistance.
3.Attach the second terminal clamp of the
plus/+ jumper cable to the positive terminal
of the battery or a jump-starting connection
of the vehicle to be started.
4.Attach one terminal clamp of the minus/–
jumper cable to the negative terminal of the
battery or to an engine or body ground of
the assisting vehicle.
Your BMW is equipped with a special nut,
refer also to the engine compartment over-
view on page87.
5.Attach the second terminal clamp of the
minus/– jumper cable to the negative termi-
nal of the battery or to the engine or body
ground of the vehicle to be started.
Starting the engine
1.Start the engine of the donor vehicle and
allow it to run for a few minutes at slightly
increased idle speed.
2.Start the engine of the other vehicle as
usual.
If the first start attempt is not successful,
wait a few minutes before another attempt
in order to allow the discharged battery to
recharge.
3.Let the engines run for a few minutes.
4.Disconnect the jumper cables by reversing
the above connecting sequence.
If necessary, have the battery checked and
recharged.
Never use spray starter fluids to start the
engine.<
Tow-starting, towing away
Using the towing eyelet
The screw-in tow fitting must always be carried
in the car. It can be attached at the front or rear
of your BMW.
It is located in the onboard tool kit, refer to
page93.
Only use the towing eyelet supplied with
the vehicle, and screw it in firmly until it
stops. Use the towing eyelet for towing on
paved roads only. Avoid subjecting the towing
eyelet to lateral loads, e.g. do not lift the vehicle
using the towing eyelet. Otherwise the tow fit-
ting and the vehicle could be damaged.<

Reference
At a glance
Controls
Driving tips
Mobility
101
Access to the threaded socket
Press out the cover with a screwdriver inserted
in the recess at the top.
Being towed
Make sure that the key is in position 1,
because otherwise the steering lock
could engage and the vehicle could no longer
be steered. There is no power assist while the
engine is off. Therefore, you will need to exert
more force to brake and steer the vehicle.<
Turn on the hazard warning flashers, if required
by national regulations. If the electrical system
has failed, clearly identify the vehicle being
towed, e.g. by placing a sign or a warning trian-
gle in the rear window.
Manual transmission
Gearshift lever in idling position.
Automatic transmission
Selector lever in position N.
Do not exceed a towing speed of 45 mph/
70 km/h or a towing distance of 90 miles/
150 km. Otherwise, the automatic transmission
could be damaged.<
Towing methods
In some countries, it is not permitted to tow the
vehicle with a tow bar or tow rope on public
roads.
Familiarize yourself with the applicable towing
regulations for the country in which you are
driving.
With a tow bar
The towing vehicle must not be lighter
than the towed vehicle, otherwise it may
be impossible to maintain control.<
The towing eyelets of both vehicles should be
on the same side. Should it prove impossible to
avoid mounting the tow bar at an angle, please
observe the following:
>Clearance and maneuvering capability will
be sharply limited during cornering.
>The tow bar will generate lateral forces if it is
attached offset.
Attach the tow bar to the tow fittings only,
as attaching it to other parts of the vehicle
could result in damage.<
With a tow rope
Before the towing vehicle starts to drive off,
make sure that the tow rope is taut.
Use nylon ropes or straps for towing
because they prevent sudden jerking
movements. Attach the tow rope to the tow fit-
tings only, as attaching it to other parts of the
vehicle could result in damage.<
With a tow truck
Have the BMW transported by a tow truck with
a lift sling or a flat bed.
Do not lift the vehicle by the towing eye-
let, or by parts of the body or chassis.
Otherwise damage could result.<
Tow-starting
Do not tow-start vehicles with an auto-
matic transmission. Vehicles with a cata-
lytic converter should only be tow-started if the

Giving and receiving assistance
102 engine is cold. It is recommended to start the
engine using jumper cables, refer to page99.<
1.Switch on hazard warning flashers, comply
with local regulations.
2.Turn the key to position 2.
3.Shift into 3rd gear.
4.Have the vehicle tow-started with the clutch
depressed and slowly release the clutch.
After the engine starts, immediately
depress the clutch again.
5.Stop at a suitable location, remove the tow
bar or rope and switch off the hazard warn-
ing flashers.
6.Have the vehicle checked.

Technical data
106
Technical data
Engine data
Z4 3.0iZ4 3.0si
Displacement cu in/cmµ182.8/2,996 182.8/2,996
Number of cylinders 6 6
Maximum power output hp 215 255
at engine speed rpm 6,250 6,600
Maximum torque ft lbs/Nm 185/251 220/300
at engine speed rpm 2,750 2,750

Technical data
110
Capacities
Notes
Fuel tank US gal/liters approx. 14.5/55 Fuel specifications: page79
including reserve of US gal/liters approx. 2.1/8
Window washer system For details: page44
including headlamp washers US quarts/liters approx. 5.3/5
Cooling system including
heating circuitFor details: page89
>Manual transmission US quarts/liters 8.0/7.6
>Automatic transmission US quarts/liters 8.9/8.4
Engine with oil filter renewal US quarts/liters 6.9/6.5 Oil grades: page89

Everything from A to Z
112
Everything from A to Z
Index
A
ABS Antilock Brake
System49
– indicator lamp12
Accident, refer to Emergency
call98
Acknowledgment signal for
locking/unlocking vehicle19
Activated-charcoal filter for
automatic climate control63
Additives
– coolant89
– engine oil89
Adjusting
– seats30
Adjusting the thigh support32
Airbags52
– deactivating36
– indicator/warning lamp13
– passenger airbags indicator
lamp36
– reactivation36
– safe seating position30
Airbag switch, refer to Key
switch for passenger
airbags35
Air conditioning58
Air-conditioning operation,
refer to Cooling
function59,62
Air distribution
– air conditioning59
– automatic climate control62
– individual59,62
Air flow rate
– air conditioning59
– automatic climate control62
Airing out, refer to
Ventilation59,63
Air outlets, refer to
Ventilation59,63Air pressure, refer to Tire
inflation pressure80
Air recirculation, refer to
Recirculated-air
mode59,63
AKI, refer to Fuel
specifications79
Alarm system23
– avoiding unintentional
alarms24
– interior motion sensor24
– switching off an alarm24
– tilt alarm sensor24
All-season tires, refer to
Winter tires83,85
Ambient air, refer to
Recirculated-air
mode59,63
Ambient temperature
display46
Antenna, refer to the Caring
for your vehicle brochure
Antifreeze44,89
– coolant89
– washer fluids44
Antilock Brake System
ABS49
– indicator/warning lamp12
– indicator lamp13
Anti-theft alarm system, refer
to Alarm system23
Anti-theft protection19,23
Approved engine oils89
Artificial leather, refer to the
Caring for your vehicle
brochure
Ashtray65
Assistance systems, refer to
Driving stability control
systems49
AUC Automatic recirculated-
air control63Automatic
– air distribution62
– air flow rate62
– cruise control44
– headlamp control55
– luggage compartment lid
operation22
– recirculated-air control
AUC63
– tailgate operation21
Automatic car wash, refer to
the Caring for your vehicle
brochure
Automatic climate control61
Automatic convertible top27
Automatic lamps55
Automatic transmission with
Steptronic40
– indicator lamp13
– interlock38,40
– selector lever41
– selector lever lock40
– shiftlock40
– shift paddles on steering
wheel41
– towing the vehicle101
– tow-starting101
AUTO program for automatic
climate control62
Average fuel consumption48
– setting unit of measure48
Average speed48
– setting unit of measure48
Avoiding unintentional
alarms24
Axle loads, refer to
Weights109
B
Backrests, refer to Seat
adjustment31

Reference
At a glance
Controls
Driving tips
Mobility
113
Backup lamps
– bulb replacement96
Bandages, refer to First-aid
kit99
Bar, refer to Towing
methods101
Battery97
– charging97
– disposal97
– indicator/warning
lamp12,97
– jump-starting99
– power supply interruption97
– remote control18
Being towed101
Belts, refer to Safety belts33
Belt tensioner, refer to Safety
belts33
Beverage holders65
Blower, refer to Air flow
rate59,62
BMW Homepage4
BMW Maintenance
System91
Bottle holders, refer to
Beverage holders65
Brake assist, refer to Dynamic
Brake Control DBC49
Brake fluid90
– indicator/warning lamp13
– level90
– warning lamp90
Brake Force Display52
Brake hydraulics, refer to
Brake system90
Brake hydraulic system
– indicator/warning lamp13
Brake lamps
– brake force display52
– bulb replacement96
– indicator lamp, defective
lamp13
Brake pads90
– break-in procedures70
– warning lamp90
Brake pad wear indicator
– brake pads90
– indicator/warning lamp13Brake rotors72
– brake system72
– break-in procedures70
Brakes
– ABS49
– brake fluid90
– brake pads90
– braking safely71
– break-in procedures
70
– indicator/warning
lamps13,50
– parking brake39
Brake system90
– brake fluid90
– brake pads90
– break-in procedures70
– disc brakes72
– indicator/warning lamp13
Brake wear warning90
Breakdown
– Flat Tire Monitor51
Breaking in the clutch70
Breaking in the differential,
refer to Engine and
differential70
Break-in procedures70
Bridging, refer to Jump-
starting99
Bulb changing, refer to Lamps
and bulbs93
Bulb replacement, refer to
Lamps and bulbs93
Burned fuel, refer to
Fuel specifications79
Buttons on the steering
wheel11
C
California laws
– Event Data Recorders92
– Proposition 65 warning5
Can holders, refer to Beverage
holders65
Capacity
– cargo bay, refer to
Weights109
Car battery, refer to Vehicle
battery97Car care, refer to the Caring
for your vehicle brochure
Care, refer to the Caring for
your vehicle brochure
Care products, refer to the
Caring for your vehicle
brochure
Cargo bay23
– capacity109
– floor panel93
– increasing capacity23
– opening and closing21,22
– opening from inside the
vehicle21,22
– opening from the outside21
– roller-blind cover65
Cargo loading
– stowing cargo73
– vehicle72
Car jack
– jacking points97
Car keys, refer to The key
set18
Carpet care, refer to the
Caring for your vehicle
brochure
Car phone, refer to the
separate Owner's Manual
Car radio, refer to the separate
Owner's Manual
Car wash, refer to the Caring
for your vehicle brochure
Catalytic converter, refer to
Hot exhaust system70
CD changer, refer to Owner's
Manual for Radio/Onboard
Computer
CD operation, refer to Owner's
Manual for Radio/Onboard
Computer
Center console, refer to
Around the center
console14
Center high-mount brake
lamp, bulb replacement96
Central locking
– from inside21
Central locking system19

Everything from A to Z
114 Changes, technical, refer to
For your own safety5
Changing a wheel96
– Run-Flat Tires96
Charge indicator lamp12,97
Check gas cap, indicator
lamp13
Child-restraint mounting
system, LATCH37
Child-restraint systems36
Child seat, refer to Installing
child-restraint systems36
Chrome parts, refer to the
Caring for your vehicle
brochure
Cigarette lighter65
Cleaning the rear window,
refer to the Caring for your
vehicle brochure
Cleaning the vehicle, refer to
the Caring for your vehicle
brochure
Cleaning the windows
– automatically, refer to Rain
sensor43
– reservoir capacity110
– spray nozzles44
– washer/wiper system43
– washer fluid44
– washer fluid reservoir44
Clock47
– 12h/24h mode48
– onboard computer48
– setting48
– setting, refer also to Owner's
Manual for Radio/Onboard
Computer
Clothes hooks66
Cockpit10
Cold start, refer to Starting the
engine38
Comfort area, refer to Around
the center console14
Compact disc operation, refer
to Owner's Manual for
Radio/Onboard ComputerComputer48
– button BC48
– clock, 12h/24h mode48
– refer to Owner's Manual for
Onboard Computer
Computer, refer to the
separate Owner's Manual
Condensation, refer to When
the vehicle is parked72
Condensation, removing from
windows
– air conditioning59
– automatic climate control62
Configuring settings, refer to
Vehicle Memory, Key
Memory18
Connecting vacuum cleaner,
refer to Connecting
electrical appliances67
Consumption, refer to
Average fuel
consumption48
Consumption display, refer to
Fuel gauge46
Controls, refer to Cockpit10
Convenience operation
– convertible top20
– from outside20
– windows20
Convertible top26,27
– care, refer to the Caring for
your vehicle brochure
– convenience operation20
– electrical fault28
– emergency closing28
– fully automatic27
– malfunction28
– manual26
– mechanical26
Convertible top compartment
panel23
Coolant89
– checking level89
– indicator lamp13
– thermometer47
Coolant water, refer to
Coolant89Cooling
– maximum62
– refer to Switching cooling
function on/off59,62
Cooling fluid, refer to
Coolant89
Cooling function
– air conditioning59
– automatic climate control62
Cooling system, refer to
Capacities110
Copyright2
Correct tires84
Cruise control44
Cruising range48
Cup holders, refer to
Beverage holders65
Curb weight, refer to
Weights109
Cylinders, refer to Engine
data106D
Dashboard, refer to
Cockpit10
Dashboard lighting, refer to
Instrument lighting56
Data, technical
– capacities110
– dimensions107,108
– engine106
– measurements107,108
– weights109
Daytime running light55
DBC Dynamic Brake
Control49
– indicator/warning lamp13
Deadlocking, refer to
Locking19
Defective bulb55
Defrosting, windows59,62
Defrosting the windshield,
refer to Defrosting
windows59,62
Defrosting windows and
removing condensation
– air conditioning59
– automatic climate control62