2006 BMW Z4 3.0I ROADSTER coolant reservoir

Reference
At a glance
Controls
Driving tips
Mobility
87
Important parts in the engine compartment
1Washer fluid reservoir for headlamp clean-
ing system and window washer system,
refer to page44
2Filler neck for engine oil, refer to Adding
engine oil3Jump-starting connection, refer to page99
4Reservoir for brake fluid, refer to page90
5Body ground, negative terminal, refer to
page100
6Expansion tank for coolant, refer to page89
Engine oil
Oil consumption is directly influenced by your
driving style and vehicle operating conditions.
Warning lamp
Engine oil pressure
The warning lamp lights up in red:
The engine oil pressure is too low.
Stop the vehicle immediately and
switch off the engine. Check the engine oil level
and top up if necessary. If the oil level is correct,
please contact your nearest BMW Center or a
workshop that works according to BMW repair
procedures with correspondingly trained per-
sonnel.Do not continue driving, otherwise the
engine could sustain serious damage
from inadequate lubrication.<
Engine oil level
The warning lamp lights up in yellow
while you are driving. In addition, a sig-
nal sounds and "+1.0" appears in the
instrument cluster, refer to page88.
The oil level is at the absolute minimum; refill as
soon as possible. Do not drive more than
125 miles/200 km before refilling.
The warning lamp comes on in yellow
after the engine is switched off. A signal
also sounds.
Add engine oil at the earliest opportunity, e.g.
when you stop to refuel.

Under the hood
90 pressure to escape, then continue turning
to open.
3.The coolant level is correct if the upper end
of the red float spindle is at least at the same
level as the upper edge of the filler neck but
no more than 3/4 in or 2 cm above it, i.e. up
to the mark on the float spindle. Refer also
to the diagram next to the filler neck.
4.If the coolant is low, slowly add coolant up to
the specified level; do not overfill.
5.Twist the cap back on and tighten it firmly.
6.Have the cause for the coolant loss
removed as soon as possible.
Brake system
Malfunction
Brake fluid
The warning lamp lights up although
the parking brake is not engaged:
Stop the vehicle immediately.
The brake fluid level in the reservoir is too low.
At the same time, you may notice that brake
pedal travel is longer. Have the system checked
as soon as possible.
If you continue driving, extended brake
pedal travel may be necessary and brak-
ing distances may be significantly longer. Be
sure to adapt your driving style accordingly.<
Canadian models display this warning
lamp.
Brake pads
The warning lamp lights up. The brake
pads have worn down to the minimum
safe limit. Have the brake pads
replaced as soon as possible.
For your own safety: only use brake pads
which BMW has approved for your spe-
cific vehicle model. BMW cannot evaluate non-
approved brake pads to determine if they are
suitable for use, and therefore cannot guaran-
tee the operating safety of the vehicle in the
event of their use.<

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

Reference
At a glance
Controls
Driving tips
Mobility
121
Starting assistance, refer to
Dynamic Stability Control
DSC49
Starting difficulties
– jump-starting99
– temperature39
Starting with a flat battery,
refer to Jump-starting99
Status of this Owner's Manual
at time of printing5
Steering wheel10
– adjusting34
– buttons on steering
wheel11
– lock38
Steptronic, refer to Sport
program and Manual
operation41
Storage compartments64
– electrical fault64
– eyeglasses compartment65
– glove compartment64
– opening manually64
Storage nets64
Storage space, refer to
– Cargo bay23
Storage space, refer to
Storage compartments64
Storing seat position, refer to
Seat memory32
Stowage, refer to Storage
compartments64
Summer tires, refer to Wheels
and tires80
Supply reservoir, refer to
Washer fluid reservoir44
Switches, refer to Cockpit10
Switch for passenger
airbags35
Switching cooling function on/
off manually59,62
Symbols4
T
Table of contents3
Tachometer46Tailgate21
– emergency operation22
– opening from inside the
vehicle21
– opening from the outside21
– opening manually22
– remote control19
– roller-blind cover65
Tail lamps, refer to Rear
lamps96
Tail lights, refer to Rear
lamps96
Tank contents
– refer to Capacities110
Tank indicator, refer to Fuel
gauge46
Technical data106
Technical modifications, refer
to For your own safety5
Telephone, refer to the
separate Owner's Manual
Telephone preparation
package67
Temperature
– air conditioning59
– automatic climate control62
– coolant, refer to Coolant
thermometer47
– engine47
Temperature display
– outside temperature46
– outside temperature
warning46
– setting unit of measure48
Tempomat, refer to Cruise
control44
Third brake lamp, refer to
Center high-mount brake
lamp96
Three-point safety belt, refer
to Safety belts33
Tilt alarm sensor25
Tilt function, passenger-side
mirror34
Tire inflation pressure80
– checking80
– loss51
– restoring80
Tire renewal84Tires
– age82,84
– break-in procedures70
– changing84
– coding82
– condition83
– damage84
– DOT quality grades82
– flat
51
– inflation pressure80
– pressure monitoring, refer to
Flat Tire Monitor51
– replacement84
– size80
– storage85
– temperature83
– traction83
– tread83
– tread wear83
– Uniform Tire Quality
Grading82
– wear indicators, refer to
Minimum tread depth83
– wheel and tire
replacement84
– winter tires85
– with emergency features,
refer to Run-Flat Tires84
Tire storage85
Tool kit, refer to Onboard tool
kit93
Torque, refer to Engine
data106
Tow bar101
Towing eyelet100
Towing the vehicle100
– methods101
– with automatic
transmission101
Tow rope101
Tow-starting101
Tow truck101
Track width, refer to
Dimensions107,108
Traction control, refer to
Dynamic Stability Control
DSC49