2005 BMW 645CI CONVERTIBLE engine

Notes
6
For your own safety
Maintenance and repair
Advanced technology, e. g. the use of
modern materials and high-performance
electronics, requires specially adapted mainte-
nance and repair methods. Therefore, have cor-
responding work on your BMW carried out only
by a BMW center or a workshop that works
according to BMW repair procedures with cor-
respondingly trained personnel. If work is car-
ried out improperly there is a danger of conse-
quential damage and the related safety risks.<
California Proposition 65 Warning
California law requires us to issue the following
warning:
Engine exhaust and a wide variety of
automobile components and parts,
including components found in the interior fur-
nishings in a vehicle, contain or emit chemicals
known to the State of California to cause cancer
and birth defects and reproductive harm. In
addition, certain fluids contained in vehicles and
certain products of component wear contain or
emit chemicals known to the State of California
to cause cancer and birth defects or other
reproductive harm.
Battery posts, terminals and related accesso-
ries contain lead and lead compounds. Wash
your hands after handling.
Used engine oil contains chemicals that have
caused cancer in laboratory animals. Always
protect your skin by washing thoroughly with
soap and water.<
Parts and accessories
For your own safety, use genuine parts
and accessories approved by BMW.
When you purchase accessories tested and
approved by BMW and Genuine BMW Parts,
you simultaneously acquire the assurance that
they have been thoroughly tested by BMW to
ensure optimum performance when installed
on your vehicle.
BMW warrants these parts to be free from
defects in material and workmanship.
BMW will not accept any liability for damage
resulting from installation of parts and accesso-
ries not approved by BMW.
BMW cannot test every product made by other
manufacturers to verify if it can be used on a
BMW safely and without risk to either the vehi-
cle, its operation, or its occupants.
Genuine BMW Parts, BMW Accessories and
other products approved by BMW, together
with professional advice on using these items,
are available from all BMW centers.
Installation and operation of non-BMW
approved accessories such as alarms, radios,
amplifiers, radar detectors, wheels, suspension
components, brake dust shields, telephones,
including operation of any mobile phone from
within the vehicle without using an externally
mounted antenna, or transceiver equipment, for
instance, CBs, walkie-talkies, ham radios or
similar accessories, may cause extensive dam-
age to the vehicle, compromise its safety, inter-
fere with the vehicle's electrical system or affect
the validity of the BMW Limited Warranty. Refer
to your BMW center for additional informa-
tion.<
Maintenance, replacement, or repair of
the emission control devices and sys-
tems may be performed by any automotive
repair establishment or individual using any cer-
tified automotive part.<

Cockpit
12
Instrument cluster
1Indicator lamps for turn signals13
2Speedometer
3Indicator and warning lamps13
4Display for active cruise control
*64
5Tachometer69
and Engine oil thermometer70
6Display for
>Time/date69
>Outside temperature69
>Indicator and warning lamps71
>Speed for cruise control62
>Desired speed for active cruise
control
*647Display for
>Odometer and trip odometer69
>Computer74
>Date and remaining distance to be
driven for service requirement70
>Automatic transmission
with Steptronic
*58
>SMG Sequential manual
transmission
*57
>Dynamic Driving Control59
> Check Control message present71
8Fuel gage70
9Resetting the trip odometer to zero69

At a glance
13Reference
Controls
Driving tips
Communications
Navigation
Entertainment
Mobility
Indicator and warning lamps
The concept
Indicator and warning lamps and their combina-
tions appear in the indicator area1 and in the
display2. For better differentiation of malfunc-
tions, different symbols can appear in the dis-
play 2.
Some lamps in the indicator area1 are checked
for proper operation when the engine is started
or the ignition is switched on and light up briefly
in the process.
Confirmation of active functions
The following indicator lamps in the indicator
area1 indicate that certain functions are active:
Required action in case of a
malfunction
All warning lamps and indicator lamps not pre-
viously listed are also accompanied by text
messages at the bottom of the Control Display.
These may contain detailed information on the
cause of a malfunction and the corresponding
action required.
Sometimes warning lamps are also accompa-
nied by additional text messages on the Control
Display which are displayed immediately. Text
messages which do not appear immediately are
stored and can be displayed at a later time. For
details on displaying these messages later,
refer to Check Control on page71. Turn signals60
Handbrake set55
Handbrake for Canadian models
Front fog lamps92
DTC Dynamic Traction Control83
High beams/headlamp flasher92
DSC Dynamic Stability Control83

Opening and closing
40 dren away from the travel path of the convert-
ible top.
For safety reasons, only operate the convertible
top when the vehicle is at a standstill.<
If you have initiated top operation with the
vehicle at a stop and then start to drive,
e.g. at a traffic light, you can continue the ini-
tiated operation up to a speed of 20 mph/
30 km/h:
To do so, press and hold the corresponding
button.<
Partial vacuums that occur at higher
speeds in the passenger compartment
can make the convertible top flap. Use the auto-
matic climate control to increase the air supply
so that a partial vacuum in the vehicle does not
occur.<
Prior to opening and closing
>Read carefully and comply with the safety
precautions that appear above.
>Ensure that the convertible top compart-
ment floor in the luggage compartment is
folded down, refer to page34, as otherwise
the convertible top cannot be opened.
>Ensure that the luggage compartment lid is
closed.
Opening and closing
With the ignition key in position 1 or greater,
refer to page54, and the vehicle stationary:
So as not to place an excessive load on
the battery, only operate the convertible
top with the engine running, if possible.
Before closing the convertible top, remove for-
eign bodies from the windshield frame, as these
might inhibit closing of the convertible top.<1Closing
2LED
3Opening
When the button for top operation is
pressed, the side windows move down-
ward slightly; the rear window is lowered com-
pletely.
If you hold down the button after the LED2
goes out, the windows are raised again.
If the opening or closing action is not com-
pleted, the luggage compartment lid cannot be
opened.<
LED
In the following situations, in addition to the
LED, a message is displayed on the Control
Display and an acoustic signal may sound:
>During convertible top operation, the LED
lights up green. It goes out as soon as the
opening or closing action is ended.
> If the LED flashes red when you release the
button, the opening or closing action has
not yet finished.
>If the LED lights up red when the button is
pressed, either the floor of the convertible
top storage compartment in the luggage
compartment is in the raised position or a
malfunction has occurred. The convertible
top cannot be moved.
Interruption
The automatic sequence of movements is
interrupted immediately if the button for top
operation is released. The sequence can be
continued in the desired direction using the
button.
If the opening or closing action is interrupted for
a longer period, the convertible top remains in
that position for approx. 15 minutes before it
slowly moves to a stable position.
A convertible top which is not completely
opened or closed presents a danger.
Do not interrupt and continue the closing action
several times in succession, as otherwise the
top mechanism can be damaged.<

Driving
54
Driving
Ignition lock
0 Steering locked
The key can only be inserted or removed in this
position.
After removing the key, turn the steering wheel
slightly until it locks.
Interlock on automatic transmission*
>Only move the selector lever from
position P with the engine running.
>To turn the key back to position 0 or to
remove it, first select the selector lever
position P.
1 Steering unlocked
A slight steering wheel movement often makes
it easier to turn the key from 0 to 1.
Some vehicle systems are ready for operation.
2 Ignition switched on
All vehicle systems are ready for operation.
3 Start engine
Starting engine
Do not run the engine in closed rooms, as
otherwise the inhaling of toxic exhaust
gases can cause unconsciousness and death.
The exhaust gases contain carbon monoxide,
an odorless and colorless, but highly toxic gas.
Never leave an unattended vehicle with the engine running, as such a vehicle represents a
potential safety hazard.
To prevent the vehicle from rolling, always
select neutral position or position N and apply
the handbrake before leaving the vehicle with
the engine running.<
When starting the engine, do not press the
accelerator pedal.
Do not allow the engine to warm up by leaving it
running while the vehicle remains stationary.
Instead, begin to drive immediately at a moder-
ate engine speed.
Special starting conditions
Press the accelerator pedal halfway down when
starting if
>the engine fails to start on the first attempt,
for instance, if it is very hot or cold
>the engine is started at very low tempera-
tures, below approx. + 57/– 156, at high
altitudes, above 3,300 ft/1,000 m
Avoid frequent starting in quick succes-
sion or repeated start attempts in which
the engine does not start. Otherwise, the fuel is
not burned or inadequately burned and there is
a danger of overheating and damaging the cat-
alytic converter.<
Manual transmission
1.Apply the handbrake.
2.Gearshift lever in neutral position.
3.Press the clutch pedal.
If the clutch pedal is not depressed,
the engine will not start.<
4.Start the engine.
Do not terminate the starting operation too
early, but after approx. 20 seconds at the
latest. When the engine starts, release the
ignition key immediately.

Controls
55Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
SMG Sequential manual transmission*
and automatic transmission*
Your BMW is equipped with the convenience
starting feature. It is sufficient to turn the igni-
tion key only briefly to position 3 and then
release it right away. The system responds by
automatically engaging the starter for a certain
period and allowing it to run until the engine
starts, after which it then disengages automati-
cally.
SMG Sequential manual transmission*
1.Press the brake pedal.
2.Engage selector-lever position N.
3.Start the engine.
If the engine does not start, engage the
last gear selected again, refer to instru-
ment cluster display, and then shift into posi-
tion N.<
Automatic transmission with
Steptronic*
1.Press the brake pedal.
2.Engage selector-lever position P or N.
3.Start the engine.
Switching off engine
Do not remove the ignition key while the
vehicle is rolling, as otherwise the steer-
ing wheel lock will immobilize the steering.
When leaving the vehicle, remove the ignition
key and lock the steering.
When parking on a downhill incline, apply the
handbrake, as otherwise the vehicle could roll
away.<
Manual transmission
1.Turn the ignition key to position 1 or 0.
2.Shift into first gear or reverse.
SMG Sequential manual transmission*
1.Engage a drive position.
2.Turn the ignition key to position 1 or 0.
A signal sounds on stopping the engine.
Automatic transmission with
Steptronic*
1.Engage selector-lever position P.
2.Turn the ignition key to position 1 or 0.
Handbrake
The handbrake is primarily intended to prevent
the vehicle from rolling while parked; it brakes
the rear wheels.
Indicator lamp
The indicator lamp lights up, and an
acoustic signal also sounds when start-
ing off. The handbrake is engaged.
Indicator lamp for Canadian models.
Engaging
The lever engages automatically.
Releasing
Pull slightly upward, press the button and lower
the lever.
If exceptional circumstances should
make it necessary to engage the hand-
brake while the vehicle is in motion, do not pull it
too strongly. In doing so, continuously press the
button of the handbrake lever.
Strong application of the handbrake can lead to
overbraking of the rear axle and associated
'fishtailing' of the vehicle rear end.
The brake lamps do not light up when the hand-
brake is engaged.

Driving
56 Vehicles with manual or SMG transmission:
When parking on inclines, engage the hand-
brake, as even engaging the first or reverse gear
might not under certain circumstances secure
the vehicle against moving.
Vehicles with automatic transmission
*:
Engage selector-lever position P.<
To prevent corrosion and one-sided brak-
ing action, occasionally engage the hand-
brake lightly when the vehicle is slowly coming
to a stop if the traffic conditions are suitable.<
Manual transmission
When shifting into 5th/6th gear, press the
selector lever toward the right, otherwise
an inadvertent shift into 3rd or 4th gear could
damage the engine.<
Reverse gear
Select only when the vehicle is stationary.
When pressing the gearshift lever to the left,
overcome some resistance.
The backup lamps automatically switch on in
ignition key position 2.
SMG Sequential manual
transmission*
The concept
The SMG Sequential manual transmission is an
automated manual transmission in which an
electrohydraulic system handles the clutching
and gear changes.You operate the SMG using the selector lever in
the center console and two shift paddles on the
steering wheel.
It offers the following functions:
>Choice of manual or automatic mode:
Sequential mode or Drive mode
>Options of two drive programs: Normal or
Sport, refer to Dynamic Driving Control
page59
>Automatic downshifting and protection
against incorrect shifting even in sequential
operation
>Kick-down function in the Drive mode
>Acceleration assistant, refer to page59.
The SMG is operational in ignition key
position 2.
Selector-lever positions
The current selector-lever position is displayed
on the center console.
>R: Reverse gear
>N: Neutral, idle
>One-touch functions for Sequential mode:
+: manual upshifting
–: manual downshifting
>D: Drive mode
The transmission automatically shifts into
N if the driver's door is opened with the
engine running and neither the pedals, the shift
paddles nor the selector lever are operated.
This is indicated by an acoustic signal and the
flashing display N in the instrument cluster.<

Controls
57Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
Gear display
R N 1 to 6
The currently engaged gear is displayed pre-
ceded by a D in Drive mode.
Shiftlock
Press the brake pedal before shifting out of N;
the shift command will not be executed unless
the brake is applied.
R Reverse
Select only when the vehicle is stationary.
Sequential mode
After every engine start, as soon as the selector
lever is pushed to the right and the brake pedal
is pressed, the Sequential mode is activated.
You can shift up and down using the shifting
paddles or the selector lever. You do not need
to remove your foot from the accelerator to do
so.
It is also possible to start off in second gear, e.g.
in slippery conditions.
D Drive mode
In the Drive mode, all forward gears are shifted
automatically.
To switch from Sequential to Drive mode:
Briefly press the selector lever to the right
toward D.
Kick-down:
For rapid acceleration, e.g. passing, press the
accelerator pedal as far down as it will go: you
achieve maximum acceleration.To switch back to the Sequential mode: press
selector lever to the right again toward D or shift
using the shifting paddles or the selector lever.
Start off quickly on slopes. Do not hold
the vehicle on a hill by applying the throt-
tle, but engage the handbrake instead. Other-
wise overheating can occur in the transmission
region.<
Gear changes
Using selector lever
>To upshift, pull the selector lever back.
>To downshift, push the selector lever for-
ward.
Using shift paddles on steering wheel
>To shift up, pull one of the shift paddles.
>To shift down, press.
In the following situations, the SMG in the
Sequential mode assists you:
>Upshifts and downshifts are executed only
when they will res ult in a plausible combina-
tion of engine and vehicle speed; thus, for
example, a downshift that would cause the
engine to overrev will not be executed by
the system.
>When the vehicle is stationary, the trans-
mission automatically downshifts into first
gear.
>Shortly before dropping below a gear-
dependent minimum speed, the transmis-
sion downshifts automatically even without
your intervention.