2004 BMW 645CI COUPE Page 48

Replacing components
182 >Active steering
The system is deactivated and has to be
initialized, refer to page 80. Until then,
greater steering wheel movement is
required
>Seat, mirror and steering wheel
memory
The position must be newly stored,
refer to page 44
>Time and date
The settings must be updated, refer to
page 73
>Radio
Radio stations have to be stored again,
refer to page 132
>Navigation system
Wait to see what happens with the
functional capability, refer to page 122.
Fuses
Never attempt to repair a blown fuse,
and do not replace a defective fuse
with a substitute of another color or amper-
age rating, as this could lead to overloading
of the wiring, ultimately resulting in a fire in
the vehicle.<
Information on the fuse assignment is
located below the bracket for the onboard
tool kit, see below.
In glove compartment
1.Press the button on the back in the cen-
ter of partition 1 and pull out the parti-
tion upwards, arrow 2
2.Press the coupling downwards,
arrow 3, and fold the lid 4 forwards.
In luggage compartment
Fold up the cover under the floor mat and
remove the bracket for the onboard tool kit.
Information on the fuse assignment 1 and
additional fuses 2 are provided there.

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183Reference
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Giving and receiving assistance
Emergency call*
Conditions for an emergency call:
>Ignition key as of position 1
>The car phone is logged on to a
portable telephone network
>The emergency call system is operable.
Coupe: emergency call button.
Convertible: emergency call button.
Initiating an emergency call
1.To open the protective cover of the
emergency call button:
Briefly press the protective cover
2.Press the emergency call switch for
at least 2 seconds.
The indicator lamp in the button lights
up. As soon as the voice connection to
the BMW Assist response center has
been established, the indicator lamp
flashes.
If conditions allow, remain in the vehicle
until the connection has been established.
You will then be able to provide a detailed
description of the situation.
If the current location of your vehicle can be
determined with vehicles with an activated
BMW Assist, it will be transmitted to the
BMW Assist response center.
Activating BMW Assist, refer to page 155.
If the indicator lamp flashes, but you are
unable to hear the BMW Assist response
center through the hands-free system, this
could indicate, for instance, that the hands-
free system is no longer operational. How-
ever, the BMW Assist response center may
then still be able to hear you.
Under certain conditions, an emergency
call is started automatically immediately
after a severe accident. The automatic
emergency call is not affected by the but-
ton being pressed.
For technical reasons, the emergency
call cannot be guaranteed under
unfavorable conditions.<

Giving and receiving assistance
184
Warning triangle*
The warning triangle can be found in the
luggage compartment on the left side.
Comply with legal requirements
requiring you to carry a hazard warn-
ing triangle in the vehicle.<
First-aid kit*
The first-aid kit is located in the filler ele-
ment of the rear seat backrest.
1.Press the button downwards
2.Remove the filler element in a forward
direction
3.Remove the first-aid kit.To refit the filler element, insert the
two steps in the strip and press back
the filler element. Make sure that you do
not damage the rear seat upholstery.<
Some of the articles contained in the
first-aid kit have a limited service life.
For this reason, check the expiration dates
of each of the items regularly and replace
any whose expiration dates have passed.
You can find replacements in any phar-
macy.
Comply with legal requirements requiring
you to carry a first-aid kit in the vehicle.<
Roadside Assistance*
The Roadside Assistance of the BMW
Group offers you breakdown assistance
around the clock, including on weekends
and public holidays.
The phone numbers of the Roadside Assis-
tance in your home country can be found in
the BMW Dealer Directory.
In the case of vehicles with BMW Assist or
TeleService, you can call the Roadside
Assistance of the BMW Group directly for
breakdown assistance via the Control Cen-
ter, refer to page 156.
Jump-starting
When your battery is discharged, you can
use two jumper cables to start your BMW
with power from the battery in a second
vehicle. You can also use the same method
to help start another vehicle. Use only
jumper cables with fully-insulated clamp
handles.
To avoid the risk of potentially fatal
injury, always avoid all contact with
electrical components while the engine is
running. Carefully adhere to the following
sequence, both to prevent damage to one
or both vehicles, and to guard against pos-
sible personal injuries.<

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Preparing
1.Check whether the battery of the other
vehicle has a voltage of 12 Volts and
approximately the same capacitance
in Ah. This information can be found on
the battery
2.Switch off the engine of the vehicle pro-
viding assistance
3.Switch off any consumer units in both
vehicles.
There must not be any contact
between the bodies of the two vehi-
cles, as otherwise there is a danger of
shorting.<
Connecting jumper cables
To avoid personal injury from sparks,
always observe this sequence when
connecting jumper cables.<
On your BMW, the so-called starting-aid
terminal in the engine compartment serves
as the battery positive terminal, also refer
to engine compartment essentials on
page 171. The symbol + is embossed on
the cover.
1.Fold open the cover of the BMW start-
ing-aid terminal. To do so, pull the tab
2.Attach one end of the jumper cable
plus/+ to the positive terminal of the
battery or a starting-aid terminal of the
vehicle providing assistance
3.Attach the second end of the cable to
the positive terminal of the battery or to
a starting-aid terminal of the vehicle to
be startedYour BMW has a special nut as body
ground or negative pole.
4.Attach one end of the jumper cable
minus/– to the negative terminal of the
battery or to an engine or body ground
of the vehicle providing assistance
5.Attach the second end of the cable to
the negative terminal of the battery or to
the engine or body ground of the vehi-
cle to be started.
Starting engine
1.Start the engine on the support vehicle
and allow it to run for several minutes at
increased speed
2.Start the engine on the other vehicle in
the usual way.
If the first start attempt is not success-
ful, 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 connection sequence
If required, have the battery inspected and
recharged at your BMW center.
Never use spray fluids to start the
engine.<
Towing and tow-starting
Always observe all applicable towing
laws and regulations.<
Never allow passengers to ride in a
towed vehicle for any reason.<

Giving and receiving assistance
186
Using tow fitting
The threaded tow fitting is stored in the tool
kit mounted on the inside of the luggage
compartment under the floor mat, refer to
page 178, and should always remain in the
vehicle. It can be screwed in at the front or
rear of the BMW.
To avoid damage to the tow fitting
and the vehicle, observe the follow-
ing: only use the tow fitting that comes with
the vehicle and screw it in as far as possi-
ble. Only use the tow fitting to tow on the
roadway. Avoid heavy lateral loading of the
tow fitting, e.g. do not lift the vehicle by the
tow fitting.<
Access to screw thread
Rectangular cover in bumper:
Press the arrow symbol of the cover.
Front
Rear
Being towed
Even if there is a failure in the electri-
cal system, make sure that the igni-
tion key is in position 1, as otherwise the
steering wheel could lock and it would be
impossible to steer the vehicle. There is no
power assist with the engine stopped. This then requires increased effort for braking
and steering. The active steering is deacti-
vated; when stopped and in the low speed
range greater steering wheel movements
are required.<
Switch on the hazard warning flashers
depending on the local regulations. If the
electrical system fails, mark the vehicle to
be towed, e.g. with a sign or warning trian-
gle in the rear window.
Vehicles with manual transmission
Gearshift lever in idle position
Vehicles with automatic
transmission
Selector lever in position N.
Do not exceed a towing speed of
45 mph/70 km/h and a towing dis-
tance of 90 miles/150 km, as otherwise the
automatic transmission may be dam-
aged.<
Vehicles with SMG Sequential
manual transmission
With the ignition switched on, engage
selector-lever position N, then switch off
the ignition.
Towing methods
In some countries, towing with tow bars or
ropes in public traffic is not permitted.
Familiarize yourself with all regulations on
towing in the respective country.
With tow bar
The towing vehicle may not be lighter
than the vehicle to be towed, as oth-
erwise it will not be possible to control
vehicle response.<
The tow fittings used should be on the
same side on both vehicles. Should it prove
impossible to avoid mounting the tow bar
at an offset angle, please observe the fol-
lowing:
>Clearance and maneuvering capability
will be strictly limited in corners

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>When mounted at an angle, the tow bar
will exert lateral forces, tending to push
the vehicle sideways.
Secure the tow bar on the tow fitting
only. Otherwise damage could result
on other vehicle parts.<
With tow-rope
When starting off in the towing vehicle,
make sure that the tow-rope is taut.
To avoid jerking and the associated
stresses on vehicle components
when towing, always use nylon ropes or
nylon straps. Secure the tow rope on the
tow fitting only. Otherwise damage could
result on other vehicle parts.<
With tow truck
Have the BMW transported with a tow
truck with a so-called lift bar or on a load
bed.
Do not lift vehicle by tow fitting or
body and chassis parts, as otherwise
damage may result.<
Tow-starting
Do not tow-start vehicles with an
automatic transmission.
Jump-starting, refer to page 184.<
Only tow-start vehicles with a catalytic
converter with the engine cold. It is better
to jump-start the engine, refer to page 184.
1.Switch on the hazard warning flashers,
comply with country-specific regula-
tions
2.Turn the ignition key to position 23.Engage the 3rd gear, vehicles with
SMG, see below
4.Have the vehicle tow-started with the
clutch pedal completely depressed and
slowly release the clutch. After the
engine starts, depress the clutch pedal
completely again
5.Stop at a suitable location, remove the
tow bar or rope and switch off the haz-
ard warning flashers
6.Have the vehicle checked.
Vehicles with SMG Sequential manual
transmission:
1.Tow-start in selector lever position N
2.Select sequential mode. The correct
gear will be selected and engaged
automatically.

Technical data
190
Technical data
Engine specifications
Weights
Never exceed either the approved
axle loads or the gross vehicle weight.
645Ci
Displacement
Number of cylinderscu in/cmm268.4/4,398
8
Maximum output
at engine speedhp
rpm325
6,100
Maximum torque
at engine speedlb ft/Nm
rpm 330/450
3,600
645Ci Coupe 645Ci Convertible
Curb weight
with manual transmission
with automatic transmission / SMGlbs./kg
3,781/1,715
3,792/1,7204,178/1,895
4,189/1,900
Approved gross weight
with manual transmission
with automatic transmission / SMGlbs./kg
4,619/2,095
4,630/2,1004,960/2,250
4,971/2,255
Load lbs./kg 838/380 772/350
Approved front axle load lbs./kg 2,271/1,030 2,381/1,080
Approved rear axle load lbs./kg 2,513/1,140 2,381/1,080
Luggage compartment capacity
Convertible: with convertible top com-
partment floor up, refer to page 32cu ft/l 15.9/450
–10.6/300
12.4/350

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Capacities
Notes
Fuel tank
Reservegal/liters
gal/litersapprox. 18.5/70
approx. 2.1/8Fuel specification: page 163
Window and headlamp
washer system quarts/liters approx. 5.3/5For details: page 62
Engine oil and filter change quarts/liters 8.5/8 BMW High Performance
Synthetic Oil
Oil grades: page 172