catalytic converter BMW 745LI SEDAN 2002 Owners Manual

Driving
62
Starting the engine
Do not allow the engine to run in
enclosed spaces. The exhaust gases
contain carbon monoxide, an odorless and
colorless, but highly toxic gas. Breathing
the exhaust gases poses an extreme health
risk, and can lead to unconsciousness and
death.
Never leave the vehicle parked with the
engine running, as it would then pose a
potential safety hazard.<
1.Insert the remote control unit all the way
into the ignition lock
2.Depress the brake pedal
3.Maintain pressure on the brake pedal
and briefly press the start / stop button.
You can release the brake pedal as soon as
the engine starts.
Your BMW is equipped with the
convenience starting feature. After
depressing the brake pedal, all you need to
do is briefly press the start / stop button.
The system responds by automatically
engaging the starter and allowing it to run
until the engine starts, after which it then
disengages automatically.
The automatic starting mode will not
operate or will be canceled if the battery
voltage is low. It is then possible to start the
engine using electrical power from an
outside source, refer to page 187.
The engine starts immediately in response
to pressure on the button at speeds of
roughly 3 mph (5 km/h) and above. It is not
necessary to depress the brake pedal.<
Do not allow the engine to warm up by
leaving it running while the vehicle remains stationary. Instead, begin to drive immedi-
ately at a moderate engine speed.
Under the following conditions you should
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
>During cold starts at high altitudes, of
roughly 3,300 ft (1000 m) and above, and in
extreme cold, at temperatures of approxi-
mately +5 7 (Ð15 6) and below.
Refrain from starting the vehicle
repeatedly at brief intervals, and
avoid an excessive number of starting
attempts if the vehicle fails to start;
repeated activation of the starter over an
extended period would allow unburned or
only partially combusted fuel to enter the
catalytic converter, where it can cause
overheating and damage to the unit.<
Switching off engineWith the vehicle stationary, briefly press the
start / stop button. This also activates the
radio mode.
Should exceptional circumstances
render it necessary for you to switch
off the engine while the vehicle is moving,
maintain pressure on the start / stop button
for approx. 1 second.
If you maintain pressure on the start / stop
button for longer than two seconds while
switching off the ignition, the remote
control unit will be ejected.<
Always remove the remote control
unit from the ignition lock before
leaving the vehicle.< Parking brake The concept Your BMW is equipped with an electro-
mechanical parking brake.
The parking brake is primarily intended to
prevent the vehicle from rolling while
parked.

Everything under control
82
Info Display screen contentsThe display sequence:
>Fuel gauge, see next column
>Cruising range and remaining distance
to destination83.
The display sequence:
>Odometer77 >Energy Control/ Current fuel
consumption83
>Average fuel consumption83
>Average speed83
>Time of arrival83.
Maintain pressure on the button 1 to
cancel the display from the computer.
Press the button again to return to the last
display.
It will not be possible to cancel the display
if the fuel level has fallen into the reserve
range or if a Check Control status report is
currently on the screen.
Press the button again to view the last
display.<
Fuel level display The fuel gauge mode appears automati-
cally once the fuel level falls into the
reserve range. The word "Reserve"
appears at the same time, indicating that
approx. 2.6 gallons (10 litres) of fuel remain
in the fuel tank.
It will not be possible to cancel the
onboard computer display once the
fuel level drops into the reserve range.
However, you can still request a display of
the cruising range. Computer, refer to
page 81.<
Tank capacity: approx. 19.4 gallons
(88 litres).
If the tilt of the vehicle varies (when you are
driving in mountainous areas, for example),
the needle may fluctuate slightly.
Always remember to refuel early:
attempts to continue driving to the
last drop can result in damage to the
engine and/or catalytic converter.< Cruising range Displays the estimated cruising range
available with the remaining fuel. The
system calculates the cruising range based
on operating conditions and the amount of
fuel remaining in the tank. The basis for the
calculations is the average fuel consump-
tion over the preceding 20 miles (30 km).

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83
To avoid serious damage to the engine or
catalytic converter, always refuel as soon
as possible once your cruising range falls
to below 30 miles (50 kilometers).
When refueling you must add at least
approx. 1 1/3 gallons (5 litres) before the
computer will register the additional fuel. Distance to destination When you enter a destination in the naviga-
tion system or manually enter a distance in
the computer prior to departure, the
system can also display the distance
remaining to your destination, refer to
pages 126 and 84.
The system automatically adopts the
distance to your destination using the route
recommended by the navigation system.
When you enter a destination in the
navigation system, any manual
entries will be overwritten no later than
once 1640 feet (500 meters) of the calcu-
lated distance have elapsed.< Energy Control/
Current fuel consumption Shows your current fuel consumption rate
in mpg Ð in litres/100 km on Canadian vehi-
cles. This allows you to see whether your
current driving style is conducive to fuel
economy with minimum exhaust emis-
sions.
When the vehicle is stationary the display
goes to the maximum reading Ð zero on
Canadian models. Average fuel consumption The average fuel consumption is calculated
for the time during which the engine is
running.
You can use the Control Display to view
your fuel consumption rate over two
different distances, refer to Computer or
Trip computer.
Average speed Periods with the vehicle parked and the
engine off are not included in the calcula-
tions of average speed. Time of arrival A display of your estimated time of arrival is
available whenever you enter a destination
in the navigation system, refer to page 126,
or enter the distance manually in the
computer, refer to page 84, prior to depar-
ture.
This function is only available if the
time in the Control Display has been
correctly set, refer to page 86.< Control Display screen contents You can activate the computer function at
any time by selecting it from the "OB data"
menu.
The computer furnishes you with a choice
between two display options.Computer >Time of arrival
>Distance to destination.
Enter a destination in the navigation
system, or enter a distance in the computer
manually, refer to pages 126 and 84
>Cruising range
>Average fuel consumption
>Average speed.
You can reset calculations of both
average speed and average fuel
consumption to zero. Select the menu
entry and confirm.<

Things to remember when driving
118
Things to remember when drivingBreak-in procedures To ensure that your vehicle continues to
furnish optimal economy of operation
throughout an extended service life, we
request that you devote careful attention to
the following section. Engine and differential The first 1,200 miles (2,000 km):
During this initial period you should attempt
to avoid constant, steady-state operation
and vary both vehicle and engine speeds
as often as possible. Until the break-in
period has been completed you should
also refrain from exceeding the following:
>4500 rpm and 105 mph (170 km/h)
Always obey all official speed limits.
Avoid full-throttle operation and use of the
transmission's kickdown mode during
these initial miles.
After the first 1,200 miles (2,000 km) you
can gradually increase both engine and
vehicle speeds to their respective maxima.
You should also comply with these break-in
procedures if the engine or differential is
replaced at a later point. Tires Due to technical factors associated with
their manufacture, tires do not achieve their
full traction potential until after an initial
break-in period. We thus urge you to drive
with extra care during the first 200 miles
(300 kilometers). Brake system Brakes require an initial break-in period of
approx. 300 miles (500 km) to achieve
optimal contact and wear patterns
between brake pads and rotors.
General driving notes High temperatures
Extreme temperatures occur at the
catalytic converter on this and every
catalyst-equipped vehicle. Do not remove
the heat shields installed adjacent to
various sections of the exhaust system,
and never apply undercoating to them.
When driving, standing at idle and while
parking take care to avoid possible contact
between the hot exhaust system and any
highly flammable materials such as hay,
leaves, grass, etc. Such contact could lead
to a fire, and with it the risk of serious prop-
erty damage as well as personal injury.<
Parking the vehicle Condensation forms in the air conditioner
system during operation, and then exits
under the vehicle. Traces of condensed
water under the vehicle are thus normal.Aquaplaning
When driving on wet or slushy roads,
reduce road speed. If you do not, a
wedge of water can form between tires and
road surface. This phenomenon is referred
to aquaplaning, and is characterized by a
partial or complete loss of contact between
tires and road surface, ultimately under-
mining your ability to steer and brake the
vehicle.<
Water-covered streets
Do not drive through water on the
road if it is deeper than 1 foot (30 cm),
and then only at walking speed at the most.
Otherwise, the vehicle's engine, the elec-
trical systems and the transmission may be
damaged.<

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169
Fuel specifications The engine uses lead-free gasoline only.
Required fuel:
>Premium Unleaded Gasoline,
min. 91 AKI.
AKI = Anti-Knock Index.
Do not use leaded fuels. The use of
leaded fuels will cause permanent
damage to the system's oxygen sensor and
the catalytic converter.<

Rules and regulations
180
Rules and regulationsCalifornia Proposition 65
Warning California laws require us to state the
following warning:
Engine exhausts, some of its constit-
uents, and certain vehicle compo-
nents contain or emit chemicals known to
the State of California to cause cancer and
birth defects or other reproductive harm.< OBD connector The Onboard Diagnostic (OBD) interface
socket is located on the left of the driverÕs
side under the instrument panel and under
a cover.
The cover has the letters OBD on it.
The purpose of the OBD system is to
ensure proper operation of the emission
control system for the vehicleÕs lifetime.
The system monitors emission-related
components and systems for deterioriation
and malfunction.
An illuminated lamp informs you of
the need for service, not of the need
to stop the vehicle. However, the
systems should be checked by your BMW
center at the earliest possible opportunity.
Under certain conditions, the indicator will
blink or flash. This indicates a rather severe
level of engine misfire. When this occurs,
you should reduce speed and consult the nearest BMW center as soon as possible.
Severe engine misfire over only a short
period of time can seriously damage emis-
sions control components, especially the
catalytic converter.
When the fuel filler cap is not properly
tightened, the OBD system can
detect the vapor leak and the indicator will
light up. If the filler cap is subsequently
tightened, the indicator should go out
within a few days.<