sensor BMW 328I 2000 User Guide

105n
IndexDataTechnologyRepairsCar careControlsOverview
Clothes hooks:
When suspending clothing from the
hooks, be sure that they will not ob-
struct the driver's vision. Do not hang
heavy objects on the hooks. If you do
so, such objects could pose the risk of
personal injury during braking or eva-
sive maneuvers. exhaust emissions, and is designed for
use with unleaded fuel only.
Even minute quantities of lead would be
enough to permanently damage both
the catalytic converter and the system
oxygen sensor.
To ensure efficient, trouble-free engine
operation and avoid potential damage:
>Be sure to comply with the scheduled
maintenance requirements.
>Fill the fuel tank well before it is
empty.
>Tow-start only when the engine is
cold. If you attempt to tow-start with
a warm engine, unburned residual
fuel in the catalytic converter could
ignite and cause damage. It is better
to jump-start the vehicle with outside
assistance.
>Avoid other situations in which the
fuel is not burned, or burns incom-
pletely, such as engaging the starter
frequently or for extended periods, or
repeated start attempts in which the
engine does not start (stopping and
restarting an engine which is running
properly does not present a problem).
Never allow the engine to run with
any of the spark plug cables discon-
nected.Be sure to comply with the in-
structions above to prevent un-
burned fuel from reaching the catalytic
convertor. If you do not, the catalytic
converter could respond by overheat-
ing, leading to serious damage.
Extreme temperatures occur at the cat-
alytic converter on this and every cata-
lyst-equipped vehicle. Heat shields are
installed adjacent to some sections of
the exhaust system. Never remove
these shields; do not apply undercoat-
ing to their surfaces. When driving,
standing at idle, and parking the vehi-
cle, take extra care to avoid contact be-
tween the exhaust system and flamma-
ble materials (grass, hay, leaves, etc.).
Such contact could lead to a fire, re-
sulting in serious personal injury and
property damage.

132n
Washing your car You can have your BMW washed in
an automatic car wash, even when it
is new. Car wash systems that do not
employ brushes are preferable.
Wipe away tough dirt and loosen and
remove dead insects before washing
the car.
In order to avoid spots, do not wash the
vehicle when the hood is warm, or dur-
ing or immediately after exposure to
strong sunlight.
When using an automatic car wash, be
sure that:
>The car wash system is suited for the
dimensions of your vehicle.
>No damage will occur on vehicles
with attached body accessories (such
as spoilers or antennas). Consult the
car wash operator if necessary.
>The wheels and tires of your vehicle
cannot be damaged by the convey-
ance devices of the car wash system.
>The vehicle is cleaned with minimum
brush pressure, and that ample water
is available for washing and rinsing.Vehicles with rain sensor
*:
Clean the windshield regularly. Wax
from automatic car washes or insects
can cause malfunctions in the function
of the rain sensor
*.
Turn the rain sensor
* off (refer to
page 69) when passing through an
automatic car wash. Failure to do so
could result in damage caused by unin-
tended wiper activation.<
Parts of the car that are inaccessible to
the automatic washer Ð such as door
sills, door and hood edges, etc. Ð
should be cleaned by hand.
In the winter months, it is especially
important to be sure that the car is
washed on a regular basis. Large quan-
tities of dirt and road salt are difficult to
remove, and they also cause damage
to the vehicle.
If spray wands or high-pressure
washers are used, be sure to
maintain an adequate distance between
the spray source and the vehicle's sur-
face. Inadequate distance and exces-
sive pressure can damage or weaken
the finish, making it more susceptible to
subsequent attack. In addition, mois-
ture could penetrate to vehicle compo-
nents, leading to long-term damage.<
When cleaning the headlamps,
please observe the following:
>Do not clean by wiping with a dry
cloth (this causes scratches). Never
use abrasives or strong solvents.
>Remove dirt and contamination (such
as insects) by soaking with BMW Car
Shampoo and then rinsing with plenty
of water.
>Always use a deicer spray to remove
accumulated ice and snow Ð never
use a scraper.<
After washing the car, apply the
brakes briefly to dry them. Braking
efficiency might otherwise be reduced
by the moisture and the brake rotors
could also be corroded.<
Caring for your car

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IndexDataTechnologyRepairsCar careControlsOverview
Caring for your carPlastic components, vinyl upholstery,
headliners, lamp lenses, the clear cover
of the instrument panel and compo-
nents with a sprayed dull black surface
can be cleaned with water (add plastic
shampoo as required). Do not allow
moisture to soak through the seats or
headliner. Never use solvents such as
lacquer thinner, heavy-duty grease re-
mover, fuels, or similar substances.
Rubber components should be cleaned
with water only; a rubber treatment or
silicone spray may also be applied.
Clean the wiper blades with soapy
water. The wiper blades should be re-
placed twice a year Ð before and after
the cold season. This is especially im-
portant for vehicles with a rain sensor
*.
Use only wiper blades approved
by BMW.<
Do not remove safety belts to clean
them. Clean them with mild soapy
water only. Do not use chemicals or dry
cleaners to clean safety belts, since this
could damage the belt fabric.
After cleaning, never allow the inertia
reel to retract the belts until they are
completely dry. Dirty safety belts pre-
vent the inertia reel mechanism from
retracting the strap properly, and thus
constitute a safety hazard.
Heavily soiled floor carpets and mats
*
can be cleaned with an interior cleaner.
The floor mats can be removed from
the vehicle for cleaning.
Use only a damp cloth to clean trim
panels made of real wood
* and other
parts constructed of real wood
*. Follow
up by drying with a soft cloth.
Use cleaning and car-care
products that you can obtain at
your BMW center.<
Care of upholstery materials Depressions in the upholstery that re-
sult from everyday use can be brushed
smooth by brushing against the nap
with a lightly dampened brush.
The tendency of the pile to lie in a par-
ticular direction on velour upholstery is
not a quality defect. Just as with home
textiles or clothing, this cannot be
avoided.
Lint on upholstery materials, rubbed-in
fabric or suede residues can be re-
moved with a lint brush or Velcro¨
brush. A cleaning glove is available for
especially "stubborn" lint. Stains and
fairly large areas of dirt should be
cleaned off without delay, using luke-
warm water and an interior cleaner,
stain remover or appropriate cleaning
fluid. Brush the fabric afterwards to re-
store its appearance.
If the vehicle will be stored for an ex-
tended period or if it is exposed to in-
tense sunlight, cover all the seats or the
windows to prevent fading.
Use cleaning and car-care
products that you can obtain at
your BMW center.<

Overview
Controls and features
Operation, care
and maintenance
Owner service procedures
Technical data
Index Advanced technology
161n
IndexDataTechnologyRepairsCar careControlsOverview
Adaptive Transmission Control
(ATC)162
Airbags163
Dynamic Stability Control
(DSC)163
Radio reception164
Safety belt tensioner164
Interior rearview mirror
with automatic dimming
feature165
Rain sensor166
Tire Pressure Control (RDC)167
Self-diagnostics168
Xenon lamps169
Technol-

163n
IndexDataTechnologyRepairsCar careControlsOverview
Deceleration sensors continuously
monitor the acceleration forces acting
upon the vehicle. If, as the result of a
frontal collision, a deceleration is
reached at which the protection of the
safety belts alone is no longer ade-
quate, the gas generators of the driver
and passenger-front airbags are ignited.
However, the passenger-side airbag is
only triggered if an additional sensor
has recognized that the passenger seat
is occupied.
In the event of a side collision, the Head
Protection and side airbags in the front
or rear
* are triggered if necessary.
390de319
The airbags located under the marked
covers inflate and unfold in a matter of
a few milliseconds. In this process, they
tear through the designed separation
points of the upholstered covers or
press them out.
Because the inflation process must be
virtually instantaneous, it is necessarily
accompanied by a certain amount of
ignition and inflation noise. The gas
required to inflate the airbags is not
dangerous, and the smoke associated
with it dissipates.
The entire process is completed within
fractions of a second.Highly sensitive sensors monitor the
number of revolutions of the wheels.
When equipped with DSC, they also
monitor steering angle, lateral accelera-
tion, brake pressure and the movement
of the vehicle around its vertical axis.
If differences in the wheel speeds occur,
the system counteracts the danger of
wheelspin by reducing engine torque.
If necessary, the system also responds
with additional application of the brakes
at the rear wheels.
If the system detects an instability in the
vehicle's condition, the braking action
can also be directed to the front wheels
by the DSC in order to help stabilize the
vehicle.
You may need some time to become
accustomed to this system's interven-
tion. However, it provides optimum
drive force and driving stability.
The braking intervention may be ac-
companied by sounds specific to the
system.
Airbags DSC

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IndexDataTechnologyRepairsCar careControlsOverview
Interior rearview mirror with automatic dimming feature
*
The interior rearview mirror with auto-
matic dimming feature reduces blinding
from following traffic by adapting the
intensity of the reflected images to cor-
respond to levels of light registered by
the unit's sensors. The mirror reverts to
its undimmed setting as soon as the
light source disappears. One lamp sen-
sor is mounted on the front of the mirror
housing. This sensor, which is directed
forward, measures light intensity in the
area ahead of the vehicle. The second
sensor is integrated within the mirror's
glass. The electronic control system
compares the light intensity from front
and rear. The difference provides the
basic parameter used to modulate an
electrical current and induce chemical
changes in a semisolid layer incorpo-
rated in the lens.390de113
The semisolid reacts chemically to this
electrical current, thus providing dim-
ming of the mirror through an infinitely-
variable range (electrochromic technol-
ogy).
As a result, it is no longer necessary to
dim the mirror manually, and the driver
can concentrate completely on traffic
conditions.

166n
Rain sensor
*
Depending on the degree of wetness
on the windshield, the rain sensor con-
trols the operation of the windshield
wipers.
Infrared light is carried along the sur-
face of the windshield in an optical con-
ductor in such a manner that it is re-
flected completely when the windshield
is dry. The quantity of reflected light is
measured.
If there is moisture on the glass, the
amount of light reflected is reduced
since the infrared light at the surface of
the windshield can escape. The quan-
tity of reflected light is thus a means of
gauging the degree of wetness on the
windshield.390de133
When the system is set to the "Intermit-
tent" wiper speed, the wipers react im-
mediately Ð if water is splashed onto
the windshield by vehicles traveling
ahead of you, for example. As a result,
the rain sensor provides a contribution
to driving safety and comfort.

167n
IndexDataTechnologyRepairsCar careControlsOverview
Tire Pressure Control (RDC)
*
This system regularly checks tire pres-
sure and monitors all four tires even
while driving, so you don't have to.
Behind the valve stem in every wheel,
there is an electronic chip that is de-
signed for severe-duty applications and
long service life. It contains a pressure
sensor, a transmitter and a battery. The
pressure is measured in extremely short
time intervals and then transmitted by a
radio signal. If an irregularity is detected,
the transmission rate is increased. 460de169
Near every wheel is an antenna in the
body that receives the signal from the
wheel. A central electronics system
evaluates the quadruple signals and for-
wards any changes.
The RDC provides an important contri-
bution to driving safety.

Everything from A to ZGlove compartment lamp
bulb replacement148
Gross vehicle weight174HHandbrake63
Handsfree system95
Hazard warning flashers25
Hazard warning triangle25
Head restraint48
Headlamp covers,
care132, 143
Headlamp flasher83
Headlamp washer
system124, 175
Headlamp washers70
Heated seats91
Heavy loads99
Height173
HiFi system Ð harman
kardon92
High beams23, 68, 83
bulb replacement143
Hood release120
Horn17
Hubcap150IIce warning76
Icy roads76
Identification, tires116Ignition key32
Ignition lock61
Indicator lamps20
Inflated pressure27, 113
Inflation pressure
monitoring80, 167
INSPECTION74
Installing a child restraint
system60
Instrument cluster18
Instrument lighting82
Instrument panel18
Interaxle tire rotation115
Interface socket96
for Onboard
Diagnostics139
Interference
cellular phones112
Interior lamps36, 83
bulb replacement147
remote control36
Interior motion sensor42
Interior rearview mirror52
automatic dimming
feature53, 165
Interlock61
Intermittent wipe68
JJack149
Jump-starting157
KKey Memory53
Keys32
with remote control32LLAMPS ON warning82
Lashing eyes99
Leather care136
Length173
License plate lamp
bulb replacement147
Light switch82
Light-alloy wheels118
Lighter96
Load-securing devices99
Louvers86
Low beam headlamps82
Low beams
bulb replacement143
Lug bolts150
Lug wrench149
Luggage compartment41
capacity174
floor mat41
floor panel41
remote control37
Luggage compartment
lamps
bulb replacement148Luggage compartment
lid39
emergency release39
securing separately39
Luggage compartment
lighting39
Luggage rack100
Lumbar support49
MM+S tires117
Maintenance74, 131
Malfunction displays75
Manual transmission64
Manually controlled
recirculated-air89
Memory50
MFL (Multifunction steering
wheel)24
Microfilter90, 155
Mirror memory50
Mirrors52
Mobile phones112
Modifications,
technical6, 138
Multifunction steering wheel
(MFL)24NNeckrest48

Everything from A to Z
183n
IndexDataTechnologyRepairsCar careControlsOverview
OOBD interface socket139
Obstruction protection44
Odometer73
Oil
capacity175
consumption125
dipstick125
quality126
specifications126
viscosity126
Oil additives125
Oil change intervals, see the
Service and Warranty
Information Booklet
Oil filter change175
Oil level
check125
indicator lamp20
Oil pressure, indicator
lamp20
OILSERVICE74
Onboard computer76
Onboard tool kit142
Outside temperature
display76PPaint blemishes133
Paint, care133
Paintwork, minor
repairs134Paintwork, waxing134
Park Distance Control
(PDC)78
Parking brake63
Parking help78
Parking lamps83
Parking, winter111
PDC (Park Distance
Control)78
Performance172
Pocket flashlight92
Pollen90
Power seat49
Power steering111
Power windows44
safety switch45
Pressure monitoring,
tires80, 167
Pressure, tires27, 113
RRadiator175
Radio
refer to the separate
Owner's Manual
Radio Data System
(RDS)164
Radio reception112, 164
Rain sensor69, 166
RDC (Tire Pressure
Control)80, 167
RDS (Radio Data
System)164Reading lamps84
Rear backrest, folding97
Rear lamps145
Rear window
defroster70, 90
Rearview mirror52
Reclining seat47
Refueling26
Remote control35
Removing condensation,
windows89
Replacement key32
Reporting safety defects7
Restraint system59
Reverse17, 64
Roller blind, sun
protection91
Roller sun blind91
Roof load capacity174
Roof-mounted luggage
rack100
Rubber parts110
SSafety belt tensioner164
Safety belts54
height adjustment54
Safety feature44
Safety lock buttons38
Seat
mechanical47
power49
Seat adjustment47Seat heating91
Seat memory50
Securing cargo99
Securing loads99
Selector lever, automatic
transmission65
Self-defrosting mirrors52
Self-diagnostics168
Service and Warranty
Information Booklet131
Service Interval
Display74, 131
Shiftlock65
Side airbags56
Side impact Head Protection
System56
Side lamps82
bulb replacement144
Ski bag98
Skid control111
Sliding/Tilt sunroof45
closing following an
electrical malfunction156
convenience operation34
Slippery roads110
Snow chains110, 118
Space-saver spare tire149
Spare key32
Spare tire149
Spare wheel149
Spark plugs176
Speaker95
Speed control71