2001 BMW 325I sensor

Contents

Owner service procedures
Advanced technology
Technical data

Replacement procedures:

Onboard tool kit152
Windshield wiper blades152
Lamps and bulbs153
Changing a wheel159
Battery162
Fuses164
Microfilter/Activated-charcoal
filter165

In case of electrical
malfunction:

Fuel filler door166
Sliding/Tilt sunroof166
Tailgate166

Assistance, giving and
receiving:

Jump-starting167
Towing the vehicle168Airbags172
Adaptive Transmission Control
(ATC)173
Automatic Stability Control plus
Traction (ASC+T)/Dynamic
Stability Control (DSC)173
Radio reception174
Four-wheel drive175
Safety belt tensioner175
Interior rearview mirror with
automatic dimmer176
Rain sensor177
Tire Pressure Control (RDC)178
Self-diagnostics179
Xenon lamps180Engine data184
Dimensions185
Weights186
Capacities187
Electrical system188
Drive belts188

28n
Fuel specifications Tire inflation pressure 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 perma-
nent damage to the system's oxygen
sensor and the catalytic converter.<
You will find the inflation pressures on
the inside door pillar (visible with door
open).Check tire pressures On the next page you will find all the tire
pressure and ambient air temperature
specifications stated in the units usually
used in your country (psi; kilopascal).
For vehicles with Tire Pressure Control
(RDC):
After correcting the tire inflation pres-
sure, reactivate the system. Refer to
page 85.460de163
Check tire inflation pressures Ð
including the space-saver spare
wheel, or spare wheel Ð regularly, at
least every two weeks and before
beginning any extended driving. Incor-
rect tire pressure can otherwise lead to
tire damage and accidents.
Inflate the spare tire to the highest tire
inflation pressure specified for your
vehicle.<

36n
Opening and closing Ð from the outside To unlock the vehicle Press button 1.
Press the button once to unlock the
driver's door only; press a second time
to unlock all remaining doors as well as
the rear window and fuel filler door. Convenience opening mode Press and hold button 1. The power
windows and sliding/tilt sunroof are
opened.463de025
Locking and securingPress button 2.46cde057
Turning on the interior lampsAfter locking the vehicle, press button 2
again.Switching off the tilt alarm sensor
*
and interior motion sensor
*
Press button 2 again immediately after
locking.
For additional information, refer to
page 42.46cde057

41n
IndexDataTechnologyRepairsCar careControlsOverview
Alarm system
*
The conceptThe vehicle alarm system responds:
>When a door, the hood or the tailgate
is opened.
>To movement inside the vehicle
(interior motion sensor).
>To a change of the vehicle's tilt Ð if
someone attempts to steal the wheels
or tow the vehicle without authoriza-
tion, for example.
>To interruption of battery voltage.
The system responds to unauthorized
vehicle entry and attempted theft by
simultaneously activating the following:
>Sounding an acoustical alarm for
30 seconds.
>Activating the hazard warning flashers
for approx. five minutes.
>Flashing the high beams flash on and
off in rhythm with the hazard warning
flashers.
To activate and deactivate the
alarm systemWhen the vehicle is locked or unlocked
by using a key or the remote control,
the alarm system is also armed or
disarmed at the same time.
The interior motion sensor and tilt alarm
sensor are activated 30 seconds after
the last locking operation.
If the alarm system has been armed
correctly, the hazard warning flashers
flash once.
You can have one signal set as
acknowledgment when arming
and disarming.<
You can also open the rear window
when the system is armed by pressing
button 3 of the remote control (refer to
page 37). When it is closed, the rear
window is once again secured.
Indicator lamp displaysThe indicator lamp is located under the
inside rearview mirror.
>The indicator lamp flashes
continuously: the system is armed.
>The indicator lamp flashes when it
is armed: doors, the hood, tailgate
or rear window have not been prop-
erly closed. Even if you do not close
the alerted area, the remaining areas
are deadlocked, and the indicator
lamp flashes continuously after
10 seconds. However, the interior
motion sensor is not activated.
>The indicator lamp goes out when the
system is disarmed: no manipulation
or attempted intrusions have been
detected in the period since the
system was armed.463us010

42n
Alarm system
*
>The indicator lamp flashes for
10 seconds when the system is
disarmed: an attempted entry has
been detected in the period since the
system was armed.
Following triggering of an alarm, the
indicator lamp will flash continuously.
Avoiding unintentional alarmsThe tilt alarm sensor and interior motion
sensor may be switched off at the same
time. Doing this prevents a false alarm
from being triggered (in garages with
elevator ramps, for instance), or when
the vehicle is transported by trailer or
train:
Lock the vehicle (= arm the system)
twice. Press button 2 on the remote
control twice in succession or lock the
vehicle twice with the key (refer to
page 36).
The indicator lamp lights up briefly and
then flashes continuously. The tilt alarm
sensor and the interior motion sensor
are deactivated as long as the system is
armed.
Reset the alarm system in order to
reactivate both the tilt sensor alarm
system and interior motion sensor.
Interior motion sensorThe transmitter and receiver of the inte-
rior motion sensor are located in a trim
panel in the vehicle's roof.
In order for the interior motion sensor
to function properly, the windows and
sliding/tilt sunroof must be completely
closed.
However, be sure to deactivate the
interior motion sensor (refer to the
previous column "Avoiding uninten-
tional alarms"), when you wish to leave
the windows or the tilt/sunroof open.460de159

68n
Turn signal indicator/Headlamp flasher Washer/Wiper system 1 High beams
(blue indicator lamp)
2 Headlamp flasher
(blue indicator lamp)
3 Turn signal indicator (green indicator
lamp accompanied by periodic
clicking sound from the relay)
If the indicator lamp and the clicking
from the relay are both faster than
normal, one of the turn indicators has
failed.460de085
To signal brieflyPress the lever up to but not beyond
the detent. It then returns to the center
position when released.
0 Wipers retracted
1 Intermittent mode or rain sensor
2 Normal wipe
3 Fast wipe
4 Brief wipe
5 Cleaning windshield
6 Rotary dial for control of the wipe
interval or the sensitivity of the rain
sensor
Rear window wiper7 Intermittent mode
8 Cleaning rear window463de010

69n
IndexDataTechnologyRepairsCar careControlsOverview
Washer/Wiper system1 Intermittent mode or rain
sensor
*
Intermittent mode:
You can use rotary dial 6 to select from
four wipe intervals.
In addition, the wipe interval automati-
cally adapts to variations in road speed.
Rain sensor:
The rain sensor is positioned on the
windshield, directly ahead of the inte-
rior rearview mirror. When the rain
sensor is activated, the windshield
wiper is controlled automatically,
depending on the degree of wetness of
the windshield (in both snow and rain).
You do not have to be concerned with
switching the windshield wiper on or off
or adjusting the wipe interval between
intermittent and full wipe. Instead, you 463de010
can concentrate fully on the traffic
conditions. This is especially important
under adverse weather conditions.
To activate the rain sensor:
From ignition key position 1 and up,
move the lever to position 1. The wipers
travel once across the windshield,
regardless of the weather.
You can leave the lever permanently in
position 1. It is then only necessary to
activate the rain sensor from ignition
key position 1 and up. To do this,
>turn rotary dial 6 briefly or
>use cleaning windshield 5.
To modify the sensitivity of the rain
sensor:
Turn rotary dial 6.
Deactivating the rain sensor:
Put lever in position 0.
Turn the rain sensor off when
passing through an automatic car
wash. Failure to do so could result in
damage caused by undesired wiper
activation.<
2 Normal wiper speedWhen the vehicle is stationary, the
wipers switch automatically to intermit-
tent wipe (not on vehicles with rain
sensor).3 Fast wiper speedWhen the vehicle is stationary, the
wipers operate at normal speed (not on
vehicles with rain sensor).5 Cleaning windshieldThe system sprays washer fluid against
the windshield and activates the wipers
for a brief period.
If you only pull the lever briefly, the
system sprays washer fluid onto the
windshield without activating the
wipers.

78n
The conceptThe PDC assists you when you are
parking. A signal warns you of the real
distance to an obstacle. To do this, four
ultrasonic sensors in the rear bumper
measure the distance to the nearest
object. The range for the sensors at the
two rear corners ends approx. 2 ft
(60 cm) from the bumper. The range for
the two center sensors is approx. 4.9 ft
(1.50 meters) wide.
The system starts to operate automati-
cally about one second after you select
"Reverse" with the ignition key in posi-
tion 2. PDC is deactivated when you shift
back out of reverse.
Acoustical signalsThe distance to the nearest object is
indicated by a tone sounding at various
intervals. As the distance between
vehicle and object decreases, the inter-
vals between the tones become shorter.
If the distance between the vehicle and
a detected object is less than 1ft
(30 cm), then a continuous tone will go
off.
The warning signal is canceled after
approx. three seconds if the distance to
the obstacle remains constant during
this time (if you are moving parallel to
a wall, for instance).
System malfunctions will be indicated
by a continuous high-pitched tone
when the system is activated the first
time. Please refer the problem to your
BMW center.The PDC does not remove the
driver's personal responsibility for
evaluating the distance between the
vehicle and any obstacles. Even when
sensors are involved, there is a blind
spot in which objects cannot be
detected. This applies especially in
those cases where the system
approaches the physical limits of ultra-
sonic measurement, as occurs with tow
bars and trailer couplings, and in the
vicinity of thin and painted objects.
Certain sources of sound, such as a
loud radio, could drown the PDC signal
tone.<
Keep the sensors clean and free
of ice or snow in order to ensure
that they continue to operate effec-
tively.
Do not apply high-pressure spray to the
sensors for a prolonged period of time.
Maintain a distance of more than 4 in
(10 cm).<
Park Distance Control (PDC)
*