2001 BMW 325Ci CONVERTIBLE check engine

192n
Tire Pressure Control* Self-diagnostics This system regularly checks tire pres-
sure and monitors all four tires even
while driving, so you do not have to.
Behind the valve stem in every wheel,
there is an extended-life electronic chip
that 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.
Located near each wheel and
embedded in the vehicle body is an
antenna that receives signals from the
wheel. A central electronics system
evaluates the quadruple signals and
forwards any changes.
The RDC provides an important contri-
bution to driving safety.46cde078
All
of the important electrical and elec-
tronic systems in the vehicle are tested
regularly and automatically Ð the driver
does not have to perform any extra
operations or adjustments.
The indicator lamps come on brießy
after the ignition has been turned on, for
example.
While you are driving, the functional
status of the actuator motors (for the
windshield wipers, power windows,
seats, etc.) is constantly being analyzed
by electrical measurements in the relays.
In the same manner, the electrical
resistance of the airbag ignition genera-
tors and all of the remaining airbag
components is measured at all times. Any
fault in this system would be detected
immediately by a current ßuctuation that 46cde052
would necessarily accompany it.
The fault
would be indicated immediately by the
airbag warning lamp.
Even after you shut off the engine, the
overall functional status of your vehicle is
monitored. For example, all of the ßaps of
the heating and ventilation system travel
to the nearest limit position. This action
ensures that the system will be able to
provide defrosting, regardless of other
circumstances, e. g. if a malfunction in the
air conditioner/automatic climate control
system
* should occur during the night
while the vehicle is parked.
A calibration cycle runs every tenth time
the engine is shut off. During this cycle,
the actuator motors of all the heating and
ventilation ßaps travel to their limit stops
in both directions. The limit positions and
the return travel paths are checked in this
manner in order to ensure that appro-
priate adjustments for the operating
elements can be made at any time.
You will hear the sounds of the air ßaps as
the air conditioner/automatic climate
control* carries out its self-diagnostic
functions after the ignition has been shut
off. All of the other self-diagnostics func-
tions operate silently in the background.
Any possible faults detected during these
self-diagnostics can be read out and
corrected by your BMW center
during the
next regularly scheduled maintenance.

Everything from A to Z
205n
IndexDataTechnologyRepairsCar careControlsOverview
upholstery155
vinyl upholstery154
wool velour155
Cargo
loading114
securing114
Caring for the vehicle's
finish153
Cassette operation, refer
also to the Radio Owner's
Manual
Catalytic converter121
CBC (Cornering Brake
Control)21,123
CD operation, refer also to
the Radio Owner's Manual
Cellular phone111,129
refer to also the separate
Owner's Manual
Center (high-mount) brake
lamp171
Center armrest110
Central locking system34
button38
Changing a tire173
Changing a wheel173
Check Control83
Child restraints64
Child restraint
systems61,64
Child seat security65
Child's seat61,64
Cigarette lighter112 Cleaning headlamps78
Cleaning windshield77
Clock84
Cockpit16
Code, refer to the radio
Owner's Manual
Coin box, cup holder111
Combination switch76
Compression196
Computer83
refer also to the separate
Owner's Manual
Configure settings59
Consumption85
Contents10
Convertible top45
cleaning and care157
closing following an
electrical malfunction181
compartment panel41
convenience operation34
electrical fault181
emergency closure181
Coolant127,147,199
antifreeze127
Cooling system199
Copyright4
Cornering Brake Control
(CBC)21,123
Cruise control79
Cruising range85
Curb weight198
Current check indicator20
D
Data
dimensions197
engine196
technical196
weights198
Daytime-driving lamp
switch93
DBC (Dynamic Brake
Control)124
Deep water121
Defrost setting100,105
Defrostable rear
window98,106
Defrosting the
windows100,105
Digital clock84
Dimensions197
Dipstick145
Disc brakes125
Displacement196
Display lighting93
Displays18
Disposal
batteries178
engine oil147
Distance warning87
Diversity Antenna190
Door key32
Door locks, care127 Doors
emergency operation34
remote control35
unlocking and locking34
DOT Quality Grades133
Draft-free
ventilation99,106
Drive belts200
Driving hints121
Driving in winter127
Driving lamps93
DSC (Dynamic Stability
Control)22,88,189
Dynamic Brake Control
(DBC)124
Dynamic Stability Control
(DSC)22,88,189
E
Electric power windows44
Electrical accessories,
failure179
Electrical system200
Electronic vehicle
immobilizer33
Elements of operation16
Emergency closure181
Emergency operation
convertible top181
doors34
fuel filler door180
Energy Control81

Everything from A to ZEngine
compartment142,143
Engine coolant147,199
Engine data196
Engine oil145
adding145
capacity199
consumption145
disposal147
level check145
pressure20
quality146
specifications146
viscosity146
Engine speed196
Engine, starting69
Engine, switching off70
Enlarging the luggage
compartment41
Enter the rear55
Entry to the rear55
Exterior mirrors57
Eyelets, towing184 F
Failure messages83
Fault, ABS123
Filler cap cover26
Filling capacities199
Filling the washer
reservoir199
First-aid kit25 Fittings, towing and tow
starting184
Flashlight107
Flat tire132,173
Fog lamps94
bulb replacement169
Follow-Me-Home lamps93
Footbrake125
Footwell lamps94
bulb replacement172
Front seat adjusting52
Frost protection,
radiator147
Fuel27
consumption85
gauge82
preparation196
quality27
reserve indicator85
specifications27
tank capacity199
Fuel filler door
unlock in case of electrical
fault180
Functional status of
electrical and electronic
systems192
Fuses179
replacing179
G
Garage-door opener108
Gasoline27
Gasoline gauge82
Glove compartment107
Glove compartment lamp,
bulb replacement172
Gross vehicle weight198 H
Handbrake71
Handsfree system111
Hazard warning flashers25
Hazard warning triangle25
Head restraints53
Headlamp cover,
care151,167
Headlamp flasher76,94
Headlamp washer
system78,144,199
Heated seats107
Heating, rapid100
Heavy loads114
Height197
High beams23,76,94
bulb replacement167
High Performance Synthetic
Oils146
High-mount brake lamp171
Hood, release140
Horn17 Hubcap174
Hydraulic Brake assistant,
refer to DBC
I
Ice warning85
Identification, tires135
Ignition key32
Ignition lock69
Imprint4
Indicator lamps20
Inflation pressure27,132
monitoring91,192
INSPECTION82
Instrument cluster18
Instrument panel16,18
lighting93
Interaxle tire rotation134
Interface socket for Onboard
Diagnostics162
Interference
cellular phones129
Interior lamps36,94
bulb replacement171
remote control36
Interior motion
sensor36,43
Interior rearview mirror58
automatic dimming
feature58,191

Owner service procedures
A
Activated-charcoal filter 180
Adding brake fluid 148
Adding engine coolant 148
Adding engine oil 145
Air pressure, checking 27
Antifreeze 147
Avoiding unwanted alarm 43
B
Backup lamps, bulb replacement 169
Battery add distilled water 177
charging 178
Brake faults 126
Brake fluid, adding 148
Brake lamps, bulb replacement 169
Brakes, brake faults 126
C
Changing a tire 173
Changing a wheel 173
Changing the
microfilter 180 Checking air pressure
27
Checking engine oil level 145
D
Defrost setting 100,105
Defrosting the windows 100,105
Difficult steering 129
Doors, emergency actuation 34
E
Electrical accessories, failure 179
Emergency operation convertible top 181
doors 34
fuel filler door 180
Engine coolant, adding 148
Engine oil add 145
level checking 145
quality 146
specifications 146
viscosity 146
Eyelets, towing 184
F
False alarm, avoiding 43
First-aid kit 25
Flat tire 173
Fog lamps, bulb replacement 169
Footwell lamps, bulb replacement 172
Fuel filler door manual release after
electrical fault 180
Fuses, replacing 179
G
Glove compartment lamp, bulb replacement 172
H
Hazard warning flashers 25
Hazard warning triangle 25
Headlamp cover, care 167
High beam headlamps, bulb replacement 167
Hood release 140
I
Indicator lamps 20
Inflation pressures 27,132 Interior lamps, bulb
replacement 171
Interior motion sensor, switching off 43
J
Jack 173
L
License plate lamp, bulb replacement 171
Low beam headlamps, bulb replacement 167
Luggage compartment emergency release 39
Luggage compartment lamps, bulb
replacement 172
Luggage compartment lid emergency release 39
M
Maintenance 150
Microfilter, changing 180
Motion sensor, switching off 43