2001 BMW 325Ci CONVERTIBLE check engine light

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Indicator and warning lamps

Technology that monitors itself

Many of the systems of your BMW
monitor themselves automatically, both
during engine starts and while you are
driving. Indicator and warning lamps
that are identified by "

l

" are tested for
proper functioning whenever the igni-
tion key is turned. They each light up
once for different periods of time.
If a fault should occur in one of these
systems, the corresponding lamp does
not go out after the engine is started, or
it lights up while the vehicle is moving.
You will see how to react to this below.

Red: stop immediately

Battery charge

l


The battery is no longer being
charged. There is a malfunction
of the alternator V-belt or in the
charging circuit of the alternator. Please
contact the nearest BMW center.
If the V-belt is defective, do not
continue driving, otherwise, the
engine could be damaged due to over-
heating. If the V-belt is defective,
increased steering effort is also
required.

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Engine oil pressure


l


Stop the vehicle immediately
and switch off the engine.
Check the engine oil and top off as
required. If the oil level is correct,
please contact the nearest BMW
center.
Do not continue driving. If you do
so, the engine could be damaged
because of inadequate lubrication.

<
Tire Pressure Control (RDC) l
In addition, an acoustic signal is
sounded: a tire failure has
occurred. Reduce vehicle speed imme-
diately to stop the vehicle. Avoid hard
brake applications. Do not oversteer.
For additional information, refer to
page 91.
Brake warning lamp l
If the lamp comes on when the
parking brake is not engaged:
check the brake fluid level. Before
driving further, be sure to read the
notes on pages 126 and 148.
Brake warning lamp for Cana-
dian models.

22n
Indicator and warning lampsYellow: check as soon as possible
Antilock Brake System (ABS) l
ABS has been deactivated in
response to system malfunction.
Conventional braking efficiency is avail-
able without limitations. Please have
the system inspected by your BMW
center.
For additional information, refer to
page 123.
ABS warning lamp for Canadian
models.
Engine oil level
Lights up while driving:
The oil level is at the absolute
minimum; therefore, add engine oil as
soon as possible. Do not drive more
than 30 miles (50 km) until you do.
For additional information, refer to
page 145.
Engine oil level
Comes on after the engine has
been shut off: add oil at the
earliest opportunity (when you stop to
refuel).
For additional information, refer to
page 145.
Brake pads l

Have the brake pads checked.
For additional information, refer
to page 126.
Tire Pressure Control (RDC) l
Check tire inflation pressure:
refer to pages 27, 91.
Automatic Stability Control
plus Traction (ASC+T)/Dynamic
Stability Control (DSC l
Indicator lamp flashes:
The system is active and governs drive
force and braking force.
The indicator lamp remains on:
ASC+T has been switched off via the
button or it is defective, or the DSC has
been switched off, ADB is operational.
Please consult the nearest BMW center
in the event of a fault.
For additional information, refer to
page 88.
Automatic Stability Control plus
Traction (ASC+T)/Dynamic
Stability Control (DSC) and
brake warning lamp l
The indicator lamps remain on:
DSC
and ADB/DBC are
switched off via the button or are defec-
tive.
Please consult the nearest BMW
center.
For additional information, refer to
page 88.
DSC and ADB/DBC indicator
and warning lamps for Canadian
models.
Add washer fluid.
The washer fluid is too low. Top
up the fluid at the earliest
opportunity.
For additional information, refer to
page 144.
Service Engine Soon l
If the indicator lamp comes on
either continuously or intermit-
tently, this indicates a fault in the emis-
sions-related electronic systems.
Although the vehicle remains opera-
tional, you should have the systems
inspected by your BMW center at the
earliest possible opportunity.
For additional information, refer to
page 162.
Service Engine Soon warning
lamp for Canadian models.

Overview
Controls and features
Operation, care
and maintenance
Owner service procedures
Technical data
Index Advanced technology
31n
IndexDataTechnologyRepairsCar careControlsOverview
Driving:
Steering/Ignition lock69
Starting the engine69
Switching off the engine70
Parking brake71
Manual transmission72
Automatic transmission with
Steptronic73
Turn signal indicator/Headlamp
flasher76
Washer/Wiper system76
Rear window defroster78
Cruise control79
Everything under control:
Odometer81
Tachometer81
Energy Control81
Fuel gauge82
Coolant temperature gauge82
Service Interval Display82
Check Control83
Computer83
Technology for driving comfort
and safety:
Park Distance Control (PDC)87
Automatic Stability Control plus
traction (ASC+T)88
Dynamic Stability Control
(DSC)89
Tire Pressure Control (RDC)91Lamps:
Side lamps/Low beams93
Instrument panel lighting93
High beams/Parking lamps94
Fog lamps94
Interior lamps94
Controlling the climate
for pleasant driving:
Air conditioner96
Automatic climate control102
Seat heating107
Interior convenience:
Glove compartment107
BMW Universal Transmitter108
Storage facilities110
Cellular phone111
Ashtray, front111
Cigarette lighter112
Ashtray rear112
Loading and transporting:
Ski bag113
Cargo loading114
Roof-mounted luggage rack for
hardtop116

82n
Fuel gauge Coolant temperature Service Interval Display When you switch on the ignition, the
indicator lamp comes on briefly to
confirm that the system is operational.
Once the indicator lamp stays on
continuously, there are still approx. 2
gallons (8 liters) of fuel remaining in the
fuel tank.
For fuel tank capacity: refer to page 199.
If the tilt of the vehicle varies (extended
driving in mountainous areas, for
example), there may be slight fluctua-
tions of the needle.
Fill the fuel tank well before it is
empty. Driving to the last drop of
fuel can result in damage to the engine
and/or the catalytic converter.<462us020
BlueThe engine is still cold. Drive at
moderate engine and vehicle speeds.RedWhen you switch on the ignition, the
indicator lamp comes on briefly to
confirm that the system is operational.
If the lamp comes on while operating
the vehicle: the engine is overheated.
Stop and switch the engine off immedi-
ately and allow it to cool down.Between the blue and red zonesNormal operating range. It is not
unusual for the needle to rise as far as
the edge of the red zone in response to
high outside temperatures or severe
operating conditions. To check the
coolant level: refer to page 147.460de082
Remaining distance for serviceThe displays shown in the illustration
appear for a few seconds when the
ignition key is in position 1 or after the
engine is started.
The next service due appears with the
message OILSERVICE or INSPECTION,
together with the distance remaining
before the next scheduled service.
The computer bases its calculations of
the remaining distance on the
preceding driving conditions.
A flashing message and a "Ð" in front of
the number mean that the service
interval has already been exceeded by
the distance shown on the display.
Please contact your BMW center for an
appointment.46cus006

91n
IndexDataTechnologyRepairsCar careControlsOverview
Tire Pressure Control (RDC)
*
The conceptRDC monitors the tire pressures at all
four wheels, even when the vehicle is
moving. The system provides an alert
whenever the inflation pressure drops
significantly below the specified pres-
sure in one or more tires.
In order for the system to "learn" the
correct tire inflation pressure, check the
inflation pressure in all tires according
to the inflation pressure table (page 28)
and make corrections if necessary.
Then activate the system.
This indicator lamp in the instru-
ment cluster will inform you if
the tire pressure is not correct.
Activate the systemDepending on the type of equipment,
the switch either has the letters RDC on
it or the RDC-symbol.
1 Turn ignition key to position 2 (do not
start the engine).
2 Press the switch long enough for the
yellow indicator lamp in the instru-
ment cluster to light up for a few
seconds.
3 After a few minutes driving time, RDC
sets the current inflation pressure in
the tires as the target values to be
monitored.
You will only have to repeat this proce-
dure following a correction of the tire
inflation pressure. Otherwise, RDC
functions automatically when the igni-
tion key is in position 2, and thus oper-
ates whenever the vehicle is driven.46cus046
In the event of loss in tire
pressureIf the inflation pressure has dropped
significantly over a long period of time
(which is normal for any tire), the indi-
cator lamp will come on with a yellow
lamp.
This alerts you to have the tires inflated
to the specified pressures as soon as
possible.
If you are prompted to check the
tire pressure shortly after a
correction has been made, this indi-
cates that the corrected values were
not accurate. Please check the inflation
pressure again and make corrections
according to the inflation pressure
table. Then activate the system once
again.<

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IndexDataTechnologyRepairsCar careControlsOverview
Antilock Brake System (ABS)Antilock Brake System (ABS)/
Cornering Brake Control (CBC) CBC is an advanced engineering
design of the ABS. When braking while
cornering at high speed or braking
during high lateral acceleration, or
when braking during a lane change,
vehicle stability is improved and
steering response is enhanced.
In the event of a malfunction
The ABS warning lamp in the
instrument cluster lights up,
refer to page 22. The brake
system then reverts to conventional
operation as on vehicles without ABS.
However, have the brake system
chekked by your BMW center as soon
as possible. To prevent undetected
defects and cumulative faults from
adversely affecting the brake system,
refer any problems to your BMW center
at the earliest opportunity.
ABS warning lamp for Canadian
models.
The brake-warning lamp comes
on along with the indicator
lamps for ABS and ASC+T/DSC,
refer to page 21, then the entire
control system for ABS, CBC
and ASC+T/DSC and ADB/DBC
has failed. Continue driving
cautiously and defensively.
Avoid full brake applications. This could
cause the vehicle to lose stability and
you might no longer be able to control
it.
Have the system checked by your BMW
center as soon as possible.
CBC, ABS and ASC+T/DSC and
ADB/DBC indicator and warning
lamps for Canadian models.

148n
Coolant Brake fluidAdding coolant Wait until the engine cools before
removing the cap from the expansion
tank. The needle of the coolant temper-
ature gauge in the instrument cluster
must be located in the blue zone. If it
is not, there is a danger of scalding.
1 Turn the cap slightly counterclock-
wise in order to allow accumulated
pressure to escape. Then open.
2 If the coolant is low, slowly add
coolant until the correct level is
reached Ð do not overfill.
The coolant is a mixture of water and
extended-duty antifreeze with corrosion
inhibitor. Always maintain the
prescribed all-season 50:50 mixture
ratio for year-round protection against
internal corrosion. No other additives
are required.
Replace the coolant every four years.The brake warning lamp comes on
when the parking brake has been
released:
Check the brake fluid level and if
necessary, top up to the "MAX" mark.
For adding brake fluid or for deter-
mining and correcting the cause of
brake fluid loss, consult your BMW
center. Your BMW center is familiar
with the specifications for factory-
approved brake fluids (DOT 4).
Brake fluid loss can result in extended
pedal travel. Comply with the informa-
tion provided on page 126.
460de128
Brake fluid is hygroscopic, that is,
it absorbs moisture from the air
over time.
In order to ensure the safety and reli-
ability of the brake system, have the
brake fluid changed every two years by
an authorized BMW center. Refer also
to the Service and Warranty Information
Booklet (US models) or the Warranty
and Service Guide Booklet (Canadian
models). Brake fluid is hazardous to
health and damages the vehicle's paint.
You should always store it in its original
container and in a location that is
inaccessible to children.
Do not spill the fluid and do not fill the
brake fluid reservoir beyond the "MAX"
mark. The brake fluid could ignite upon
contact with hot engine parts and
cause serious burns.<
Comply with the applicable
environmental laws regulating
the disposal of brake fluid.<

162n
OBD interface socketThe OBD interface socket for onboard
diagnostics is located on the driver's
side, on the left-hand bottom of the
instrument panel and under a cover
panel. The cover is marked with the
letters "OBD".
The purpose of the OBD system is to
assure proper emission control system
operation for the vehicle's lifetime by
monitoring emission-related compo-
nents and systems for deterioration and
malfunction.460us250
An illuminated indicator informs
you of the need for service, not
that you need to stop the vehicle.
Your system should be checked, how-
ever, at the earliest possible opportunity.
If the indicator blinks or flashes, this
indicates a high level of engine misfire.
Reduce speed and contact the nearest
BMW center immediately. Severe
engine misfire over even a short period
of time can seriously damage emission
control components, especially the
catalytic converter.
Service Engine Soon warning
lamp for Canadian models.
If the fuel filler cap is not on tight
enough, the OBD system can
detect leaking vapor and the indicator
will light up. If the fuel filler cap is then
tightened, the indicator will usually go
out after a short period of time.<