2001 BMW M ROADSTER COUPE check engine light

20n

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 current

l

The battery is no longer being
charged. The alternator drive
belt is defective or there is a malfunc-
tion in the charging circuit of the alter-
nator. Please contact the nearest BMW
center.
If the drive belt is defective, do not
continue driving. The engine could
be damaged due to overheating.
Increased force is required to steer the
vehicle if the drive belt is defective.

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Engine oil pressure

l

Stop the vehicle immediately
and switch off the engine.
Check the engine oil level. Top up as
required. If oil level is correct: please
contact the nearest BMW center.
Do not continue driving, other-
wise, the engine could be
damaged because of inadequate lubri-
cation.

<



Brake hydraulic system

l

The brake fluid level is too low.
Before driving further, be sure to
read the notes on pages 92 and 112.
Brake hydraulic system warning
lamp for Canadian models.
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22n

Indicator and warning lamps

Yellow: 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 89.
Antilock Brake System warning
lamp for Canadian models.
Engine oil level

l

Comes on while driving: the
oil level is at the absolute
minimum; refill as soon as possible. Do
not drive more than approx. 30 miles
(50 km) until you add oil.
For additional information, refer to
page 109.
Engine oil level

l

Comes on after the engine has
been shut off: add engine oil at
your earliest opportunity (when you
stop to refuel).
For additional information, refer to
page 109.
Engine oil level

l

Comes on for a short time
(approx. 15 seconds) after the

engine has been started: please have
the system checked by your BMW
center.
Brake pads

l

Have the brake pads checked.
For additional information, refer
to page 92.
Tire Pressure Warning RDW

l

RDW has been switched off via
the button or has been deacti-
vated because of a malfunction. In the
event of a malfunction, have the system
checked by your BMW center.
For additional information, refer to
pages 26, 67.
Dynamic Stability Control
(DSC)

l

Indicator lamp flashes:
The system is active and governs drive
force and braking force.
If the indicator lamp fails to go out after
the engine is started, or if it comes on
during normal driving and stays on:
DSC has been switched off via the
button or has been deactivated
because of a malfunction.
In the event of a malfunction, have the
system checked by the nearest BMW
center.
For additional information, refer to
page 65.

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
checked by your BMW center at the
earliest possible opportunity.
For additional information, refer to
page 125.
Service Engine Soon warning
lamp for Canadian models.
Engine electronics

l

There is a fault in the engine's
electronic control system. You
can continue to drive with reduced
engine output or engine speed. Please
have the system checked by your BMW
center.
Check Filler Cap

l

If the indicator lamp lights up
with the filler cap properly
closed: there is a fault in the fuel
system. The system should be checked
at the earliest possible opportunity at
your BMW center.
For additional information, refer to
page 25.
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112n
Coolant Brake fluid Checking coolant levelThe correct coolant level when the
engine is cold (approx. +68 7/+20 6).
Unscrew the cap from the expansion
tank.
The coolant level is correct when the
upper end of the red float is at least
even with the upper edge of the filler
neck (refer to the arrow in the illustra-
tion), but no more than 0.8 in (2 cm)
above it – that is, up to the second mark
on the float (refer also to the schematic
diagram next to the filler neck).367de356
To add coolantWait 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 field; other-
wise, 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 – 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 regularly. Refer to
the Service and Warranty Information
Booklet (US models) or the Warranty
and Service Guide Booklet (Canadian
models).If the warning lamp for the brake
hydraulic system comes on:
The brake fluid level is too low.
Add brake fluid until the upper
mark ("MAX") is reached.
To eliminate the cause of the brake fluid
loss, please consult a BMW center. You
can also receive information concerning
approved brake fluids (DOT 4) there.
Brake fluid loss may result in extended
brake pedal travel. If this occurs, refer
to the notes on page 92.
36mde789
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125n
IndexDataTechnologyRepairsCar careControlsOverview
OBD connectorThe connector for the Onboard Diag-
nostic system (OBD) is located in the
center console under a cover on the
passenger's side (arrow).
The purpose of the OBD system is to
ensure proper operation of the emis-
sion control system throughout the
vehicle's lifetime by monitoring emis-
sion-related components and systems
for deterioration and malfunction.367us235
An illuminated indicator informs
you of the need for service,
but 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 emission control
components, especially the catalytic
converter.
Service Engine Soon warning
lamp for Canadian models.
When the 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 subse-
quently tightened, the indicator should
go out within a few days.<
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Everything from A to Z
167n
IndexDataTechnologyRepairsCar careControlsOverview
NNet81
Non-smoker's equipment
package80
Notes on driving87OOBD data link
connector125
Odometer62
Oil, adding109t
Oil additives109
Oil change intervals, refer to
the Service and Warranty
Information Booklet (US
models) or the Warranty
and Service Guide Booklet
(Canadian models)
Oil consumption109
Oil dipstick109
Oil grades110
Oil level
checking109t
indicator lamp22
Oil pressure, indicator
lamp20
OILSERVICE64
Old batteries141
Onboard Diagnostics, data
link connector125
Onboard tool kit128tOpening and closing
from the inside33
from the outside32
Original parts6
Output156
Outside mirrors47
PPaint damage119
Paint protection119
Parking brake21, 57
Parking lamps69
Parking, winter94
Partition net81
Phone, mobile95
refer also to the separate
Owner's Manual
Please wear your safety belt
warning lamp21
Position lamp, bulb
replacement130t
Power seat adjustment46
Power steering94
Pressure, tires26t, 98
Protection, paint119QQuality Grades99
RRadiator, frost protection93
Radio reception150
Radio, refer to the separate
Owner's Manual
Reading lamps71
Rear lamps131t
Rear window defroster60
Rear window washer,
automatic59
Rear window wiper59
blade replacement128t
Rearview mirrors47
Recirculated air mode74
Refueling25
Releasing the hood104t
Replacement key30
Replacement, tires99, 100
Replacing fuses142t
Replacing windshield wiper
blades128t
Reporting safety defects7
Reservoir, washer
system108t
Reverse gear58
Roll-up cover81
Roof load capacity158
Roof rack83
Rubber seals and
components93, 120
SSafety belt tensioner151
Safety belts49
Safety defects, reporting7
Seals and
components93, 120
Seat adjustment46
Seat heaters77
Securing cargo82
Service and Warranty
Information Booklet
(US models)115
Service Interval
Display64, 114
Set temperature74
Side airbags51, 122
Side marker lamps, bulb
replacement131t
Skid control94
Slippery roads93
Snow chains93t, 102
Socket80
electrical appliances80
flashlight80
vacuum cleaner80
Spare keys30
Spark plugs160
Special oils110
Specifications, engine156
Speed control61
Starting assistance144t
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