check engine BMW M3 COUPE 2006 E46 User Guide

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1Filler neck for headlamp and wind-
shield washer cleaning system122
2Coolant expansion tank124
3Auxiliary terminal for jump-starting –
positive terminal143
4Engine oil filler neck123
5Expansion tank for SMG Drivelogic
hydraulic unit, checking and possible
refilling by your BMW center66
6Engine oil dipstick122
7Filler neck for brake fluid125Engine compartment essentials
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Washer fluidsHeadlamp* and windshield
washer systemCapacity approx.
5.6 US quarts/5.3 liters.
Fill with water and, if required, with a
washer antifreeze additive according to
manufacturer's recommendations.
We recommend that you mix the
washer fluid before adding it to
the reservoir.<
Antifreeze agents for the washer
fluid are highly flammable. For this
reason, keep them away from sources
of flame and store them only in their
closed original containers. Store them
inaccessible to children. Comply with
the instructions on the containers.<
Engine oilChecking the oil level1. Park the vehicle on a level surface
2. Switch the engine off after it has
reached normal operating tempera-
ture
3. After approx. 1 minute, pull the dip-
stick out and wipe it off with a clean
lint-free cloth, paper towel, or similar
material
4. Carefully push the dipstick all the
way into the guide tube and pull it
out again
5. The oil level should be between the
two marks on the dipstick.
As with fuel economy, oil consumption
is directly influenced by your driving
style and vehicle operating conditions.
The oil volume between the two marks
on the dipstick corresponds to approx.
1.4 US quarts/1.3 liters.

123
Adding engine oilOnly add engine oil when the oil level
has dropped to just above the lower
mark on the dipstick.
Do not fill beyond the upper mark on
the dipstick. Excess oil will damage the
engine.
Before checking the engine oil level
after topping up, restart the engine and
allow it to run to obtain a correct dis-
play. Then proceed as described under
Checking the oil level.
Continuous exposure to used oil
has caused cancer in laboratory
testing. For this reason, thoroughly
wash any areas of skin that come into
contact with oil using soap and water.
Store oils, grease and similar materials
so that they are inaccessible to chil-
dren. Comply with warning labels and
information on containers.<
Comply with the applicable envi-
ronmental laws regulating the dis-
posal of used oil.<
Recommendation: have the oil changed
at your BMW center.
Specified engine oilsThe quality of the engine oil is
extremely important for the function
and life of an engine. Based on exten-
sive testing, BMW has approved only
certain grades of engine oil.
Use only oils approved for your vehicle
model.
Ask your BMW center for details
concerning oils that have been
approved. You can also call BMW of
North America toll-free at 1-800-831-
1117 or visit this website:
www.bmwusa.com to obtain this infor-
mation.<
BMW engines are designed to
operate without oil additives; the
use of additives could even lead to
damage in some cases.<
Alternative oil typesIf a High Performance Synthetic Oil
approved by BMW should be unavail-
able, you may use small volumes of
other oils for topping up between oil
changes. The following data must
appear on the packaging:
>Viscosity
preferred: SAE 10W-60
alternative: SAE 5W-40 or
SAE 10W-40
>Specifications
preferred: API SJ/CF
alternative: API SJ – also SK, SL, S
etc.
Engine oil
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124
Low ambient temperaturesThe oils used by BMW at the factory for
your vehicle model can be used at virtu-
ally any ambient temperature.
However, if the vehicle is exposed to
temperatures below –47/–206 for
extended periods, please have your
BMW center recommend a suitable oil.
Coolant
Do not open the cooling system
when the engine is hot. If you do,
escaping coolant can cause burns.<
Coolant consists of water and coolant
additives. Not all commercially available
additives are suitable for your BMW.
Your BMW center knows which addi-
tives are appropriate.
Only use approved additives, as
the engine could otherwise be
damaged. The additives are hazardous
to health.<
Comply with the applicable envi-
ronmental laws regulating
the disposal of coolant additives.<
Checking the coolant level1. The engine must be at ambient tem-
perature
2. Open the cap for the expansion tank
by turning it slightly counterclock-
wise to allow accumulated pressure
to escape. Then open
3. The coolant level is correct when the
upper end of the red float is even
with the upper edge of the filler neck,
refer to the arrow in the illustration or
to the schematic diagram next to the
filler neck
4. If necessary, slowly add coolant until
the correct level is reached; do not
overfill
5. Close the cap by turning until it is
well tight
6. Have the cause for the coolant loss
removed as soon as possible.
Engine oil

125
Brake fluidIndicator lamp
The warning lamp comes on
even though the parking brake
is released:
The brake fluid level is too low, refer to
page 18. At the same time, there may
be significantly greater pedal travel.
Have the system checked immediately.
Warning lamp for Canadian
models.
If you continue driving, extended
pedal travel may be necessary
and braking distances may be signifi-
cantly longer. Be sure to adapt your
driving style accordingly.<
Adding brake fluidFor adding brake fluid or for determin-
ing 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.
Due to loss in brake fluid, pedal travel
can lengthen and braking efficiency
may be reduced.
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
a BMW center. Refer also to the Service
and Warranty Information Booklet for
US models or the Warranty and Service
Guide Booklet for Canadian models.
Brake fluid is toxic and damages the
vehicle's paint. You should always store
it in its closed original container and in
a location inaccessible to children.
Do not spill the brake 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 envi-
ronmental laws regulating
the disposal of brake fluid.<
OverviewControlsMaintenanceRepairsDataIndex

126Maintenance
BMW Maintenance SystemThe BMW Maintenance System helps
maintain your vehicle's road safety and
operational safety. Comfort-related
aspects, such as the timely change of
filters for the air inside the vehicle, are
taken into consideration. The goal is to
optimize maintenance with respect to
low total cost of ownership.
If you should sell your BMW one day,
consistent service and maintenance will
prove to your advantage.
Service interval displayThe service interval display shows you
when an oil service, an inspection –
always alternating between I and II – or
a brake fluid change is due. The special
feature is that the service intervals are
calculated according to your BMW's
individual driving conditions instead of
from fixed mileage increments.
The technology developed for this
takes your personal driving style into
account, as well as your BMW's driving
conditions. After all, short-distance
driving, i.e. frequent cold starts, or driv-
ing off at high engine speeds, affects
your BMW differently from long-dis-
tance driving with the engine at consis-
tent operating temperature.
Have a break-in inspection per-
formed at approx. 1,250 miles/
2,000 km regardless of the service
interval indicated on the display.<
Special feature regarding engine
oil changeThe calculation of the service intervals
covers practically every kind of operat-
ing situation. If you drive very rarely,
however, you should have the oil
changed at least every two years, since
engine oil deteriorates over time
regardless of use.Service and Warranty Information
Booklet for US models/Warranty
and Service Guide Booklet for
Canadian modelsFor additional information on required
maintenance intervals and procedures,
please refer to the Service and War-
ranty Information Booklet for US mod-
els, or the Warranty and Service Guide
Booklet for Canadian models.
As a precaution against corrosion, it is
advisable to have the body checked for
damage from rocks or gravel at the
same time, depending upon operating
conditions.

128Laws and regulations
OBD interface socketThe Onboard Diagnostic (OBD) inter-
face socket is located on the left of the
driver's side under the instrument panel
and under a cover.
The cover has the letters OBD on it.
The purpose of the OBD system is to
ensure proper operation of the emis-
sion control system for the vehicle's
lifetime. The system monitors emission-
related components and systems for
deterioriation and malfunction.
An illuminated lamp informs you
of the need for service, not of
the need to stop the vehicle.
However, the systems should be
checked by your BMW center at the
earliest possible opportunity.
Display in Canadian models for
the malfunction described
above.
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.
When the fuel filler cap is not
properly tightened, the OBD sys-
tem can detect the vapor leak and the
indicator will light up. If the filler cap is
subsequently tightened, the indicator
should go out within a few days.<
Event data recordersYour vehicle may be equipped with one
or more sensing and diagnostic mod-
ules or a recording device capable of
recording or transmitting certain vehicle
data or information. In addition, if you
have a Subscription Service Agreement
for the BMW Assist system, certain
vehicle information may be transmitted
or recorded in order to provide such
services.

140
4. Adjust the tire inflation pressure to
29 psi / 200 kilopascal. For this pur-
pose, with the ignition key in
position 2:
>Increase the tire pressure: switch
on the compressor, position I. To
check the current inflation pres-
sure, turn off the device briefly
>Reduce the tire pressure: press
button 8, or turn screw 8 on the
manometer.
Do not run the compressor for
longer than 10 minutes, otherwise
the unit may overheat and be dam-
aged.<
If the tire fails to hold the pres-
sure, drive the vehicle again, see
Distributing the sealant. Then repeat
Steps 1 through 4 once.
The use of the M Mobility system may
be ineffective if the damaged area in
the tire is larger than approx. 1/8 in /
4 mm. If the tire cannot be temporarily
repaired with the M Mobility system,
please consult the nearest BMW cen-
ter, or a workshop that has appropri-
ately trained personnel working in
accordance with BMW specifications,<
The tire pressure must be at least
29 psi / 200 kilopascal. Otherwise,
do not continue driving.<
Driving on
Do not exceed the maximum
speed limit of 45 mph / 80 km/h;
otherwise, accidents may occur.<
Have the damaged tire replaced
as soon as possible. Reinitialize
the Flat Tire Monitor, and refer to
page 84 for further information.
Have the sealant bottle of the M Mobil-
ity system replaced.<
Battery
Battery posts, terminals, and
related accessories contain lead
and lead compounds. Wash hands after
handling.<
MaintenanceThe battery is completely maintenance-
free. This means that the original bat-
tery acid will normally last for the ser-
vice life of the battery under moderate
climate conditions. Your BMW center
will be glad to advise you if you have
any questions concerning the battery.
Please consult your BMW center
whenever you have any questions
concerning the battery. when the engine is not running. Use the
connections provided in the engine
compartment. Terminals, refer to Jump-
starting, page 143.
Tire repair with the M Mobility system

143
Mobile Service*To establish contact with the BMW
Group's Mobile Service:
Press button 2 for at least 2 seconds.
The indicator lamp above the buttons
lights up. As soon as a telephone con-
nection has been set up with the Mobile
Service, the indicator lamp flashes.
Depending on the country you are in,
your vehicle's current location will also
be transmitted if your vehicle is
equipped with an activated BMW Assist
function.
Jump-startingWhen your battery is discharged, you
can use two jumper cables to start your
vehicle with power from the battery in a
second vehicle. You can also use the
same method to help start another
vehicle. Use only jumper cables with
fully insulated handles on the terminal
clamps.
Do not touch high-voltage wiring
and cables on a running engine.
Contact with components carrying high
voltage can be harmful or fatal.
Carefully observe the following instruc-
tions to avoid personal injury and/or
damage to one or both vehicles. support vehicle has 12 volts and
approximately the same capacity –
measured in Ah. This information is
provided on the battery
2. Stop the engine of the support vehi-
cle
3. Switch off all consumers in both
vehicles.
Make absolutely certain that there
is no contact between the body-
work of the two vehicles, otherwise
there is a short circuit hazard.<
Connecting the jumper cables
Be sure to connect the jumper
cables in the right order; other-
wise there is a risk of injury due to
sparks being created near the battery.<
The jump-starting terminal located in
your BMW's engine compartment
serves as the positive battery terminal;
refer also to the engine compartment
overview on page 120. The cover of this
auxiliary terminal is marked with a +.
1. Open the cover of the BMW jump-
starting terminal. Do so by pulling the
tab – see arrow 1
2. Connect one terminal clamp of the
plus/+ jumper cable to the positive
terminal of the battery or to a jump-
starting terminal in the donor vehicle
Receiving assistance
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146
If the tow bar can only be used in a
diagonal position, please note the fol-
lowing:
>Clearance is restricted while you are
driving around corners
>The inclination of the tow bar pro-
duces lateral force.
Only attach the tow bar to the
towing eyelets. Other parts of the
vehicles could otherwise be dam-
aged. make sure that the tow rope is taut.
Use nylon ropes or straps for tow-
ing because they prevent sudden
jerking movements. Attach the tow rope
only to the towing eyelets. Other parts
of the vehicles could otherwise be
damaged.<
With a tow truckHave the BMW transported by a tow
truck with a lift sling, or on a flatbed.
Never allow passengers to ride in
a towed vehicle for any reason.<
Do not lift the vehicle by the tow-
ing eyelet, nor by parts of the
body or chassis. Otherwise damage
could result. converters if the engine is cold. It is
better to jump-start the engine, refer to
page 143.
1. Turn on hazard warning flashers;
comply with national regulations
2. Turn the ignition key to position 2
3. Engage the 3rd gear
4. Have the vehicle towed with the
clutch pedal completely depressed
and then slowly release the clutch
pedal. After the engine has started,
immediately depress the clutch pedal
again completely
5. Pull over at a suitable location,
remove the tow bar or tow rope, and
turn on the hazard warning flashers
6. Have the vehicle checked.
Vehicles with sequential M gearbox
with Drivelogic:
>Have the vehicle towed with the
selector lever in position N
>Move the selector lever into position
S and pull it toward + within 2 sec-
onds. The correct gear will automati-
cally be selected and engaged
>After the engine has started, move
the selector lever into position N
again.
Towing and tow-starting the vehicle