2008 BMW M3 CONVERTIBLE check engine

Lamps
78 angle and other parameters, the light from the
headlamp follows the course of the road.
In tight curves at speeds up to 40 mph/70 km/h,
e.g. on mountainous roads or when turning, an
additional, corner-illuminating lamp is switched
on that lights up the inside area of the curve.
Activating Adaptive Head Light
With the ignition switched on, turn the light
switch to position 3, refer to page76.
The corner-illuminating lamp is switched on
automatically, depending on the steering wheel
angle or turn signal indicator.
To avoid blinding oncoming traffic, the Adaptive
Head Light directs light towards the front pas-
senger side when the vehicle is at a standstill.
When you are reversing, only the corner-illumi-
nating lamps are active and switched on on
both sides.
Malfunction
The LED next to the symbol for automatic head-
lamp control flashes. Adaptive Head Light is
malfunctioning or has failed. Have the system
checked as soon as possible.
High beams/roadside parking
lamps
1High beams
2Headlamp flasher
3Roadside parking lamps
*
Roadside parking lamps, left or right
There is an additional option of switching on the
lamps on the side of the car facing the road
when parked.
Switching on
After parking the vehicle, press the lever up or
down beyond the pressure point for a longer
period, arrow 3.
The roadside parking lamps drain the bat-
tery. Therefore, do not leave them on for
unduly long periods of time, otherwise the bat-
tery might not have enough power to start the
engine.<
Switching off
Press the lever in the opposite direction to the
pressure point, arrow 3.
Instrument lighting
You can adjust the brightness of the instrument
lighting only when the parking lamps or the low
beams are switched on.
1.Push button 1 in the turn indicator lever up
or down repeatedly until the appropriate
symbol appears in the display, accompa-
nied by the brightness level and the word
"SET".
2.Press button 2.

BMW M3 engineering
104
Driving on a race track
BMW recommends the following measures
before driving on a race track:
>Participate in a BMW driver training course
>Have the vehicle checked by your BMW
center
Operation on a race track can lead to
increased wear. The BMW M3 is not
designed for use in competitive motorsports.
This wear is not covered by the vehicle war-
ranty.<
The series brake pads and wear indicator are
not designed for operation on a race track. Your
BMW center will be glad to advise you.

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117
Important parts of the engine compartment
1Expansion tank for coolant, refer to
page119
2Washer fluid filler neck for headlamp clean-
ing system and window washer system,
refer to page573Jump-starting connection, refer to
page136
4Filler neck for engine oil, refer to Adding
engine oil
Engine oil
The engine oil consumption is dependent on
driving style and driving conditions.
Checking oil level
Your car is equipped with an electronic oil-level
monitor.
The oil level can be displayed when the engine
is warm. Continuous short distance travel or a
very sporty driving style may make measure-
ment impossible.
You can have the oil level reading displayed in
the instrument cluster.1Oil level
2Maximum mark
3Minimum mark
4Computer button
Press button 4 in the turn indicator lever repeat-
edly until the oil level display appears in the
instrument cluster.

Under the hood
118 M dual clutch transmission: the oil level
appears in the top display.<
The oil level must be between the two mark-
ings.
A new measurement is taken automatically
each time the engine is started.
Possible displays
1Oil level OK.
2Oil level is being checked.
This can take about 1 minute if the car is at
a standstill on a level surface, or about
5 minutes while the car is moving.
If engine oil was added, it can take up to
30 minutes to get an oil level reading.
3Oil level down to minimum:
Add engine oil at the next opportunity, but
no more than 1 US quart/1 liter, refer also to
Adding engine oil on page118. Add at least
0.5 US quart/0.5 liters, otherwise the oil-
level monitor will be unable to display the
new value reliably.
If the oil level is below the minimum value,
add engine oil immediately to avoid engine
damage.
4Oil level is too high.Have the vehicle checked immedi-
ately, otherwise the excess oil may
lead to engine damage.<
5A value cannot be read at this time. The
engine is not yet warm.
Quick measurement
In addition to the automatic measurement, you
can also determine the current oil level manu-
ally, e. g. after adding engine oil, but such mea-
surements are less accurate.
1.Park the vehicle with a warm engine, i.e.
after an uninterrupted drive of at least
6 miles/10 km, on a horizontal surface.
2.Let the engine idle.
3.Press the computer button in the turn indi-
cator lever repeatedly until the oil level dis-
play appears in the instrument cluster.
4.Press the computer button for at least
2seconds.
The oil level is determined. A clock symbol
appears during measurement.
5.After approx. 1 minute, the current oil level
is displayed.
Adding engine oil
Do not add 1 US quart/1 liter of engine oil until
the display shows an oil level measurement of
"+1qt" or "+1l".
Add oil within the next 125 miles/200 km,
otherwise the engine could be damaged.
Add no more than 1 US quart/1 liter of oil, oth-
erwise too much engine oil can lead to engine
damage. Add at least 0.5 US quart/0.5 liters,
otherwise the oil-level monitor will be unable to
display the new value reliably.<

Reference
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119
Keep oils, greases, etc. out of the reach of
children and comply with the relevant
warnings on the containers. Otherwise, health
hazards may result.<
Oil change
Have oil changed only at your BMW center or at
a workshop that works according to BMW
repair procedures with correspondingly trained
personnel.
Specified engine oils
The quality of the engine oil selected has critical
significance for the operation and service life of
an engine. BMW continuously approves spe-
cific oils after confirming their suitability for use
in its vehicles with extensive testing.
Do not use oil additives as these may
cause engine damage.<
Your BMW center will be glad to answer
any questions regarding BMW High Per-
formance Synthetic Oil or approved synthetic
oils.<
You can also call BMW of North America at
1-800-831-1117 or visit the website
www.bmwusa.com to obtain this information.
Viscosity ratings
Viscosity is a measure of an oil's flow rating and
is categorized in SAE classes.
Approved oils belong to the 10W-60 SAE
class.<
Alternative oil types
If BMW High Performance Synthetic Oil is not
available, you can add small quantities of other
synthetic oils in between oil changes. Only use
oils with the following specifications:
>Viscosity:
preferred: SAE 10W-60;
alternative: SAE 10W-40, SAE 5W-50 or
SAE 10W-50
>Specification:
API SJ/CF, API SK/CF or higher
Low ambient temperatures
The oils used at BMW factories for your vehicle
type are suitable for virtually any ambient tem-
perature. However, if the vehicle is operated at
temperatures below –47/–206 for extended
periods, your BMW center will be glad to rec-
ommend an optimal oil.
Coolant
Do not add coolant to the cooling system
when the engine is hot. Escaping coolant
can cause burns.<
Coolant consists of half water and half additive.
Not all commercially available additives are suit-
able for your BMW. Ask your BMW center for
suitable additives.
Only use suitable additives, otherwise
engine damage may result. Because
additives are harmful to your health, it is impor-
tant to follow the instructions on the contain-
ers.<
Comply with the appropriate environ-
mental protection regulations when dis-
posing of coolant additives.<
Checking coolant level
1.Do not open the engine hood before the
engine has cooled down.
2.Turn the cap of the expansion tank a little
counterclockwise to allow any accumulated
pressure to escape, then continue turning
to open.
3.The coolant level is correct if it is between
the maximum and minimum marks in the
filler neck, refer also to the diagram next to
the filler neck.

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121
Maintenance
BMW Maintenance System
The BMW Maintenance System supports the
preservation of the traffic and operating safety
of your BMW. The objective is to optimize
efforts with respect to minimal vehicle mainte-
nance costs.
If and when you come to sell your BMW, a com-
prehensive record of servicing will prove a sig-
nificant benefit.
Condition Based Service CBS
Sensors and special algorithms take the differ-
ent driving conditions of your BMW into
account. Condition Based Service uses this to
determine the current and future service
requirements. By letting you define a service
and maintenance regimen that reflects your
own individual requirements, the system builds
the basis for trouble-free driving.
In the instrument cluster, you can have the
remaining times or distances for selected main-
tenance tasks and any legally prescribed dates
displayed, refer to page63:
>Engine oil
>Brake pads: separately for front and rear
>Brake fluid
>Vehicle check
>Legally mandated inspections depending
on local regulations
Service data in the remote control
Your vehicle continuously stores service-
requirement information in the remote control
while you are driving. Your BMW Service Advi-
sor can read out this data from the remote con-
trol unit, and propose an optimized mainte-
nance approach. Whenever you take your car in
for servicing you should therefore hand your
BMW Service Advisor the remote control unit
that you last used.
Make sure that the date in the instrument
cluster is always set correctly, refer to
page64; otherwise the effectiveness of Condi-
tion Based Service CBS is not assured.<
Service and Warranty Information
Booklet for US models and Warranty
and Service Guide Booklet for
Canadian models
Please consult your Service and Warranty Infor-
mation Booklet for US models and Warranty
and Service Guide Booklet for Canadian models
for additional information on service require-
ments.
BMW recommends that you have service
and repair operations performed at your
BMW center.
Take the time to ensure that these service pro-
cedures are confirmed by entries in your vehi-
cle's Service and Warranty Information Booklet
for US models and Warranty and Service Guide
Booklet for Canadian models. These entries
verify that your vehicle has received the speci-
fied regular maintenance.<

Maintenance
122
Socket for On-Board
Diagnosis OBD
Primary components that make up exhaust
emissions can be checked by a device via the
OBD socket.
This socket is located on the driver's side to the
left, on the bottom of the instrument panel
underneath a cover.
Exhaust emission values
The warning lamp lights up:
The exhaust emission values have
worsened. Have the car checked as
soon as possible.
Canadian models display this warning
lamp.
The lamp flashes under certain conditions. This
indicates excessive misfiring in the engine. If
this happens, you should reduce your speed
and visit your nearest BMW center as soon as
possible. Severe engine misfiring can quickly
lead to serious damage of emissions-related
components, especially the catalytic converter.
The warning lamp comes on if the gas
cap is not properly tightened and the
OBD system assumes that fuel vapor
is escaping. If the gas cap is then tightened, the
warning lamp should go out within a few days.
Event data recorders
Your vehicle may be equipped with one or sev-
eral measuring or diagnostic modules or a
device for recording or sending certain vehicle
data or information. In addition, if you have
signed a service contract for BMW Assist, cer-tain vehicle data may be transmitted or
recorded in order to facilitate the corresponding
services.

Reference
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123
Care
Care products
Regular cleaning and care contributes signifi-
cantly to the value retention of your BMW.
BMW recommends cleaning and caring for your
vehicle with products that are approved by
BMW for this purpose.
Your BMW center will be happy to advise you on
the products and services available for cleaning
and caring for your BMW.
Original BMW CareProducts have been
material tested, laboratory checked and
proven in the field, and offer optimal care and
protection for your vehicle.<
Do not use cleaners that contain alcohol
or solvents as these may result in dam-
age.<
Cleaning agents can contain substances
that are dangerous or hazardous to your
health. Therefore, follow the warning and safety
instructions on the packaging. When cleaning
inside the vehicle, always open the doors or
windows of the vehicle. In enclosed areas, pro-
vide for sufficient ventilation. Only use products
designed for cleaning vehicles.<
Exterior care
Washing the vehicle
Especially during the winter months,
ensure that the vehicle is washed more
frequently. Heavy soiling and road salt can lead
to vehicle damage.<
After washing the vehicle, apply the
brakes briefly to dry them, otherwise
water can reduce braking efficiency over the
short term and the brake discs can corrode.<
Automatic car washes
Preference should be given to cloth car washes.Do not use high-pressure car washes,
otherwise water may drip into the vehicle
around the windows.<
Before driving into a car wash, ensure that it is
suitable for your BMW. Check the following:
>Dimensions of your vehicle, refer to
page153.
>If necessary: fold in the exterior mirrors,
refer to page41.
>Maximum permissible tire width.
Preparations before driving into an automatic
car wash:
>Deactivate the rain sensor
* to avoid unin-
tentional activation of the wipers.
>Remove additional attachments, e.g.
spoiler or telephone antennas, if there is a
possibility that they could be damaged.
M dual clutch transmission
Before driving into an automatic car wash, per-
form the following steps to ensure that the vehi-
cle can roll:
1.Insert the remote control, even with conve-
nient access, into the ignition lock.
2.Engage transmission position N.
3.Release the parking brake.
4.Switch off the engine.
5.Leave the remote control in the ignition lock
so that the vehicle can roll.
Steam jets / high-pressure washers
When using steam jets or high-pressure
washers, ensure that you maintain a suffi-
cient clearance to the vehicle and do not exceed
a temperature of 1407/606.
Insufficient clearance or excessive pressure or
temperature can lead to component damage or
water penetration. Follow the operating instruc-
tions of the high-pressure washer.<
When using high-pressure washers, do
not spray against the sensors and cam-