data BMW 325CI COUPE 2004 E46 Repair Manual

125
1Brake fluid reservoir128
2Engine oil dipstick126
3Coolant expansion tank128
4Reservoir for the headlamp and
windshield washer system126
5Engine oil filler neck127
6Auxiliary terminal for jump-
starting147Engine compartment essentials
OverviewControlsMaintenanceRepairsDataIndex

127
Adding engine oilOnly add engine oil when the oil level
has dropped to just above the lower
mark on the dipstick.
Continuous exposure to used oil
has caused cancer in laboratory
testing. For this reason, any skin areas
that come into contact with oil should
be thoroughly washed with 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 operation
and service life of an engine. Based on
extensive testing, BMW has approved
only certain grades of engine oil.
Use only approved BMW High Perfor-
mance Synthetic Oil.
If an approved BMW High Performance
Synthetic Oil should be unavailable, you
may use small amounts of other syn-
thetic oils for topping up between oil
changes. Use only oils with the specifi-
cation API SH or higher.
Ask your BMW center for details
concerning the specific BMW
High Performance Synthetic Oil or syn-
thetic oils that have been approved.<
BMW engines are designed to
operate without oil additives; the
use of additives could even lead to
damage in some cases.<
You can also call BMW of North Amer-
ica toll-free at 1-800-831-1117 or visit
this website: www.bmwusa.com to
obtain this information.Viscosity ratingsViscosity is the oilflow rating as estab-
lished in SAE classes.
The selection of the correct SAE class
depends on the climatic conditions in
the area where you drive your BMW.
Approved oils are in SAE classes
5W-40 and 5W-30.<
These kinds of oil may be used for driv-
ing in all ambient temperatures.
Engine oil
OverviewControlsMaintenanceRepairsDataIndex

129
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.
Brake fluid loss may result in extended
brake pedal travel.
Brake fluid is hygroscopic, that is,
it absorbs moisture from the air
over time.
In order to ensure the brake system's
safety and reliability, have the brake
fluid changed every two years by a
BMW center. Refer 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 which is out of reach of chil-
dren.
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.<
Brake fluid
OverviewControlsMaintenanceRepairsDataIndex

131
Have your BMW center perform
maintenance and repair.
Be sure that all maintenance work is
recorded in the Service and Warranty
Information Booklet for US models, or
in the Warranty and Service Guide
Booklet for Canadian models. These
entries are your verification of regular
maintenance on your vehicle and are
required for the performance of war-
ranty repairs.<
CareYou can find everything you need to
know on this topic by consulting the
separate Caring for your vehicle bro-
chure.BMW Maintenance System
OverviewControlsMaintenanceRepairsDataIndex

132Laws and regulations
California lawsProposition 65 warningCalifornia laws require us to state the
following warning:
Engine exhaust and a wide variety
of automobile components and
parts, including components found in
the interior furnishings in a vehicle, con-
tain or emit chemicals known to the
State of California to cause cancer and
birth defects and reproductive harm. In
addition, certain fluids contained in
vehicles and certain products of com-
ponent wear contain or emit chemicals
known to the State of California to
cause cancer and birth defects or other
reproductive harm.
Battery posts, terminals and related
accessories contain lead and lead com-
pounds. Wash your hands after hand-
ling.
Used engine oil contains chemicals that
have caused cancer in laboratory ani-
mals. Always protect your skin by
washing thoroughly with soap and
water. 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.
OBD interface socketThe interface socket for onboard diag-
nostics is located on the left-hand side
of the driver's side, below the instru-
ment panel and under a cover panel.
The cover has the letters OBD on it.
This interface makes it possible to
access data on emissions-related com-
ponents using special equipment.
An illuminated indicator informs
you of the need for service, not
that you need to stop the vehi-
cle. However, the systems should be
checked by your BMW center 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

133
engine misfiring for even a short period
of time can seriously damage emission
control system components, especially
the catalytic converter.
Service Engine Soon warning
lamp for Canadian models.
If the gas cap is not on tight
enough, the OBD system can
detect leaking vapor and the indicator
will light up. If the gas cap is then tight-
ened, the indicator will usually go out
after a short period of time. OverviewControlsMaintenanceRepairsDataIndex

135
Overview
Controls and features
Operation, maintenance
Owner service procedures
Technical data
Index
OverviewControlsMaintenanceRepairsDataIndex

137
Lamps and bulbsThe lamps and bulbs make essential
contributions to the safety of your vehi-
cle. Therefore, proceed carefully when
handling bulbs. BMW recommends that
you have such work performed by your
BMW center if you are not familiar with
the procedures.
Do not touch the glass portion of
a new bulb with your bare hands
since even small amounts of impurities
burn in to the surface and reduce the
service life of the bulb. Use a clean
cloth, paper napkin, or a similar mate-
rial, or hold the bulb by its metallic
base.<
A replacement bulb set is available from
your BMW center.
Before working on the electrical
system, switch off the electrical
accessory you are working on or dis-
connect the cable from the negative
terminal of the battery. Failure to
observe this precaution could result in
short circuits.
To prevent injuries and damage, com-
ply with any instructions provided by
the bulb manufacturer.<
Low beamsH7 bulb, 55 watt
Engine compartment, left side:
The H7 bulb is pressurized. There-
fore, wear safety glasses and pro-
tective gloves. Failure to comply with
this precaution could lead to injury if the
bulb is damaged.<
1. Remove the cover of the headlamp
by pressing the tab and lifting the
cover off
2. Pull off the plug
3. Release the retaining wire
4. Remove and replace the bulb.
When cleaning the headlamps,
please follow the instructions in
the Caring for your vehicle brochure.<
OverviewControlsMaintenanceRepairsDataIndex

139
Front turn signal indicators21 watt bulb
1. Turn the bulb holder with the plug to
the left and remove
2. Pull the bulb off and replace it.
When replacing the bulb on the
right, loosen and lift the reservoir
for the headlamp and windshield
washer system if necessary.<
Side turn signal indicators1. Press the front edge of the lamp
toward the back with the tip of your
finger and remove
2. Pull off the plug and replace the
entire lamp.
The side turn signal indicator is
designed using LED technology. If
faulty, the entire side turn signal indica-
tor must be replaced.<
Rear lamps1Turn signal indicator
LEDs
2Backup lamp
21 watt bulb
3Tail lamp/brake lamp
LEDs
Please contact a BMW center in
case of a defect with the LED
lamps.<
Lamps and bulbs
OverviewControlsMaintenanceRepairsDataIndex

141
License plate lamps5 watt bulb
1. Place a screwdriver in the slot and
press toward the left to release the
lens
2. Replace the bulb.Light-emitting diodesLight-emitting diodes (LEDs) installed
behind translucent lenses serve as the
light sources for many of the controls
and displays in your vehicle. These
light-emitting diodes are related to con-
ventional lasers, and legislation defines
them as light-emitting diodes, Class 1.
Do not remove the protective lens,
and avoid staring directly at the
unfiltered beam for several hours, as
inflammation of the retina could
result.<
Changing a wheel
Safety precautions in the event of
a flat tire or wheel change:
Stop the vehicle as far as possible from
passing traffic. Park on a firm, flat sur-
face. Switch on the hazard warning
flashers. Turn the steering wheel to the
straight-ahead position and engage the
steering lock. Shift into 1st or Reverse,
or if you have an automatic transmis-
sion position the selector lever in Park,
and engage the parking brake.
All passengers should be outside the
vehicle and well away from your imme-
diate working area, behind a guardrail,
for example.
If a warning triangle or portable hazard
warning lamp is available, set it up on
the roadside at an appropriate distance
from the rear of the vehicle. Comply
with all local safety guidelines and reg-
ulations.
Change the wheel only on a level, firm
surface which is not slippery. Avoid
jacking the vehicle on a soft or slippery
support surface – snow, ice, loose
gravel, etc. – as either the vehicle or the
jack could slip sideways.
Position the jack on a firm support sur-
face.
Do not place wooden blocks or similar
objects under the jack. They could pre-
vent the jack from extending to its full
Lamps and bulbs
OverviewControlsMaintenanceRepairsDataIndex