technical data BMW 325xi SEDAN 2003 E46 Owner's Manual
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Congratulations, and thank you for choosing a BMW.
Thorough familiarity with your vehicle will provide you with enhanced control and 
security when you drive it. Therefore we have one request:
Please take the time to read this Owner's Manual and familiarize yourself with the 
information that we have compiled for you before starting off in your new BMW. The 
manual contains important data and instructions intended to assist you in obtaining 
maximum satisfaction from your BMW's unique array of advanced technical fea-
tures. It also contains information on vehicle maintenance designed to enhance 
operating safety while simultaneously helping you to maintain your BMW's value 
throughout an extended service life. For additional information refer to the supple-
mental manuals.
This Owner's Manual should be considered a permanent part of this vehicle. It 
should stay with the vehicle when sold to provide the next owner with important 
operating, safety and maintenance information.
We wish you an enjoyable driving experience.
BMW AG 
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Contents
 
Operation, maintenance
 
Special operating instructions:
 
Break-in procedures114
Driving notes115
Antilock Brake System 
(ABS)115
Brake system116
 
Wheels and tires:
 
Tire inflation pressure117
Tire condition117
Tire replacement118
Wheel and tire 
combinations120
Winter tires120
 
In the engine compartment:
 
Hood122
Engine compartment 
essentials124
Washer fluids126
Engine oil126
Coolant128
Brake fluid129
 
Maintenance:
 
The BMW Maintenance 
System130
 
Laws and regulations:
 
California Proposition 65 
warning131
OBD interface socket131
 
Owner service procedures
 
Replacement procedures:
 
Onboard tool kit136
Windshield wiper blades136
Lamps and bulbs137
Changing a wheel141
Run Flat tires*145
Battery146
Fuses146
 
Giving and receiving 
assistance:
 
Jump-starting147
Towing the vehicle148
 
Technical data
 
Engine data152
Dimensions153
Weights154
Capacities155 
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13
 
Overview
Controls and features
Operation, maintenance
Owner service procedures
Technical data
Index
 
OverviewControlsMaintenanceRepairsDataIndex 
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Overview
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Operation, maintenance
Owner service procedures
Technical data
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Roof-mounted luggage rack*A special roof-rack system is available 
as an optional extra for your BMW. 
Please observe the precautions 
included with the installation instruc-
tions.AnchoragesAccess to the anchorages:
To fold up the cover – see arrow – 
please use the tool provided with the 
roof-rack system.Loading and driving notesRoof-mounted luggage racks raise the 
center of gravity of the vehicle when 
they are loaded. For this reason, they 
exercise a major effect on the vehicle's 
handling and steering response.
You should therefore always remember 
not to exceed the approved roof load 
capacity, the approved gross vehicle 
weight or the axle loads when loading 
the rack. These weights are listed under 
Technical data on page 154.
Make sure that the load is not too 
heavy, and attempt to distribute it 
evenly. Always load the heaviest pieces 
first so that they are at the bottom. Be 
sure that adequate clearance is main-
tained for raising the sliding/tilt sunroof, 
and that objects do not project into the 
opening path of the luggage compart-
ment lid.
Secure the roof-mounted luggage cor-
rectly and securely to prevent it from 
shifting or being lost during driving.
Drive smoothly and avoid sudden 
acceleration and braking. Do not corner 
at high speeds.
The roof-mounted luggage rack and the 
roof load increase the aerodynamic 
resistance: increased fuel consumption 
and additional stress on the vehicle's 
body are the result. 
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Owner service procedures
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Lamps and bulbsThe lamps and bulbs make essential 
contributions to the safety of your vehi-
cle. Therefore, comply fully with the fol-
lowing instructions during bulb replace-
ment. If you are not familiar with any of 
the procedures, consult your BMW 
center.
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 beams and high beamsEngine compartment, left side:
1Low beams
2High beams
H7 bulb, 55 watts
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. Turn the two release catches at the 
front to the left – see arrow – to 
remove the bulb holder
2. Remove and replace the bulb.
When cleaning the headlamps, 
please follow the instructions in 
the Caring for your vehicle brochure.<
Xenon lamps*The service life of these bulbs is very 
long and the probability of a failure is 
very low, provided that they are not 
switched on and off an unusual number 
of times. If one of these bulbs should 
nevertheless fail, it is possible to con-
tinue driving with great caution using 
the fog lamps, provided local traffic 
laws do not prohibit this.
Because of the extremely high 
voltages involved, any work on the 
xenon lighting system, including bulb-
changing, should be carried out by 
technically-qualified personnel only. 
Otherwise, there is a risk of fatal 
injury.<
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