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2010 BMW 328I Service & Repair Manual Software
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Important Safety Notice .......................................................... ............................... ii
Foreword .............................................................................................................. v
Index ........... ... .................................................................................. rear of manual
0
General Data and
001 Warnings and Cautions 003 Symptoms and Field Observations
~
Maintenance
002 Vehicle Identification and VIN 010 Product Fami li arization
Decoder 020 Maintenance
100 Engine-General 120 Ignition System
~
1
110 Engine Removal and Installation 121 Battery, Starter, Alternator
Engine
113 Cylinder Head Removal 130 Fuel Injection
and Installation 160 Fuel Tank and Fuel Pump
117 Camshaft Timing Chain 170 Radiator and Cooli ng System
119 Lu brication System 180 Exhaust System
2
200 Transmission-General 250 Gearshift Linkage
~
Transmission
210 Clu tch 260 Driveshafts
230 Manual Transmission 270 Transfer Case
240 Automatic Transmission
3
Suspension, 300 Suspension, Steering and 320 Steering and Wheel Alignment
~
Steering and
Brakes-General 330 Rear Suspension
310 Front Suspension 331 Rear Axle Differential
Brakes
311 Front Axle Differential 340 Brakes
4
Body
400 Body-General 411 Doors
~
410 Fenders, Engine Hood 412 Trunk Lid, Tailgate
5
Body Equipment
510 Exterior Trim, Bumpers 515 Central Locking and Anti-theft
~
512 Door Windows 520 Seats
513 Interior Trim 541 Convertible Top
6
600 Electrical System-General 630 Lights
~
Electrical System
611 Wipers and Washers 640 Heating and Air-conditioning
612 Switches 650 Radio
620 Instruments
7
Equipment and 720 Seat Belts
~
Accessories
721 Airbag System (SRS)
ECL
ECL Electrical Component Locations
~
ELE
ELE Electrical Wiring Diagrams
080
OBD On-Board Diagnostics
BentleyPublishers
Be <'tloyr>i.bl1sh rs.corr All I? gl>ts Ro ern;a

Foreword
For the BMW owner with basic mechanical skills and for independent auto service professionals, this
manual includes many of the specifications and procedures that were available in an authorized
BMW dealer service department as this manual went to press. The BMW owner with no intention of
working on his or her car will find that owning and referring to this manual will make it possible to be
better informed and to more knowledgeably discuss repairs with a professional automotive
technician.
For those intending to do maintenance and repair on their BMW, it is essential that safety
equipment be used and safety precautions observed when working on the vehicle. A minimum
safety equipment list includes hand protection, eye protection and a fire extinguisher. A selection
of good quality hand tools is also needed. This includes a torque wrench to ensure that fasteners
are tightened in accordance with specifications. In some cases, the text refers to special tools that
are recommended or required to accomplish adjustments or repairs. These tools are often
identified by their BMW special tool number and illustrated.
Disclaimer
We have endeavored to ensure the accuracy of the information in this manual. When
the vast array of data presented in the manual is taken into account, however, no
claim to infallibility can be made. We therefore cannot be responsible for the result of
any errors that may have crept into the text. Please also read the WARNING-
Importa nt Safety Notice on the copyright page at the beginning of this book.
Prior to starting a repair procedure, read the procedure, 001 Warni n gs and
Ca utions and the warnings and cautions that accompany the procedure. Reading
a procedure before beginning work helps you determine in advance the need for
specific skills, identify hazards, prepare for appropriate capture and handling of
hazardous materials, and the need for particular tools and replacement parts such
as gaskets.
Bentley Publishers encourages comments from the readers of this manual with regard to errors,
and suggestions for improvement of our product. These communications have been and will be
carefully considered in the preparation of this and other manuals. If you identify inconsistencies in
the manual, you may have found an error. Please contact the publisher and we will endeavor to
post applicable corrections on our website. Posted updates and corrections should be reviewed
before beginning work. Please see the following web address:
http://www . BentleyPublishers.com/updates/
BMW will continue to issue service information and parts retrofits after the editorial closing of this
manual. Some of this updated information may apply to procedures and specifications in this
manual. For the latest information, please see the following web address:
http://www.bmwtechinfo.com/
BMW offers extensive warranties, especially on components of the fuel delivery and emission
control systems. Therefore, before deciding to repair a BMW that may be covered wholly or in part
by any warranties issued by BMW of North America, LLC, consult your authorized BMW dealer.
You may find that the dealer can make the repair either free or at minimum cost. Regardless of its
age, or whether it is under warranty, your BMW is both an easy car to service and an easy car to
get serviced. So if at any time a repair is needed that you feel is too difficult to do yourself, a trained
BMW technician is ready to do the job for you.
Bentley Publishers
v

001-1
001
Warnings and Cautions
PLEASE READ THESE WARNINGS AND CAUTIONS
BEFORE PROCEEDING WITH MAINTENANCE AND REPAIR WORK.
WARNINGS-
See also CAUTIONS
• Read the important safety notice on the copyright page at the
beginning of the book.
• Some repairs may be beyond your capability. If you lack the skills,
tools and equipment or a suitable workplace for any procedure
described in this manual, we suggest you leave such repairs to
an authorized BMW dealer service department or other qualified
shop.
• Thoroughly read each procedure and the WARNINGS and
CAUTIONS that accompany the procedure. Also review posted
corrections atwww.BentleyPublishers.com/updates/
before beginning work.
• If any procedure, tightening torque, wear limit, specification or
data presented in this manual does not appear to be appropriate
for a specific application, contact the publisher or the vehicle
manufacturer for clarification before using the information in
question.
• Do not reuse any fasteners that are worn or deformed. Many
fasteners are designed to be used only once and become
unreliable and may fail when used a second time. This includes,
but is not limited to, nuts, bolts, washers, self-locking nuts or
bolts, circlips and cotter pins. Replace these fasteners with new
parts.
• Do not work under a lifted car unless it is solidly supported on
stands designed for the purpose. Do not support a car on cinder
blocks, hollow tiles or other props that may crumble under
continuous load. Do not work under a car that is supported solely
by a jack. Do not work under the car while the engine is running.
• If you are going to work under a car on the ground, make sure that
the ground is level. Block the wheels to keep the car from rolling.
Disconnect the battery negative ( -) terminal to prevent others
from starting the car while you are under it.
• Do not run the engine unless the work area is well ventilated.
Carbon monoxide kills.
• Remove rings, bracelets and other jewelry so that they cannot
cause electrical shorts, get caught in running machinery, or be
crushed by heavy parts.
• Tie long hair behind your head. Do not wear a necktie, a scarf,
loose clothing, or a necklace when you work near machine tools
or running engines. If your hair, clothing, or jewelry were to get
caught in the machinery, severe injury could result.
• Do not attempt to work on your car if you do not feel well. You
increase the danger of injury to yourself and others if you are
tired, upset or have taken medication or any other substance that
may keep you from being fully alert.
• illuminate your work area adequately but safely. Use a portable
safety light for working inside or under the car. Make sure the bulb
is enclosed by a wire cage. The hot filament of an accidentally
broken bulb can ignite spilled fuel, vapors or oil.
• Catch draining fuel, oil, or brake fluid in suitable containers. Do
not use food or beverage containers that might mislead someone
into drinking from them. Store flammable fluids away from fire
hazards. Wipe up spills at once, but do not store the oily rags,
which can ignite and burn spontaneously.
• Observe good workshop practices. Wear goggles when you
operate machine tools or work with battery acid. Wear gloves or
other protective clothing whenever the job requires working with
harmful substances.
• Greases, lubricants and other automotive chemi cals contain toxic
substances, many of which are absorbed directly through the
skin. Read the manufacturer's instructions and warnings
carefully. Use hand and eye protection. Avoid direct skin contact.
• Disconnect the battery negative (-) terminal whenever you work
on the fuel system or the electrical system. Do not smoke or work
near heaters or other fire hazards. Keep an approved fire
extinguisher handy.
• Friction materials (such as brake pads and shoes or clutch discs)
contain asbestos fibers or other friction materials. Do not create
dust by grinding, sanding, or by cleaning with compressed air.
Avoid breathing dust. Breathing any friction material dust can
lead to serious diseases and may result in death.
• Batteries give off explosive hydrogen gas during charging. Keep
sparks, lighted matches and open flame away from the top of the
battery. If hydrogen gas escaping from the cap vents is ignited, it
may ignite gas trapped in the cells and cause the battery to
explode.
• The air-conditiorning system is filled with chemical refrigerant,
which is hazardous. Make sure the system is serviced only by a
trained technician using approved refrigerant recovery/recycling
equipment, trained in related safety precautions, and familiar with
regul ations governing the discharge and disposal of automotive
chemical refrigerants.
Continued on next page

001-2 Warnings and Cautions
WARNINGS (continued)
• Do not expose any part of the A/C system to high temperatures
such as open flame. Excessive heat increases system pressure
and may cause the system to burst.
• Some aerosol tire inflators are highly flammable. Be extremely
cautious when repairing a tire that may have been inflated using
an aerosol tire inflater. Keep sparks, open flame or other sources
of ignition away from the tire repair area. Inflate and deflate the
tire at least four times before breaking the bead from the rim.
Completely remove the tire from the rim before attempting any
repair.
• Cars covered by this manual are equipped with a supplemental
restraint system (SAS) that automatically deploys airbags and
pyrotechnic seat belt tensioners in case of a frontal or side
impact. These are explosive devices. Handled improperly or
without adequate safeguards, they can be accidently activated
and cause serious injury.
• The ignition system produces high voltages that can be fatal.
Avoid contact with exposed terminals and use extreme care when
working on a car with the engine running or the ignition switched
ON.
• Place jack stands only at locations specified by the manufacturer.
The vehicle lifting jack supplied with the vehicle is intended for tire
changes only. Use a heavy duty floor jack to li ft vehicle before
installing jack stands. See 020 Maintenance.
• Battery acid (electrolyte) can cause severe burns. Flush contact
area with water, then seek medical attention.
• Aerosol cleaners and solvents may contain hazardous or deadly
vapors and are highly flammabl e. Use only in a well ventilated
area. Do not use on hot surfaces (engines, brakes, etc.).
• Due to risk of personal injury, be sure the engine is cold before
beginning work on the cooling system.
CAUTIONS-
See also WARNINGS
• If you lack the skill s, tools and equipment, or a suitable workshop
for any procedure described in this manual, leave such repairs to
an authorized BMW dealer or other qualifi ed shop.
• BMW is constantly improving its cars and sometimes these
changes, both in parts and specifications, are made applicable to
earlier models. Any part numbers listed in this manual are for
reference only. Check with your authorized BMW dealer parts
department for the latest information.
• Before starting a job, make certain that you have the necessary
tools and parts on hand. Read all the instructions thoroughly, and
do not attempt shortcuts. Use tools appropriate to the work and
use only replacement parts meeting BMW specifications.
• Use pneumatic and electric tools only to loosen threaded parts
and fasteners. Do not use these tools to tighten fasteners,
especially on light alloy parts. Use a torque wrench to tighten
fasteners to the tightening torque specification listed.
• Be mindful of the environment and ecology. Before you drain the
crankcase, find out the proper way to dispose of the oil. Do not
pour oil onto the ground, down a drain, or into a stream, pond or
lake. Dispose of waste in accordance with federal, state and
local laws.
• The control module for the anti-lock brake system (ABS) cannot
withstand temperatures from a paint-drying booth or a heat l amp
in excess of 203°F (95°C). Do not subject to temperatures in
excess of 185 °F (85°C) for more than two hours.
• Before doing any electrical welding on cars equipped with ABS,
disconnect the battery negative (-) terminal (ground strap) and
the ABS control module connector.
• Make sure ignition is switched OFF before disconnecting battery.
• Label battery cables before disconnecting. On some models,
battery cables are not color coded.
• Disconnecting the battery may erase fault code(s) stored in control
module memory. Using special BMW diagnostic equipment, check
for fault codes prior to disconnecting the battery cables. If the
malfunction indicator light (MIL) is illuminated, see OBD On-Boa rd
Diagnostics at the back of this manual. (This light may be
identified as the Check Engine light or the Service Engine Soon
light.) If any other system faults are detected (indicated by an
illuminated warning light), see an authorized BMW deal er.
• If a normal or rapid charger is used to charge battery, disconnect
lhe battery remove it from lhe vehicle in order to avoid damaging
the vehicle.
• Do not quick-charge the battery (for boost starting) for longer
than one minute. Wait at least one minute before boosting the
battery a second time.
• Connect and disconnect a battery charger only with the battery
charger switched OFF.
• Sealed or "maintenance free" batteries should be slow-charged
only, at an amperage rate that is approximately 10% of the
battery's ampere-hour (Ah) rating.
• Do not allow battery charging voltage to exceed 16.5 volts. If the
battery begins producing gas or boiling violently, reduce the
charging rate. Boosting a sulfated battery at a high charging rate
can cause an explosion.
• Do not use steel fasteners on engine components made of
aluminum-magnesium alloy. Use aluminum fasteners only. Test
fasteners for aluminum composition with magnet.
• Replace aluminum bolts each time they are loosened. Follow
torque instructions, including angle of rotation specifications,
when installing aluminum fasteners.

002-1
002
Vehicle Identification and
VIN Decoder n
._____._ ____ •
Some of the information in this manual applies only to cars of a particular model year or range of years. For example, 2006
refers to the 2006 model year but does not necessarily match the calendar year in which the car was manufactured or sold.
To be sure of the model year of a particular car, check the vehicle identification number (VIN) on the car.
The VIN is a unique sequence of 17 characters assigned by BMW to identify each individual car. When decoded, the VIN tells
the country and year of manufacture; make, model and seri al number; assembly plant and even some equipment specifications.
The BMW VIN is on a plate mounted on the top of the dashboard, on the driver's side where the number can be seen through
the windshield. The 10th character is the model year code: 6 for 2006, 7 for 2007, 8 for 2008, 9 for 2009, and A for 2010. The
table below explains some of the codes in the VIN for 2006 through 201 OBMW E90, E91, E92, and E93 3 Series covered
by this manual.
Sample VIN: lWBA ll PK53ll5lXl9lAI 9 9 9 9 9 9 I
position 1 2 3 4 5 6 7 8 9 10 I 12 -17
VIN Description Decoding information
position
1 - 3 Country of WBA BMW, AG. Munich, Germany
manufacture
4 Line
p
3281 xDrive Sedan (2009 - 2010)
u 328i, xDrive Sports Wagon (2009 - 2010)
v 325i, 325xi, 330i. 330xi (2006), 328i Sedan, 328xi Sedan
and Sports Wagon, 335i, 335xl (2007-2009)
w 328i Coupe and Convertible, 328xi Coupe,
335i Convertible (2007-2010)
5 Series A 328i Sedan (2007-2008)
B 325i, 3301, Sedan (2006) 328i Coupe (2007-2009),
335i Sedan and Coupe (2007-2008)
c 328i Sedan (2007), 328xi Sedan and Coupe (2007-2009)
D 325xi Sedan,330xi Sedan (2006),335xiSedan (2007-
2008)
H 328i Sedan (2009 - 201 O)
K 328i xDrive Sedan (2009 - 2010)
L 328i Convertible, 3351 Convertible (2007-201 O)
R 328i Convertible (2007-2010)
T 328xi Sports Wagon (2008), 328i Sports Wagon (2009 - 2010)
u 328xi Sports Wagon (2009 - 2010)
v 3281 xDrlve Coupe (2009 - 2010)
6 Engine type 1 3.0 liter 6-cylinder
3
5
7
9
7 Vehicle type 3, 7 Passenger vehicle {2006·2009)
A,G Passenger vehicle (2010)
8 Restraint system 5 Multiple restraint system
9 Check digit o - 9 or X, calculated by NHTSA
10 Model year 6 2006
7 2007
8 2008
9 2009
A
2010
11 Assembly plant A,F,K Munich, Germany
N, V Leipzig, Germany
E,J,P Regensburg, Germany
12-17 Serial number Sequential production number for specific vehicle
leyPub
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003-1
003
Symptoms and Field Observations
,_____ _ __ ____. I
GENERAL .............................. 003-1
0 GENERAL DATA AND MAINTENANCE ..... 003-2
1 ENGINE .............................. 003-6
2 TRANSMISSION . ................. . .... 003-12
3 SUSPENSION, STEERING AND BRAKES .. 003-14
4 BODY ..... . .......................... 003-18
5 BODY EQUIPMENT. . . . . . . . . . . . . . . . . . . . 003-19
6 ELECTRICAL SYSTEM . . . . . . . . . . . . . . . . . 003-22
7 EQUIPMENT AND A CCESSORIES. . . . . . . . 003-28
GENERAL
This repair group includes a list of symptoms, field observations, and
suggested fixes for common problems and issues found on 3 Series
(E90, E91, E92, and E93) cars.
The information is organized by sections that correspond to the
layout of the repair manual. Additional information (when avail able)
can be found in the repair group associated with the specific issue:
• O General Data and Maintenance
• 1 Engine
• 2 Transmission
• 3 Suspension, Steering and Brakes
• 4 Body
• 5 Body Equipment
• 6 Electrical System
• 7 Equipment and Accessories
This information was developed from varied sources, ranging from
professional BMW technician feedback to manufacturer-issued
technical service bulletins (TSBs). The content is intended to
complement the repair information found in this repair manual.
CAUTION-
• The information contained in this section is inherently dated
material. It was applicable and relevant at the time this manual
went to press. Always check BMW factory repair information at
www.bmwtechinfo.com or the publisher's website at
www.bentleypublishers.com for information that may
supersede any information included in this section.
Be tleyPublishersc
8 rtl y 'Lb t 1'1!.C'OIT' All RlgMs R rv d

003-2 Symptoms and Field Observations
0 GENERAL DATA AND MAINTENANCE
T opic Not es
Exit ing a vehicle that is double-l ocked Do not lock a vehicle from outside the car wi th someone inside the
from the outsi de car.
Service Engine Soon or Check Gas Cap
warning Is illuminated: faulty gas cap
or software error
(t o 09/2008)
Cabin filters, changing
In the unlikely event that someone gets double-locked inside the car,
the person inside the car can exit the vehicle using the following 2-
step procedure:
•Press central unlock button to disable "double-lock".
• Pull door handle twice to open door.
NOTE-
• For vehicles with factory alarm, opening door activates alarm.
DME has stored faults for a small leak, microleak, super fine leak, or
large leak in the tank ventilation or evaporative system.
• Remove the fuel cap and inspect cap seal for damage (torn, worn
or curling seal). If any damage is detected, replace cap. Be sure cap
is properly tightened down.
• If no cap faults can be found and fault returns, additional DMTL sys-
tem diagnosis is required (e.g. run DMTL test plan using the BMW
diagnostic scan tool).
NOTE-
• On vehicles produced from July 1st, 2006 up to September
30th, 2008 with the following stored faults: 2A 15 - DMTL minor
leak, leak greater than 1. O mm or 2A 16 - DMTL microleak, leak
greater than 0.5 mm, there may be a software error for the tank
leak diagnostic system. If these faults are present, be sure the
software level (/-level vehicle data status) is up to date.
When servicing fresh air (cabin) micro filter, be sure to reinstall the
filter lid correctly. Incorrect installation can result in premature blower
motor failure due to water intrusion.
• Check that gap (A) between upper microfilter housing and cowl is
no more than 1 cm (0.40 in). Remove and reposition housing as
necessary to reduce gap.
Additional
Information
(when available)
08 0
020
Bentley Publishers com
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1
llayPubl t>ors com-All Righi~ R e111ed

Symptoms and Field Observations 003-3
0 GENERAL DATA AND MAINTENANCE (CONTINUED)
Additional I
Topic
Engine o il , topping up
Replacing spark plugs , service tip
(N52 / N51 engines)
Special tool for spark plug removal
(N54 engine)
Notes
Oil residue may collect on the cyli nder head cover near the oil filler
cap a few days after topping up or refilling the engine oil.
When oil is added, the filler cap is laid partially upside down. In this
position, engine oil seeps into the area of the oil cap that is not sealed
by the gasket. When the cap is reinstalled, the oil leaks from the
unsealed area onto the cylinder head cover surface.
If investigating an oil leak in this area, confirm that it is not oil from the
cap.
When servicing spark plugs, a standard socket may fit too tightly into
the spark pl ug bore in the cyli nder head. If this is the case, remove
the heat shield insi de plug hole (arrow) before servicing spark plugs.
A 12-point Bosch spark plug with 12 mm threads is used in the N54
(turbocharged) engine. Removal and installation requires a t hi n- wall
socket (BMW special tool part no. 83 30 O 495 560), owing to the
confin ed area of the N54 cylinder head.
lnfonnatlon -
(when available) -
020
020
020
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Discover the 2010 BMW 328I Service & Repair Manual in .OVA file format. This comprehensive manual is designed to assist BMW 328I owners in performing service and repair tasks with ease and efficiency. Whether you are a professional mechanic or a DIY enthusiast, this manual has got you covered.
Key features of the 2010 BMW 328I Service & Repair Manual:
- Provides detailed step-by-step instructions for performing various maintenance procedures on the BMW 328I
- Covers all major systems, including engine, transmission, suspension, electrical, and more
- Includes comprehensive diagrams, illustrations, and technical specifications to aid in the repair process
- Diagnostics tools and troubleshooting guides assist in identifying and resolving common issues
- Compatible with both Windows and Mac operating systems for convenient use on different devices
With the 2010 BMW 328I Service & Repair Manual, you can confidently tackle any repair or service task, saving time and money by avoiding unnecessary trips to the mechanic. Take control of your BMW 328I's maintenance and keep it running smoothly for years to come.