BMW ICOM is the latest BMW diagnostic tool that allows access to various diagnostic systems in contemporary BMW models. To use a BMW ICOM, connect it to the vehicle's data link connector located under the dashboard and turn the ignition on. The BMW ICOM will then establish a connection and retrieve active trouble codes. These codes can be looked up online to determine what systems they correspond to and help diagnose issues with the vehicle.

1. How to use BMW ICOM A+B+C???
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BMW ICOM is the latest BMW diagnostic tool
All contemporary BMW models use a variety of
diagnostic systems. Accessing all of them requires
specialized hardware. Depending on the system you wish
to engage, obtaining a BMW scanner or code reader
(such as BMW ICOM-the newest BMW diagnostic tool)
can be either difficult or hard and costly. Second
generation On-Board Diagnostic scanners are the most
prevalent and easy to find. Other systems, such as
Supplemental Restraint System air bags, are not readily
available to the general consumer. No matter the system,
the process of retrieving codes and arriving at a diagnosis
is similar.
BMW ICOM Instructions
1) Open the BMW's driver-side door. Look into the leg-

2. space beneath the dashboard. There, you will find 16 pin-
receiving Data Link Connector. This DLC outlet is
featured in different locations, depending on the model of
BMW you are working with. Some may readily seen, but
others may be concealed behind an access panel. Should
you have trouble locating your BMW's DLC outlet, there
is an online application that could assist (see Resources).
2) Connect your BMW ICOM to the DLC outlet. For
most BMW ICOMs, this is a similar process. A scanner
or a code reader typically comes with a diagnostic cable
with a 16-prong plug. Connect the cable to the BMW
ICOM, and plug the cable into the DLC outlet.
Switch your BMW ICOM on. Then slide your BMW's
key into the vehicle's ignition. Switch to "On." This will
activate the BMW's electrical array. Depending on the
BMW ICOM and the system you are working with, you
may also need an active engine. If this is the case, start
the automobile's engine at this time.
4) Wait a few seconds to a minute. Your BMW ICOM
and the vehicle's diagnostic system will establish a
connection. Some BMW scanners, once an incoming
data stream is detected, will automatically retrieve active

3. trouble codes. If you do not possess a BMW ICOM
preprogrammed to do this, consult your BMW ICOM's
handbook. Button configurations and general layout
differ by brand and type of diagnostic handheld. Your
BMW ICOM's handbook will detail the exact
instructions on how to enter a code-retrieving command.
5) Look through the codes on your BMW ICOM's
display screen. How the codes are displayed also
depends on the BMW diagnostic tools you are using.
OBD-II codes are alphanumeric, and the first letter of the
trouble code will specify where the problem is located.
Anti-locking brake codes tend to be purely numerical.
Many BMW scanners will also differentiate a code's
status. Any code listed as "pending" are infrequent
malfunctions; these problems have not activated one of
your BMW's warning lights.
6) Copy the active trouble codes onto a separate sheet of
paper. If you are using more than BMW ICOM and
troubleshooting more than one diagnostic system, make
sure you categorize this list. Columns are useful ways to
organize trouble codes. This is also true for OBD-II
diagnostics, which acts as an umbrella for many types of

4. codes. For instance, P-codes cover the BMW's
powertrain, while B, C, and U codes cover the body,
chassis and network communications system.
7) Look up each code pulled from the BMW. BMW
ICOM handbooks will contain coding definitions. OBD-
II scanners, for example, offer generic coding lists good
for all post-1996 vehicles. However, you will have to go
online to find BMW's supplemental OBD-II codes. As a
general rule, a vehicle's owner's manual will not contain
coding definitions for any diagnostic system. However,
trouble codes can easily be found online (see Resources).
Here are I supply a PDF file which lists coding
definitions:
8) Copy the appropriate definitions to their
corresponding trouble codes. Read through all of the
definitions and make a decision. If you have the
mechanical experience, you can attempt DIY fixes on
some of the problems. However, some diagnostic
systems, like ABS brakes, are very complex and should
be deferred to a trained mechanic.
9) Take your code list with you, if you decide to consult a
BMW-certified mechanic. This list will save you money

5. in diagnostic fees.

6. in diagnostic fees.