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WE28 - Re-programming the Airbag Control Unit (Workshop Campaign)

Important:

CRITICAL WARNING - THIS CAMPAIGN INCLUDES STEPS WHERE SEVERAL CONTROL UNITS IN
THE VEHICLE WILL BE PROGRAMMED WITH THE PIWIS TESTER. IT IS CRITICAL THAT THE VEHICLE
VOLTAGE BE BETWEEN 13.5 VOLTS AND 14.5 VOLTS DURING THIS PROGRAMMING. OTHERWISE, THE
PROGRAMMING COULD FAIL RESULTING IN DAMAGED CONTROL UNITS. CONTROL UNITS DAMAGED BY
INADEQUATE VOLTAGE WILL NOT BE COVERED UNDER WARRANTY. THE TECHNICIAN MUST VERIFY THE
ACTUAL VEHICLE VOLTAGE IN THE INSTRUMENT CLUSTER OR IN THE PIWIS TESTER BEFORE STARTING
THE CAMPAIGN AND ALSO DOCUMENT THE ACTUAL VOLTAGE ON THE REPAIR ORDER. IT IS ALSO
ADVISABLE TO MONITOR THE VEHICLE VOLTAGE DURING THE PROGRAMMING VIA THE INSTRUMENT
CLUSTER. PLEASE REFER TO EQUIPMENT INFORMATION EQ-1105 FOR A LIST OF SUITABLE BATTERY
CHARGERS/POWER SUPPLIES WHICH SHOULD BE USED TO MAINTAIN VEHICLE VOLTAGE.

Model Year:

As of 2014 up to 2015

Model Line:

Macan

Concerns:

Airbag control unit

Information:

This is to inform you of a voluntary Workshop Campaign on the above-mentioned vehicles. If the
passenger airbag is not switched off on the affected vehicles, there is a possibility that the
PASSENGER AIRBAG ON light will sporadically only go out about 5 minutes after the ignition is
switched on.
This does not comply with the specifications in the Owner's Manual, according to which the PASSENGER
AIRBAG ON light comes on for about 1 minute after the ignition has been switched on and then goes out if
the passenger's airbag is not switched off.

Action required: Reprogram the airbag control unit with modified software to ensure that the light always works as
described in the Owner's Manual.
Affected
Vehicles:

The VIN(s) can be checked by using PIWIS Vehicle Information link to verify if the campaign affects the
vehicle. This campaign is scope specific to the VIN! Failure to verify in PIWIS may result in an improper
repair.
This campaign affects only one vehicle in North America:
WP1AF2A54FLB90058.

Tools:

•
•

9818 - PIWIS Tester II with PIWIS Tester software version 14.800 (or higher) installed.
Battery charger or power supply, suitable for AGM type batteries, recommended current rating of
70A fixed voltage 13.5V to 14.5V

2014© Porsche Cars North America, Inc.

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Work
Procedure:

See Attachment “A”.

Claim
Submission:

See Attachment “B”.

Attachment "A"
NOTICE
Fault entry in the fault memory and control unit programming aborted due to low voltage.
•

Increased current draw during diagnosis or control unit programming can cause a drop in voltage, which
can result in one or more fault entries and the abnormal termination of the programming process.



Before starting control unit programming, connect a battery charger or power supply, suitable for AGM
type batteries, recommended current rating of 70A fixed voltage 13.5V to 14.5V.

NOTICE
Control unit programming will be aborted if the Internet connection is unstable.
•

An unstable Internet connection can interrupt communication between PIWIS Tester II and the vehicle
communication module (VCI). As a result, control unit programming may be aborted.



During control unit programming, always connect PIWIS Tester II to the vehicle communication module
(VCI) via the USB cable.

NOTICE
Control unit programming will be aborted if the vehicle key is not recognized
•

If the vehicle key is not recognized in vehicles with Porsche Entry & Drive, programming cannot be started
or will be interrupted.



Switch on the ignition using the original vehicle key. To do this, replace the original vehicle key in the
ignition lock with the plastic key fob if it was previously removed at the start of this procedure.

Work Procedure: 1

Carry out general preliminary work for control unit programming as described in  Workshop
Manual '9X00IN Basic instructions and procedure for control unit programming using the PIWIS
Tester - section on "Preliminary work"'.

Re-programming the airbag control unit
Work Procedure: 1

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Re-program the airbag control unit.

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The basic procedure for programming a control unit is described in the Workshop Manual 
Workshop Manual '9X00IN Basic instructions and procedure for control unit programming using the
PIWIS Tester - section on "Programming"'.
Specific information on control unit programming during this campaign:
Required PIWIS Tester software version:

14.800 (or higher)

Type of control unit programming:

Control unit programming using the 'Campaign'
function in the Additional menu (•F7“) on the
PIWIS Tester by entering a programming code.

Programming code:

Q8Q7J

Programming sequence:

Read and follow the information and instructions
on the PIWIS Tester during the guided
programming sequence.
The airbag control unit is re-programmed during
the programming sequence.
Do not interrupt programming.
Once the control units have been programmed, the
PIWIS Tester will prompt you to switch the ignition
off and then back on again after a waiting time of
approx. 10 seconds.

Programming time (approx.):

2 minutes

Software version programmed during this
campaign:

0090

Procedure in the event of error messages
appearing during the programming
sequence:

 Workshop Manual '9X00IN Basic instructions and

Procedure in the event of abnormal
termination of control unit programming:

Repeat control unit programming by entering the
programming code again.

2014© Porsche Cars North America, Inc.

Following control unit programming, the software
version can be read out of the airbag control unit
in the  'Extended identification' menu using the
PIWIS Tester.

procedure for control unit programming using the
PIWIS Tester - section on "Troubleshooting"'.

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Information
Once the airbag control unit has been programmed, it must be locked using the PIWIS Tester. The control
unit is first coded and then locked. For details of procedure see the  Technical Information 'WE2800
Locking the airbag control unit' section.
If an airbag control unit is unlocked, the fault memory entry "U101300 – airbag control unit, not coded" is
stored in the fault memory. The fault memory entry can only be deleted after the airbag control unit has
been successfully locked.

Locking the airbag control unit
Work Procedure: 1

2

Select the 'Airbag' control unit in the control unit
selection screen (Menu  'Overview') and press
•>>“ to confirm your selection  Airbag control
unit.
Once the airbag control unit has been found
and is displayed in the list, select the  ' Maintenance/repairs' menu.

Airbag control unit
3

Select menu item  ‘Lock’ and perform the guided
procedure with the PIWIS Tester  Lock menu item.
During this process, the airbag control unit is first
coded and then locked. Read the information
displayed and follow the instructions for the PIWIS
Tester.

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Once the coding has been performed, the message
"Coding has been completed successfully" appears.
Confirm the message by pressing •>>“.

Lock menu item

After a certain waiting time, the airbag control unit is locked. Once the control unit has been
unlocked, the message “Coding has been completed successfully” appears again.
Confirm the message by pressing •>>“.

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The message "Control unit was successfully" is
then displayed as well as the overall status of the
"Coding/locking" procedure  Overall lock status
display.
Confirm the message by pressing •>>“ in
order to return to the homepage of the  'Maintenance/Repairs' menu.

7

Select the  'Overview' menu and press •