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WLC9

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WLC9 - Re-programming Roof Console (Workshop Campaign)

Important:

CRITICAL WARNING -This campaign includes steps where control unit(s) in the vehicle will be
programmed with the PIWIS Tester. The vehicle voltage must be maintained between 13.5 volts and 14.5
volts during this programming. Failure to maintain this voltage could result in damaged control unit(s).
Damage caused by inadequate voltage during programming is not a warrantable defect. The technician
must verify the actual vehicle voltage in the PIWIS Tester before starting the campaign and also document
the actual voltage on the repair order.

Model Year:

As of 2017 up to 2021

Model line:

Panamera (971)

Equipment:

Passenger's airbag can be deactivated (I-no. 4UF / 4UB)

Subject:

Roof console

Information:

On affected vehicles, a component protection function may deactivate the "PASSENGER
AIR BAG OFF/ON" indicator light in the roof console area at temperatures above 100 °C, for
example, in direct sunlight for a longer period of time. As soon as the temperature drops, the
indicator light function will be activated again.
When the "PASSENGER AIR BAG OFF/ ON" indicator light is deactivated, the airbag warning light comes
on in the instrument cluster. All safety and restraint systems function at all times according to specifications and the fault does not affect occupant protection.

Remedial
Action:

Re-program roof console using the PIWIS Tester.

Information
Programming takes approx. 6 minutes to complete.
Affected
Vehicles:

Only vehicles assigned to the campaign (see also PCSS Vehicle Information). There are 22,612 vehicles
affected by this campaign in North America.

Required tools
Tools:

•
•

9900 - PIWIS Tester 3 with PIWIS Tester software version 39.300.020 (or higher) installed
Battery charger with a current rating of at least 90 A, e.g. VAS 5908 Battery charger 90A

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Preparatory work
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 suitable battery charger with a current rating of at
least 90 A to the vehicle.
NOTICE

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

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



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

Control unit programming will be aborted if the driver's key is not recognized
•

If the driver's key is not recognized in the vehicle, programming cannot be started or will be interrupted.



Place the driver's key with the back facing down into the front left storage compartment in the center
console to guarantee a continuous radio link between the vehicle and the driver's key.

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-program roof console
Work Procedure: 1

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 in the context of this Technical Information:

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WLC9

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Required PIWIS Tester software
version:

39.300.020 (or higher)

Type of control unit programming:

Control unit programming using the "Campaign" function
in the Additional menu on the PIWIS Tester by entering a
programming code.

Programming code:

S8S4B

Programming sequence:

Read and follow the information and instructions on the
PIWIS Tester during the guided programming sequence.
The roof console is re-programmed during the
programming sequence.
Do not interrupt programming.

Programming time (approx):

6 minutes

Software version programmed during
this campaign:

0034
Following control unit programming, the software version
can be read out of the front-end electronics control unit under
'Interior lights on roof console' in the  'Extended identifications' menu using the PIWIS Tester.

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

 Workshop Manual '9X00IN Basic instructions and
procedure for control unit programming using the PIWIS
Tester - section on "Fault finding"'.

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

Repeat control unit programming by restarting
programming.

Concluding work
Woek Procedure:1

2

Carry out general subsequent 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 "Subsequent work"'.
Enter the campaign in the Warranty and Maintenance booklet.

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Warranty processing
Information
The following specified working time was determined specifically for carrying out this campaign and may
differ from the working times published in the PCSS.
Scope 1:

Re-program roof console
Working time:
Re-programming roof console
Includes:
Connecting and disconnecting battery charger
Connecting and disconnecting PIWIS Tester
Reading out and erasing fault memory

Labor time: 39 TU

 Damage Code WLC9 066 000 1

Important Notice: Technical Bulletins issued by Porsche Cars North America, Inc. are intended only for use by professional automotive technicians who have attended Porsche service training
courses. They are written to inform those technicians of conditions that may occur on some Porsche vehicles, or to provide information that could assist in the proper servicing of a vehicle. Porsche special
tools may be necessary in order to perform certain operations identified in these bulletins. Use of tools and procedures other than those Porsche recommends in these bulletins may be detrimental to the
safe operation of your vehicle, and may endanger the people working on it. Properly trained Porsche technicians have the equipment, tools, safety instructions, and know-how to do the job properly and
safely. Part numbers listed in these bulletins are for reference only. The work procedures updated electronically in the Porsche PIWIS diagnostic and testing device take precedence and, in the event of a
discrepancy, the work procedures in the PIWIS Tester are the ones that must be followed.

© 2020 Porsche Cars North America, Inc.

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