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Technical Information

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WKK5 Workshop campaign - Re-programming air conditioning and high-voltage battery
control units
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 2014 up to 2016

Vehicle type:

Panamera S E-Hybrid (970)

Subject:

Air conditioning and high-voltage battery control units

Information:

New software has been developed to optimize the cooling of the high-voltage battery during
the charging process. The new software helps to maintain the performance of the high-voltage
battery and prevents overheating of the battery during charging at high outside temperatures.
For this reason, the air conditioning and high-voltage battery control units on the affected vehicles are
programmed with a new data record.

Remedial
Action:

Re-program the air-conditioning and high-voltage battery control units using the PIWIS Tester.

Information
During the campaign, the air conditioning and high-voltage battery control units are re-programmed and
then re-coded automatically.
The total time required for programming and coding is approx. 8 minutes.

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Information
This campaign is not relevant for vehicles that were installed with a high-voltage battery from the
Cayenne S E-Hybrid (92A) as part of the Technical Information  Technical Information '270800 Spare
parts requirements for high-voltage battery: Follow special instructions (88/19)'. Different software was
already installed on these Panamera S E-Hybrid (970) vehicles when TI 88/19 was implemented.
For this reason, the repair history of the vehicle must be checked before the workshop visit to
determine whether TI 88/19 may have been carried out on this vehicle.
Alternatively, the vehicles can be identified using the M number 'ST1 - Installing E2 HV battery (28 Ah
cells)' stored in the vehicle data, which was entered during the implementation of TI 88/19. It is important
to note here that the M number may not yet have been transferred into the Porsche AG After Sales
systems. As a result, this can only be read out of the vehicle data in the vehicle reliably using the PIWIS
Tester.
Campaign WKK5 must be closed by performing a recall update (warranty claim with 0 time units and no
parts claimed) for the affected vehicles.
Affected
Vehicles:

Only vehicles assigned to the campaign (see also PCSS Vehicle Information). There are 1,732 vehicles
affected by this campaign in North America.

Required tools
Tools:

•
•

9900 - PIWIS Tester 3 with PIWIS Tester software version 39.200.020 (or higher) installed
Battery charger with a current rating of at least 90 A, e.g. VAS 5908/ Battery charger 90A

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.

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

If the driver's 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 driver’s key. To do this, replace the dummy key in the ignition lock
with the original driver’s key if necessary.

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 air conditioning and high-voltage battery control units
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:

Required PIWIS Tester software
version:

39.200.020 (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:

Q1K6M

Programming sequence:

Read and follow the information and instructions on the PIWIS
Tester during the guided programming sequence.
During the programming sequence, the high-voltage battery and air
conditioning control unit is re-programmed and then re-coded
automatically.
Do not interrupt programming and coding.

Programming time (approx):

8 minutes

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Software version programmed
during this campaign:

Air conditioning

1040

High-voltage battery

1103

Following control unit programming, the software version can be
read out of the air-conditioning or high-voltage battery control unit in
the  'Extended identification' 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

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

Repeat control unit programming by restarting programming.

control unit programming using the PIWIS Tester - section on "Fault
finding"'.

Concluding work
Work 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.

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-programming air conditioning and high-voltage battery control units
Working time:
Re-programming control units for air conditioning and high-voltage battery
Includes:
Connecting and disconnecting battery charger
Connecting and disconnecting PIWIS Tester

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AfterSales

Labor time: 60 TU

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Reading out and erasing fault memories
 Damage Code WKK5 66 000 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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