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Technical Information
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WF61 - Re-programming Control Unit For Air-conditioning System (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. Please refer to Equipment Information EQ1401 for a list of suitable
battery chargers/power supplies which should be used to maintain vehicle voltage.
Model Year:
As of 2015 up to 2016
Model Line:
Macan
Concerns:
Control unit for air-conditioning system
Information:
This is to inform you of a voluntary Workshop Campaign on the above-mentioned vehicles. The
evaporator for the air-conditioning system on the affected vehicles can freeze at high outside
temperatures with high humidity.
As a result, the air-conditioning system will no longer cool the vehicle.
Action
Required:
Re-program control unit for the air-conditioning system using a modified parameter set.
Information
The total time required for programming and coding the control unit is approx. 4 minutes.
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 17,914 vehicles in North America.
Tools:
•
•
Claim
Submission:
Battery Charger/Power Supply - Suitable for AGM Type batteries, recommended current rating of
70A fixed voltage 13.5V to 14.5V. Refer to Equipment Information EQ-1105.
9818 - PIWIS Tester II with PIWIS Tester software version 15.800.020 (or higher) installed.
See Attachment “A”.
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Preliminary 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 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.
Information
In the event that a vehicle has previously had a concern of a freezing evaporator, please perform normal
air-conditioning diagnosis as other root causes could be involved.
Work Procedure: 1
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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"'.
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Technical Information
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ENU
WF61
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Re-programming control unit for air-conditioning system
Information
The procedure described here is based on the PIWIS Tester II software version 15.800.020.
The PIWIS Tester instructions take precedence and in the event of a discrepancy, these are the
instructions that must be followed.
A discrepancy may arise with later software versions for example.
Work Procedure: 1
Re-program control unit for air-conditioning system.
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:
15.800.020 (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:
R4K5P
Programming sequence:
Read and follow the information and instructions
on the PIWIS Tester during the guided
programming sequence.
During the programming sequence, the control
unit for the air-conditioning system is
re-programmed and then re-codedautomatically.
Do not interrupt programming and coding.
Programming time (approx.):
4 minutes
Software version programmed during this
campaign:
1040
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 restarting
programming.
2015© Porsche Cars North America, Inc.
Following control unit programming, the software
version can be read out of the air-conditioning
system control unit in the  'Extended identification'
menu using the PIWIS Tester.
procedure for control unit programming using the
PIWIS Tester - section on "Fault finding"'.
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Subsequent work
Work Procedure: 1
2
Carry out general subsequent work for control unit programming as described in the Workshop
Manual  Workshop Manual '9X00IN Basic instructions and procedure for control unit programming
using the PIWIS Tester - section on "Subsequent work"'.
Enter the workshop campaign in the Warranty and Maintenance booklet.
Information
The specified working time was determined specifically for carrying out this campaign and may differ
from the working times published in the Labor Operation List in PIWIS.
Attachment "A": Claim Submission - Workshop Campaign WF61
Warranty claims should be submitted via WWS/PQIS.
Open campaigns may be checked by using either the PIWIS Vehicle Information system or through PQIS
Job Creation.
Labor, parts, and sublet will be automatically inserted when Technician is selected in WWS/PQIS. If
necessary, the required part numbers will need to be manually entered into warranty system by the dealer
administrator.
Working time:
Labor time: 24 TU
Re-programming control unit for air-conditioning system
Includes:
Connecting and disconnecting battery charger
Connecting and disconnecting PIWIS Tester
Reading out and erasing fault memories
 Damage code WF61 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. If a particular condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your authorized Porsche Dealer for the latest information
about whether a particular technical bulletin applies to your vehicle. Part numbers listed in these bulletins are for reference only. Always check with your authorized Porsche dealer to verify the current and
correct part numbers. 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.
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Dealership
Distribution
Routing
Service Manager
_______
Shop Foreman
_______
Service Technician
________
_______
_______
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Asst. Manager
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Warranty Admin.
_______
Service Technician
________
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Dr. Ing. h.c. F. Porsche AG is the owner of numerous trademarks, both registered and unregistered, including without limitation the Porsche Crest®, Porsche®, Boxster®, Carrera®, Cayenne®,
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