No. 49-20

Service
Technical Information
49/20
ENU
5773
5
Symptom - Body Exterior - Passenger's Side Mirror Lowering Does Not Swivel Back to
Original Position: Re-programming Door Control Units (SY 49/20)
Model line:
Cayenne (9YA)
Model Year:
As of 2018 up to 2020
Subject:
Door control unit
Symptom:
Following reversing, the passenger's side mirror lowering does not swivel back to the original position.
Cause:
This fault can occur due to a software error.
Remedial
Action:
In the event of a customer complaint, check the hardware and software version in the driver's side door
control unit. Depending on the result of the test, re-program control units or replace control units for all
driver's side doors and power-window switches.
Information
The total time required for control unit programming is approx. 12 minutes.
Date of
Introduction:
Adapted software is used from:
Date
Week 10/20
Adapted hardware is used from:
Date
Week 25/18
Required tools and spare parts
9900 - PIWIS Tester 3 with installed PIWIS Tester software version 39.400.010 (or higher)
Battery charger with a current rating of at least 90 A, e.g. VAS 5908 Battery charger 90A
Tools:
•
•
Spare Parts:
Part No.
Designation
Qty.
971959858E HUO
 Driver's side power-window switch
1 ea.
971959858F HUO
 Driver's side power-window switch (Hybrid) 1 ea.
PAB95979312
 Driver's side front door control unit
1 ea.
PAB95979212
 Passenger's side front door control unit
1 ea.
PAB95979512
 Rear door control unit
2 ea.
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Technical Information
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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 commencing work, connect a suitable battery charger with a charging current of at least 90 A to
the jump-start terminals in the engine compartment.
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
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Connect a battery charger with a current rating of at least 90 A (e.g. battery charger 90 A) to the
external power connection for jump-lead starting in the engine compartment.
For instructions, see  Workshop Manual '2706IN External power connection, jump-lead starting'.
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Technical Information
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1
Position the driver's key in the rear area of the left
cupholder in the center console between the holding
struts (emergency start tray) in order to guarantee a
permanent radio link between the vehicle and driver's
key  Emergency start tray.
2
9900 - PIWIS Tester 3 must be connected to the
vehicle communication module (VCI) via the USB
cable. Then connect the communication module
to the vehicle and switch on the PIWIS Tester.
3
Switch on the ignition.
4
On the PIWIS Tester, call up the 'driver 's-side door control unit and 'Extended identifications'
menu.
Emergency start tray
Check hardware and software version:
If the hardware version is index D or J and the software version is less than "0430", re-program door
control units.
If the hardware version is index C, replace driver's side door control units and power-window
switches, see
 Workshop Manual '645819 Removing and installing switch for power windows'
 Workshop Manual '577319 Removing and installing front door control unit'
 Workshop Manual '587319 Removing and installing rear door control unit'
Re-programming door control units
NOTICE
Use of a PIWIS Tester software version that is older than the prescribed version
•
Measure is ineffective

Always use the prescribed version or a higher version of the PIWIS Tester software for control unit
programming.
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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Technical Information
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Required PIWIS Tester software version:
39.400.010 (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:
F8H1M
Programming sequence:
Read and follow the information and instructions
on the PIWIS Tester during the guided programming
sequence.
The door control units are re-programmed and then
automatically re-coded during the programming
sequence.
Do not interrupt programming.
Programming time (approx):
12 minutes
Software version programmed during this
campaign:
0430
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.
Following control unit programming, the software
version can be read out of the driver's-side front door
control unit in the  'Extended identifications' menu
using the PIWIS Tester.
procedure for control unit programming using the
PIWIS Tester - section on "Fault finding"'.
Concluding work
Work Procedure:
Information
The end positions of the power windows are deleted from the control unit when the battery is disconnected and connected.
Perform the following procedure for all power windows:
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•
Pull rocker switch and fully close window once.
•
Pull rocker switch again.
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The upper end position of the window is stored.
•
Press rocker switch and fully open window once.
•
Press rocker switch again.
The lower end position of the window is stored.
1
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"'.
Invoicing
Invoicing:
For documentation and warranty invoicing, enter the labor operations, PQIS coding and part numbers
specified below in the warranty claim:
APOS
Labor operation
57730101
Checking front door control unit
57732501
Programming front door control unit
APOS
Labor operation
64581901
Removing and installing front left power-window
switch
64581902
Removing and installing front right power-window
switch
57731901
Removing and installing front left door control unit
57731902
Removing and installing front right door control
unit
58731901
Removing and installing rear left door control unit
58731902
Removing and installing rear right door control
unit
I No.
I No.
PQIS coding:
Location (FES5)
57730
Front door control unit
Damage type (SA4)
1614
Function not as specified
Parts Info:
Part No.
Designation
Qty.
971959858E HUO
 Driver's side power-window switch
1 ea.
971959858F HUO
 Driver's side power-window switch (Hybrid) 1 ea.
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References:
ENU
Technical Information
49/20
PAB95979312
 Driver's side front door control unit
1 ea.
PAB95979212
 Passenger's side front door control unit
1 ea.
PAB95979512
 Rear door control unit
2 ea.
 Workshop Manual '2706IN External power connection, jump-lead starting'
 Workshop Manual '645819 Removing and installing switch for power windows'
 Workshop Manual '577319 Removing and installing front door control unit'
 Workshop Manual '587319 Removing and installing rear door control unit'
 Workshop Manual '9X00IN Basic instructions and procedure for control unit programming using the
PIWIS Tester'
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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