Connect plug connection to the
trailer hitch control unit ( Figure
21 -2-)
4

Concluding work
4.1

Figure 21

Convert rear panel
4.1.1

Remove rear panel.  Workshop Manual '635619 Removing and installing rear
panel'

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4.1.2

Mark the cut-out for the trailer hitch
along the impression ( Figure 22
-1-) on the inside of the rear panel
so that it is clearly visible using a
pen.
1
2

– Marking
– Cut-out

Information
Mask the sawing area to prevent
damage.
4.1.3

Carefully make the cut-out using
a drill and saw along the marking
( Figure 22).

4.1.4

De-burr cut edges ( Figure 22 -2-)
with a knife or file.

4.1.5

Clean the inside of the rear panel to remove any dust and grease (isopropanol
cleaner).

4.1.6

Pull protective film ( Figure 23
-1-) off the reinforcement ( Figure
23 -2-).

Figure 22

Figure 23

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Insert reinforcement perfectly into
the rear panel. Fastening bores
( Figure 24 -1-) and bores for
expansion rivets ( Figure 24 -2-)
must be covered exactly.
1
2
a

4.1.8

Macan (95B)

– Fastening bore
– Expansion rivet bore
– Bonding area

Press reinforcement firmly onto the
rear panel ( Figure 24 -a-).
Figure 24

Coding:

5

4.1.9

Secure the reinforcement with
expansion rivets (2 ea.) ( Figure
25 -1, 2-).

4.1.10

Install rear panel.  Workshop
Manual '635619 Removing and
installing rear panel'

4.2

Install side trim panel for right luggage
compartment.  Workshop Manual '700319
Removing and installing side trim panel for
rear luggage compartment'

4.3

Install cover for rear lock support. 
Workshop Manual '703919 Removing and
installing cover for rear lock carrier'

4.4

Install (side) luggage compartment trim panel (luggage compartment cover).  Workshop
Manual '700619 Removing and installing side luggage compartment trim (luggage
compartment cover)'

4.5

Install (center) luggage compartment trim panel (luggage compartment cover).  Workshop
Manual '700619 Removing and installing centre luggage compartment trim (luggage
compartment cover)'

4.6

Install rear apron.  Workshop Manual '635519 Removing and installing rear apron'

4.7

Connect the battery.  Workshop Manual '2X00IN Work instructions after disconnecting the
battery'

Figure 25

Enter trailer hitch (1D6) in the vehicle data
5.1

Preparatory work – Coding
5.1.1

Connecting a battery charger.  Workshop Manual '270689 Charging vehicle
electrical system battery'

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Installation and Conversion Instructions

NOTICE
Voltage drop
•

Risk of irreparable damage to control unit

•

Risk of damage to control unit

•

Fault entries in the control unit

•

Coding in the control unit is aborted

•

Malfunctions in control unit, even during programming



Switch off the ignition and remove the ignition key before disconnecting the control
unit.



Ensure that the power supply is not interrupted during programming.



Connect a battery charger with a current rating of at least Nominal value 90 A to the
vehicle battery.
NOTICE

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

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



During control unit programming, always connect PIWIS Tester III to the vehicle
communication module (VCI) via the USB cable.
5.1.2

9900 - PIWIS Tester 3 must be connected to the vehicle and switched on.

5.1.3

Switch on ignition AND hazard warning lights on the vehicle.
Information
The 9900 - PIWIS Tester III instructions take precedence since the description
may be different with later Tester releases.
The procedure described here has been structured in general terms; different text
or additions may appear on the 9900 - PIWIS Tester III.

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5.1.4

Select the “Diagnostics” PIWIS Tester menu item.

5.1.5

If 9900 - PIWIS Tester 3 is connected correctly, a connection to the vehicle will be
established: The model line is detected: "Macan" model line is detected.

5.1.6

Create a vehicle analysis log (VAL) in the "Overview" menu item.

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6

Information
The function is ONLY available when the Tester is online!
5.2

Enter the new vehicle equipment in the vehicle data using “PIWIS Online”
5.2.1

Select the function "Maintenance of vehicle data with PIWIS ONLINE" in the "Model
line-specific tests and campaigns" menu item.
A message appears informing you that the “Actual” (vehicle) data and “Required”
(PIWIS Online) data will be compared.
Press •F12“ to continue.

5.2.2

Confirm the message “The vehicle data was compared with PIWIS Online.
Significant differences were found” with •F12“.

5.2.3

Look for the option "TRAILER HITCH" in the "Family" column.
Select the value "1D6 - TRAILER HITCH WITHOUT BALL JOINT (USA)" in the
drop-down menu. Press •F12“ to continue

5.2.4

A table containing the coding value and the columns “new value” and “old value” is
displayed in the overview. Press •F8“ to continue.

5.2.5

Data is then written/stored. The following messages appear one after the other:
•
•
•
•

5.2.6
5.3

Transferring vehicle data to PIWIS Online.
Writing and transferring vehicle data to the vehicle.
Vehicle order was written successfully.
A check was performed in order to check whether control units have to be
coded as a result of the changes that were made.

Press •F10“ to open the log. Check that the selected vehicle equipment has been
entered and close the log.

Code/program the new vehicle equipment(s)
5.3.1

Confirm the table containing a list of control units that must be coded/programmed
by pressing •F12“.

5.3.2

Individual data records will be loaded, depending on the number of control units to
be coded/programmed.
Wait until messages “Creating backup documentation. Please wait...” and “Coding
was completed successfully”. Press •F12“ to continue.
Repeat the process for other control units if necessary.

5.3.3

Wait for the “Adaptation of the control units is complete.” message and check the
coding status of the control units in the table displayed.
Continue by pressing •F12“ to return to the control unit overview.

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5.4

Read out the fault memory of all systems, work through any existing faults, and erase the
fault memory (  Workshop Manual '0335IN Maintenance diagnosis: Diagnostic system and
maintenance inter...').

5.5

Create a vehicle analysis log (VAL) in the "Overview" menu item.

5.6

Switch off ignition and disconnect 9900 - PIWIS Tester 3.

5.7

Disconnect the battery charger.  Workshop Manual '270689 Charging vehicle electrical
system battery'

–Retrofitted (mechanical) trailer hitch–
Includes:
Removing and installing rear apron, real panel working out
cut-out in rear panel, installing rear panel reinforcement,
installing and coding trailer hitch.

Labor time: 235 TU

ONLY for vehicles with Lane Change Assist/Lane Keep Assist (6I1/6I3/7Y1):
91 70 25 53: Program Lane Change Assist control unit;
Includes:
Measure calibration plate on the vehicle.

Labor time: 47 TU

ONLY vehicles with reversing camera (KA2) and reversing camera including Surround View (KA6):
91 72 25 50: Program Surround View camera control unit

Labor time: 62 TU

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.

© 2022 Porsche Cars North America, Inc.

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