No. 29-18

Installation and Conversion Instructions
Cayenne (9YA)
29/18
ENU
6690
6
Trailer hitch (I-no. 1D6)
Revision:
This bulletin replaces Group 6, #29/18, dated January 10, 2020.
Model Year:
As of 2018
Information:
Retrofitting
Note:
The new Cayenne can be retrofitted with a trailer hitch. Note the following special features:
•
•
•
•
•
•
•
Permissible hook load of 140 kg
Totally versatile wading depth
Convenient loading and safe parking is assured by removing the ball hitch/bar (mechanical trailer
hitch – 1D6)
Plug socket preparation for USA version
Payload following installation, restricted by higher vehicle kerb weight!
Gross vehicle weight and axle load must not be exceeded!
Vehicles with SportDesign package Carbon (2D3 or PD1/PD2/PD3) require a NEW rear panel, which
must be ordered separately.
The trailer hitches for the respective market are also available straight from the factory for new vehicles
by requesting optional equipment "1D6" = mechanical trailer hitch .
Parts Info:
ONLY for vehicles up to production date 16.08.2020:
9Y0.044.840.01
 Trailer hitch, mechanical – USA (1D6)
ONLY for vehicles as of production date 17.08.2020:
9Y0.044.840.04
 Trailer hitch, mechanical – USA (1D6)
ONLY for vehicles with Comfort Access (4F2/4F6 – Powerlift tailgate with virtual pedal): Also order the
following:
WHT.005.450
8x
 Tie-wrap
ONLY for vehicles with SportDesign package Carbon (2D3 or PD1 / PD2 / PD3): Also order the following,
depending on country/market:
9Y0.807.834.H.03G
1x
 Rear panel - open, shiny carbon, black – USA
Tequipment
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6
Cayenne (9YA)
6690
ENU
Installation and Conversion Instructions
29/18
Parts list:
Figure 1
Parts included with trailer hitch – mechanical – USA/Canada (1D6 Figure 3 ):
PAF.910.398.02
Jan 8, 2021
Page 2 of 13
Hexagon-head bolt, M12 x 1.5 x 90  Figure 3 -1-
9Y0.803.881.A
1x
Trailer hitch incl. wire harness – USA/Canada (1D6)  Figure 3 -2-
955.722.030.001
1x
Stopper for trailer hitch  Figure 3 -4-
9Y0.907.297
1x
Trailer hitch control unit bracket  Figure 3 -5-
9A7.907.383.01
1x
Trailer hitch control unit  Figure 3 -6-
PAB.907.383.A
1x
Trailer hitch control unit (not shown)
———
1x
Wiring harness for power supply (terminal 30)  Figure 3 -7-
955.044.000.28
1x
Ball hitch –removable– USA/Canada  Figure 3 -8-
———
1x
"Electric Brake" sticker – identification  Figure 3 -9-
———
10 x
Tie-wrap, 150 mm (not shown)
1
Notes:
8x
Already installed on the trailer hitch!
Further information/Technical values, instructions for using the trailer hitch and "Driving with a trailer": 
Cayenne Driver's Manual – "Trailer Hitch", "More Safety and More Driving Pleasure"
Tequipment
Installation and Conversion Instructions
Tools:
Cayenne (9YA)
29/18
ENU
Nr.88 - Torque angle torque wrench
VAS 6933 Disassembly tool
9900 - PIWIS Tester 3
Saw or vibrating knife
Steel drill bit, Ø up to 8.0 mm
Drill
Tap, M12 x 1.5
Round/flat file
Side cutters
Flat scraper
Plastic wedge
Electric torch
6690
6
Knife
Installing:
1
Preparatory work
1.1
Connect battery charger (  Workshop Manual '2X00IN Trickle charging 12-volt lithium-ion
battery').
1.2
Raise the vehicle (  Workshop Manual '4X00IN Lifting the vehicle')
1.3
Remove rear bumper (  Workshop Manual '635019 Removing and installing rear bumper')
1.4
Expose connector B (6-pin)/connector C
(10-pin) on trailer hitch preparation near
the fuse box in the luggage compartment
( Figure 4 ).
1
2
3
– Connector B (6-pin)/connector C
(10-pin)
– Ground pin MB25
– Fuse box in luggage compartment,
left
Carefully remove foam.
1.5
Figure 2
ONLY for –mechanical– trailer hitch (1D6):
Expose connection point (connector, 2-pin) for brake booster preparation in the luggage
compartment area at the left.
1.6
Check that the bolt threads and contact surfaces for securing the trailer hitch are not dirty.
Clean them and re-cut the threads using an M12 x 1.5 tap if necessary.
NOTICE
Incorrect line routing
•
Risk of damage to lines and hoses
•
Malfunction and fault memory entry on control unit

Avoid small bending radii when routing lines.

File down edges and burrs in the routing area or mask them with adhesive tape.

Maintain a sufficient distance from components exposed to high temperatures while driving.
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Cayenne (9YA)
6690
ENU
29/18
1.7
ONLY for vehicles with Comfort Access
(4F2/4F6) – Powerlift tailgate with virtual
pedal:
Convert "Virtual pedal" antenna line in the rear
apron
1
2
3
4
5
1.7.1
1.8
Installation and Conversion Instructions
– "Virtual pedal" antenna line
– Control unit for "Virtual pedal"
antenna line
– Positions of tie-wraps on adhesive
pads
– Tie-wrap with adhesive pad
– New line routing for "Virtual pedal"
antenna line
Carefully remove "Virtual pedal"
antenna line with holder and
tie-wraps (7 x) from the inside of the
rear apron ( Figure 5 -1-).
Figure 3
1.7.2
Carefully cut open tie-wraps on adhesive pads and remove tie-wraps (7 x) from
antenna line.
1.7.3
Clean bonding area in the new antenna line routing area to remove any dust and
grease ( Figure 5 -3-).
1.7.4
Stick on new adhesive pads (7 x) with tie-wraps at the markings.
1.7.5
Secure "Virtual pedal" antenna line in new tie-wraps (7 x) and cut off excess length
of tie-wraps.
ONLY for vehicles WITH SportDesign package Carbon (2D3 or PD1 / PD2 / PD3):
Replace rear panel – closed (carbon gloss, black) with new rear panel – open (carbon gloss,
black) (  Workshop Manual '63561940 Removing and installing rear panel (moulding)')
Information
Mask the sawing area to prevent damage.
1.9
ONLY for vehicles WITHOUT SportDesign package Carbon (2D3 or PD1/PD2/PD3):
Make a cut-out for the (removable/pivoting) ball hitch in the rear apron.
1.9.1
Jan 8, 2021
Page 4 of 13
Remove rear panel (moulding) in black matt (2JB) or stainless steel (2JX) on
the bottom of the rear apron (  Workshop Manual '63561940 Removing and
installing rear panel (moulding)').
Tequipment
Installation and Conversion Instructions
1.9.2
29/18
ENU
6690
6
Mark the cut-out for the ball
hitch (removable – USA) at the
impression on the inside of the rear
apron ( Figure 6 -top-).
1
2
3
2
Cayenne (9YA)
– Red = Marking for cut-out
for removable ball hitch
– Yellow = not applicable
– Not applicable
1.9.3
Carefully make the cut-out at the
marking ( Figure 6 -bottom-).
1.9.4
De-burr cut edges with a knife or
file.
1.9.5
Install rear panel (moulding) in black matt (2JB) or stainless steel (2JX) on the
bottom of the rear apron (  Workshop Manual '63561940 Removing and
installing rear panel (moulding)').
Figure 4
Install trailer hitch
2.1
Secure trailer hitch to the vehicle
2.1.1
Install the trailer hitch using 8 new
bolts (M12 x 1.5 x 90) at the left and
right and tighten hand-tight.
1
2
2.2
– Trailer hitch (Non-US
version shown)
– Screw, M12 x 1.5 x 90
2.1.2
Align bolt guides for the trailer hitch
(8 x) symmetrically with respect to
the 8 bolt heads (M12 x 1.5 x 90)
( Figure 7 -inset-).
2.1.3
Tighten trailer hitch fully.
tightening torque 110 Nm
Figure 5
Route electric wire harness for trailer hitch in the passenger compartment (see also 
Workshop Manual '972419 Removing and installing wire harness for trailer hitch')
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6
Cayenne (9YA)
6690
ENU
Installation and Conversion Instructions
29/18
2.2.1
Remove dummy plug (Ø 40 mm)
from side panel on the vehicle at
the left and guide wire harness
for trailer hitch into the luggage
compartment.
1
2
3
2.3
– Wire harness for trailer
hitch
– Rubber sleeve (wire
harness)
– Tie-wrap
2.2.2
Insert rubber sleeve (wire harness)
into the bore (Ø 40 mm) on the
body.
2.2.3
Install tie-wraps for wire harness (2
x) on threaded bolts on the outside
of the vehicle ( Figure 8).
Figure 6
Check pin assignment in connector B on the
vehicle side (6-pin; trailer hitch preparation
 Figure 9).
1
2
3
4
– Connector B (6-pin; trailer hitch
preparation)
– Connector B, chamber 1
– Connector B, chamber 6
– Fuse holder H (strip B – white)
Are chambers 1 (swivel motor) and 6 (charge
line) - both on terminal 30 - used?
•
•
Jan 8, 2021
Page 6 of 13
Yes: Continue with Step 2.4
No: Carry out the following work.
Tequipment
Figure 7
Installation and Conversion Instructions
2.3.1
29/18
ENU
6690
6
Remove fuse holder H (strip B
– white) from the fuse box in
the luggage compartment ( 
Workshop Manual '978409
Loosening and securing fuse box in
the luggage compartment' Figure
10 -top-).
1
2
3
4
2.3.2
Cayenne (9YA)
– Fuse holder H (strip B –
white)
– Cover on underside
– Latch on fuse holder
– RD/GN line 2.52
Release fuse holder H (strip B –
white) and connect the lines (RD/GN
and RD/YE) as follows ( Figure 10
-bottom-):
•
•
Figure 8
Chamber 6: RD/GN line 2.52
 Preparation for connector B, chamber 1 (swivel motor)
Chamber 7: RD/YE line 2.52  Preparation for connector B, chamber 6
(charge line)
2.3.3
Lock connector housing strip B (color: white) and Install it into the fuse holder.
2.3.4
Install fuse holder H (strip B – white) in the fuse box in the luggage compartment
(  Workshop Manual '978409 Loosening and securing fuse box in the luggage
compartment').
2.3.5
Route RD/GN and RD/YE lines
to connector B (preparation).
( Figure 11 ).
1
2
3
– RD/GN and RD/YE lines
– Connector B (preparation)
– Fuse box in luggage
compartment
Release connector B, connect lines
RD/GN and RD/YE as described in
Step 2.3.2 ( Figure 11 -inset-).
Lock connector B.
Tequipment
Figure 9
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6
Cayenne (9YA)
6690
ENU
Installation and Conversion Instructions
29/18
2.4
Install trailer hitch control unit in the luggage
compartment area (left side panel)
1
2
3
4
– Trailer hitch control unit bracket
– Connector A – wire harness for
trailer hitch
– Ground line 2.52 – BN
– Ground pin MB25
2.4.1
Disconnect any lines and hoses in
the installation area.
2.4.2
Insert pins (2 x on underside of
control unit bracket) into the body
( Figure 12 -A -)
2.4.3
Clip trailer hitch control unit bracket at the top into the web plate on the body (
Figure 12 -B -).
2.4.4
Guide connector A (wire harness for trailer hitch) and connector B/C (trailer hitch
preparation) into the control unit bracket.
2.4.5
Install trailer hitch control unit into
the bracket ( Figure 13 ).
1
2
Figure 10
– Trailer hitch control unit
– Bracket
Figure 11
Jan 8, 2021
Page 8 of 13
Tequipment
Installation and Conversion Instructions
2.5
Cayenne (9YA)
29/18
ENU
6690
6
Install cable ring eyelet A6 at the ground pin
MB25 ( Figure 14 -2-).
1
2
3
4
5
6
– Ground line BN 2.52
– Ground pin MB25
– Connector A (wire harness for trailer
hitch)
– Connector B (preparation)
– Connector C (preparation)
– Trailer hitch control unit
Tightening torque 9 Nm (6.5 ftlb.)
2.6
Connect plug connections for connector
A/B/C to the trailer hitch control unit ( Figure 14).
2.7
ONLY for –mechanical– trailer hitch (1D6):
2.7.1
Figure 12
Connect plug connection (2-pin
 Figure 15) for brake booster
preparation in the luggage
compartment area at the left.
1
2
3
– Connector (2-pin) – brake
booster preparation
– Connector A
– Ground line BN 2.52
Install connection point at a suitable
location using a clip.
Figure 13
2.7.2
Affix sticker showing the warning
"Electric Brake for Trailer not
connected" on a clean surface at
a clearly visible position next to
the "Ball Position" sticker or the
dashboard ( Figure 16 ).
1
2
– "Electric Brake for Trailer
not connected" warning
sticker
– "Ball Position" sticker
Figure 14
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6
Cayenne (9YA)
6690
ENU
Installation and Conversion Instructions
29/18
2.8
Check fuse assignment in fuse holder H (strip
B – white  Figure 17) and insert missing
fuses if necessary:
•
•
•
•
Fuse slot 5 = trailer hitch (right light) =
25 A
Fuse slot 6 = trailer hitch (swivel motor)
= 30 A
Fuse slot 7 = trailer hitch (attaching
trailer & electric release) = 15 A
Fuse slot 9 = trailer hitch (plug socket) =
15 A
Figure 15
NOTICE
Incorrect line routing
•
Risk of damage to lines and hoses
•
Malfunction and fault memory entry on control unit

Avoid small bending radii when routing lines.

File down edges and burrs in the routing area or mask them with adhesive tape.

Maintain a sufficient distance from components exposed to high temperatures while driving.
3
Concluding work
3.1
Install side trim panel for luggage compartment  Workshop Manual '700319 Removing
and installing side trim panel for rear luggage compartment'.
3.2
Install rear apron (  Workshop Manual '635519 Removing and installing rear apron')
3.3
Lower the vehicle (  Workshop Manual '4X00IN Lifting the vehicle')
Coding:
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.
Jan 8, 2021
Page 10 of 13
Tequipment
Installation and Conversion Instructions

Cayenne (9YA)
29/18
ENU
6690
6
Connect a battery charger with a current rating of at least Nominal value 90 A to the vehicle battery.
4
Coding/programming trailer hitch (1D6)
4.1
Preparatory work – Coding
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.
4.1.1
9900 - PIWIS Tester 3 must be connected to the vehicle and switched on.
4.1.2
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.
4.1.3
Select the "Diagnostics" menu item on the PIWIS Tester.
4.1.4
If 9900 - PIWIS Tester 3 is connected correctly, a connection to the vehicle will be
established: "Cayenne" model line is detected.
4.1.5
Press •F12“ to go to the control unit search screen.
4.1.6
Confirm the question: "Create vehicle analysis log (VAL)?" with "Yes" = •F12“.
Information
The function is ONLY available when the Tester is online!
4.2
Enter the new vehicle equipment in the vehicle data using "PIWIS Online"
4.2.1
Press •F7“ in the control unit overview to switch to the “Additional menu”.
4.2.2
Select the function "Maintenance of vehicle data with PIWIS ONLINE".
A message appears informing you that the "Actual" (vehicle) data and "Required"
(PIWIS Online) data will be compared.
Press •F12“ to continue.
Tequipment
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6
Cayenne (9YA)
6690
ENU
Installation and Conversion Instructions
29/18
4.2.3
Confirm the message "The vehicle data was compared with PIWIS Online.
Significant differences were found" with •F12“.
4.2.4
Look for the option "TRAILER HITCH" in the "Family" column.
Select the available option from the drop-down menu in the "Value" column,
depending on the option installed:
•
1D6 – TRAILER HITCH WITHOUT TOW BALL (USA)
Press •F12“ to continue.
4.2.5
A table containing the coding value and the columns "new value" and "old value" is
displayed in the overview. Press •F8“ to continue.
4.2.6
Data is then written/stored. The following messages appear one after the other:
•
•
•
•
4.3
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 or programmed as a result of the changes that were made.
Code/program the new vehicle equipment.
4.3.1
Confirm the table containing a list of control units that must be coded/programmed
by pressing •F12“.
4.3.2
Individual data records will be loaded, depending on the number of control units to
be coded/programmed.
Wait until the message "Creating backup documentation. Please wait..." and
"Coding was completed successfully" appears. Press •F12“ to continue.
Repeat the process for other control units if necessary.
4.3.3
Wait until the message "Adaptation of the control units is complete." appears and
check the coding status of the control units in the table that is displayed.
Continue by pressing •F12“ to return to the control unit overview.
Jan 8, 2021
Page 12 of 13
4.4
ONLY for vehicles with Lane Change Assist (7Y1/7Y2/7Y3 or 7Y8):
Calibrate control unit for Lane Change Assist (  Workshop Manual '917025 Calibrating
Lane Change Assist')
4.5
Read out the fault memories of all systems, work through any existing faults and erase the
fault memories.  Workshop Manual '0335IN Diagnostic maintenance: diagnostic system
and maintenance inter…'
4.6
Create another vehicle analysis log (VAL) in the "Control unit overview" menu item.
4.7
Switch off ignition and disconnect 9900 - PIWIS Tester 3.
4.8
Drive the vehicle off the lifting platform.
Tequipment
Installation and Conversion Instructions
Cayenne (9YA)
29/18
66 90 23 00:
–Retrofitting –mechanical– trailer hitch–
Includes:
Removing and installing rear apron and left side trim panel for
rear luggage compartment;
Removing rear bumper and installing trailer hitch;
Making cut-out for removable ball hitch in rear apron;
Coding/programming new vehicle equipment.
91 70 25 53:
Programming Lane Change Assist control unit
Includes:
Calibrating calibration plate on the vehicle.
ENU
6690
6
Labor time: 238 TU
Labor time: 47 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.
© 2021 Porsche Cars North America, Inc.
Tequipment
Jan 8, 2021
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