NHTSA ID Number: 10170987
Manufacturer Communication Number: 122-W3N9A-02
TSB/Document Date: 2020-02-04
Summary
Instructions for installing a trailer hitch on a 2018 or newer Cayenne.
Cayenne (9YA)
– 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
Fit tie-wraps for wire harness (2 x)
on threaded bolts on the outside of
the vehicle ( Figure 8).
Figure 8
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?
•
•
Yes: Continue with Step 2.4
No: Carry out the following work.
Tequipment
Figure 9
Jan 10, 2020
Page 7 of 18
6
Cayenne (9YA)
6690
ENU
Installation and Conversion Instructions
29/18
2.3.1
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
Release fuse holder H (strip B –
white) and connect the lines (RD/GN
and RD/YE) as follows ( Figure 10
-bottom-):
•
•
2.3.3
2.3.4
– Fuse holder H (strip B –
white)
– Cover on underside
– Latch on fuse holder
– RD/GN line 2.52
Figure 10
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)
Lock connector housing strip B (color: white) and fit it into the fuse holder.
Fit 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.
Jan 10, 2020
Page 8 of 18
Tequipment
Figure 11
Installation and Conversion Instructions
2.4
Cayenne (9YA)
29/18
ENU
6690
6
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
Fit trailer hitch control unit into the
bracket ( Figure 13 ).
1
2
Figure 12
– Trailer hitch control unit
– Bracket
Figure 13
Tequipment
Jan 10, 2020
Page 9 of 18
6
Cayenne (9YA)
6690
ENU
Installation and Conversion Instructions
29/18
2.5
Fit 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 14
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
Fit connection point at a suitable
location using a clip.
Figure 15
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 16
Jan 10, 2020
Page 10 of 18
Tequipment
Installation and Conversion Instructions
2.8
Cayenne (9YA)
29/18
ENU
6690
6
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 17
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
ONLY for –electric– trailer hitch (1D3/1D9):
Route and connect electric wire harness ( Figure
18) for trailer hitch switch.
1
2
3
3.1
3.2
– Connector D (10-pin) – trailer hitch control
unit
– Connector (2-pin) – bridge for "light" on
trailer hitch switch
– Connector (12-pin) – trailer hitch switch
Remove side trim panel for luggage
compartment (at the right) Workshop
Manual '700319 Removing and installing side
trim panel for rear luggage compartment'.
Figure 18
ONLY for vehicles with standard springs/chassis (1BA/1BH):
Create bridge for "light" on switch for –electric– trailer hitch (1D3)
3.2.1
Remove luggage rail, support at the left and rear-end electronics control unit with
holder from the luggage compartment ( Workshop Manual '578919 Removing
and installing rear-end electronics').
Tequipment
Jan 10, 2020
Page 11 of 18
6
Cayenne (9YA)
6690
ENU
Installation and Conversion Instructions
29/18
3.2.2
Release connector housing (2-pin
Figure 19 -1-, secured to wire
harness for trailer hitch switch in a
bag).
1
2
3
4
5
3.2.3
– Plug connection (2-pin) –
wire harness for switch
– Connector A (17-pin,
green)
– CY/BU line 0.352
– YE/BK line – wire harness
for switch
– Rear-end electronics
control unit
Remove connector A (17-pin, green
Figure 19 -2-) from rear-end
electronics control unit and release
it.
3.2.4
Figure 19
Unpin CY/BU line 0.352 from chamber 5 (connector A, 17-pin, green) ( Figure 19
-A-).
Then insert it into chamber 1 (connector housing, 2-pin, wire harness for switch)
( Figure 19 -B-).
3.2.5
Check that the same chambers in the connector housing/plug socket (2-pin) are
used.
Lock connector housing (2-pin) and connect plug connection.
3.2.6
Insert YE/BK line (wire harness for switch) into chamber 5 (connector A, 17-pin,
green) ( Figure 19 -C-).
Lock connector housing and fit it into the rear-end electronics control unit.
3.2.7
Route wire harness for switch with connector D (10-pin) to the trailer hitch control
unit.
Secure wire harness in the passenger compartment to existing lines/components
with tie-wraps without tensile stress and so that no chafing occurs.
3.2.8
Install rear-end electronics control unit in the luggage compartment ( Workshop
Manual '578919 Removing and installing rear-end electronics').
Tightening torque 3 Nm (2 ftlb.)
Jan 10, 2020
Page 12 of 18
3.3
ONLY for vehicles with Surround Sound System (9VJ/9VL):
Remove subwoofer ( Workshop Manual '913619 Removing and installing subwoofer
(Burmester)' or Workshop Manual '913619 Removing and installing subwoofer (Bose)').
3.4
Route electric wire harness for switch for –electric– trailer hitch (1D3).
Tequipment
Installation and Conversion Instructions
3.4.1
Cayenne (9YA)
29/18
ENU
6690
6
Insert connector D (10-pin) in slot
D on the trailer hitch control unit
( Figure 20).
1
2
3
4
–
–
–
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TSB/Document ID: 122-W3N9A-02
Replacement Service Bulletin Number:
MFR Communication Date: 2020-01-10
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: EQUIPMENT
MFR Component System:
MFR Component Subsystem:
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