No. 67-23

Service
Technical Information
67/23
ENU
WNP5
8
WNP5 - Replacing Drain Hose on Heating/Fresh-Air Unit (Workshop Campaign)
Revision:
This bulletin replaces bulletin Group 8 67/23 WNP5, dated June 5, 2023.
Model Year:
As of 2017 up to 2018
Model Line:
Cayenne (92A)
Concerns:
Drain hose on heating/fresh-air unit
Cause:
A drain hose not manufactured according to specifications may have been installed on the
heater/fresh-air unit on affected vehicles.
If so, it cannot be ruled out that condensation may accumulate in the air conditioning drainage system
during regular operation and over the service life of the vehicle. As a result, moisture can enter the
vehicle interior via the footwell ventilation duct.
Action:
Replace the drain hose on the heating/fresh-air unit.
Affected
Vehicles:
Only vehicles assigned to the campaign (see also PCSS Vehicle Information).
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Installation
Position:
Installation position of drain hose on heating/fresh-air unit
Arrow – Drain hose on heating/fresh-air unit (Replacing)
Required parts
Part Info:
Part No.
Designation
Quantity
V04015005H
 Drain hose
1 piece
Replacing drain hose on heating/fresh-air unit
Work Procedure: 1
2
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Open passenger’s side door and move the passenger seat fully back.
Remove the cover under the dashboard on the passenger’s side.  Workshop Manual '702219
Removing and installing cover under dashboard'
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Technical Information
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Information
Note the installation position of the drain hose  Drain
hose. The new drain hose must be installed in this
position.
3
Replacing drain hose on heating/fresh-air unit
Drain hose
3.1
Loosen spring band clamp  Pulling off
drain hose -3- and pull the drain hose off the
heating/fresh-air unit.
4
Disconnect and remove the drain hose from the body
wall.
5
Coat the new drain hose with water.
6
If there is no spring band clamp on the new drain
hose, use the clamp from the old hose.
7
Install the new drain hose, but do not yet fasten the
spring band clamp. Check that the drain hose is seated correctly.
8
Move the vehicle onto a lifting platform and raise it.  Workshop Manual '4X00IN Lift vehicle'
9
From the underbody of the vehicle, ensure again that
the drain hose is seated correctly.
Lug  Drain hose seating -1- must point upwards
and drain hose opening  Drain hose seating -2must point downwards. It is also important that the
drain hose is seated correctly along entire groove 
Drain hose seating -Arrow- in the body wall. Tighten
the drain hose from below if necessary.
Pulling off drain hose
10 Remove vehicle from the lifting platform. 
Workshop Manual '4X00IN Lifting the vehicle'
Drain hose seating
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11 Fasten spring band clamp  Pushing on drain hose
-3- to the drain hose.
12 Install the cover under the dashboard.  Workshop
Manual '702219 Removing and installing cover under
dashboard'
13 Enter the campaign in the Warranty and Maintenance
booklet.
Pushing on drain hose
Warranty processing
Scope 1:
Labor time:
Labor time: 84 TU
Replacing drain hose on heating/fresh-air unit
Includes:
Moving vehicle onto lifting platform and removing it
Removing and installing cover under dashboard
Removing and installing of the front inner door entry guard
and the laying of the carpet to the side for better accessibility
Required parts:
V04015005H
Drain hose
1 piece
 Damage Code WNP5 066 000 2
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.
© 2023 Porsche Cars North America, Inc.
Aug 1, 2023
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