Service

Technical Information

136/23 ENU

WPL8

8

WPL8 - Replacing Electric Passenger Compartment Heater (Workshop Campaign)

Revision:

This bulletin replaces bulletin Group 8 136/23 WPL8, dated October 5, 2023.

Model Year:

As of 2020 up to 2023

Model Line:

Taycan (Y1A / Y1B / Y1C)

Concerns:

Electric passenger compartment heater

Cause:

Due to a potential material error, the heater coating in the electric passenger compartment
heater can become detached on the affected vehicles during prolonged utilization of the
heating and with high heating output, especially in countries with frequently cold environmental conditions.
This may result in the heating function being impaired and the vehicle not defrosting properly when
driving.

Action:

Replace electric passenger compartment heater.

Affected
Vehicles:

Only vehicles assigned to the campaign (see also PCSS Vehicle Information).
Information
Please note that even on vehicles not assigned to this campaign, the high-voltage heater may fail for
various reasons. These vehicles must be processed via the standard repair process (car down case) and
will not be reactively assigned to this campaign.

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Nov 8, 2023
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8

Service
WPL8

Technical Information

ENU 136/23

Installation
Position:

Installation position
– (Replacing) Electric passenger compartment heater

Required parts and materials
Information
According to the latest knowledge, it is no longer necessary to replace the hexagon nut
(N 10737001) and the hexagon socket screw (N 91096801) when replacing the electric passenger
compartment heater. These can therefore be reused. For this reason, the two part numbers
mentioned are removed from this campaign.
For the transitional period, it will continue to be possible to invoice these after installation. The remaining
stocks of the internal hexagon round-head bolt (N 91096801) and the hexagon nut (N 10737001) on the
market can be used up if necessary. It is not necessary to return the parts.

Parts Info:

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Part No.

Designation

Number

V04015007AK

 Electric passenger compartment heater

1 piece

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Technical Information

136/23 ENU

WPL8

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Information
From 11/1/23 forward, the campaign part # will not be available to order. As communicated via PPN, the
spare part # for the HV Heater will be used for both WPL8 and Car Down (non-campaign) repairs. Either
part can be invoiced in WWS for the campaign.
The spare part is:

Materials:

Part No.

Designation

Number

PAD963507A

 Electric passenger compartment heater

1 piece

Only if required (usually already available in the Porsche Center):
Part No.

Designation

Quantity

00004330516

 Coolant additive, 20-liter/ 5.28 gal container
– Cooling system

As much as required
(max. 0.5 liter/ 16.9
required per vehicle)

Required tools
•
•
•
•
•
•
•

•

VAS 6883A - Insulated tool set
VAS 6890 - Spring band clamp pliers
Torque wrench, 2-10 Nm (1.5-7.5 ftlb.), e.g. V.A.G 1783 - Torque wrench, 2-10 Nm (1.5-7.5
ftlb.)
VAS 531 011 - Cooling system service equipment
3093 - 3093 - Hose clamp
VAS 6675A - Funnel
Battery charger with a current rating of at least 90 A and - if required - also with a current and
voltage controlled charge map for lithium starter batteries, e.g. VAS 5908 90 A battery
charger
P90999 - PIWIS Tester 4

Replacing electric passenger compartment heater
WARNING
Incorrect handling of high-voltage components
•

Electric shock

•

Short circuit

•

Fire

•

Explosion

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Technical Information

ENU 136/23

WPL8



Only appropriately trained and authorized persons are permitted to work on high-voltage vehicles and
components.



Required qualification: High voltage technician or high voltage expert.



Observe national requirements and legislation for this work.



Always use insulated tools, e.g. VAS 6883 Insulated Tool Set when working on these components.



Observe general warning notes for working on the high-voltage system.  Workshop Manual '2X00IN
General warning notes for working on the high-voltage system'

Information
If necessary, a data reconciliation from the vehicle analysis log (VAL) can be used to check whether the
correct electric passenger compartment heater has already been installed.
To do this, perform a reconciliation of the date of manufacture of the passenger compartment heater
installed in the vehicle in the PCSS and function “Comparison of diagnostic data (FAP)” with the currently
uploaded vehicle analysis log (FAP).
•

If the date of manufacture is later than February 14, 2023 (manufacture > 14.02.2023), an
optimized component has already been installed on this vehicle  Reconciliation of manufacturing
date for high-voltage heater (FAP). In this case, it is not necessary to replace the electric passenger
compartment heater again.

•

If the date of manufacture is before February 14, 2023 (date of manufacture < 14.02.2023), the
electric passenger compartment heater must be replaced.

Reconciliation of manufacturing date
for high-voltage heater (FAP)
Work Procedure: 1

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CreateVehicle Analysis Log (VAL) using the PIWIS Tester. Mark the vehicle analysis log you have
just created with the attribute “Pre-VAL” and after carrying out the campaign, return it using the
PIWIS Tester.

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2

136/23 ENU

WPL8

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Remove electric passenger compartment heater 
Electric passenger compartment heater -1-.
For this, see  Workshop Manual '828019
Removing and installing electric passenger
compartment heater'

Information

Electric passenger compartment heater
Please note that with only vehicles with the auxiliary
heater (M No. 9M3) equipment option, is a thermal
insulation (case) also Thermal insulation (case) -1installed on the electric passenger compartment heater.
This must be converted from the old to the new electric
passenger compartment heater.
3

Install a newelectric passenger compartment heater.
For this, see  Workshop Manual '828019
Removing and installing electric passenger
compartment heater'
Thermal insulation (case)

Information
For the new electric passenger compartment heater to be back-documented correctly, the PIWIS
Tester must be logged in online and in the Porsche Partner Network (PPN).
4

Teach electric passenger compartment heater.  Workshop Manual '828055 Replacing electric
passenger compartment heater'

5

CreateVehicle Analysis Log (VAL) using the PIWIS Tester. Mark the vehicle analysis log you have
just created with the attribute “Post-VAL” and after carrying out the campaign, return it using the
PIWIS Tester.

6

Enter the campaign in the Warranty and Maintenance logbook.

Warranty processing
Information
The labor time specified below was determined specifically for carrying out this campaign and may differ
from the labor times published in the Labor Operation List in PCSS.

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WPL8

Scope 1:

Technical Information

ENU 136/23

Labor time:
Replacing electric passenger compartment heater
Includes:
Deactivating and activating high-voltage system
Draining and filling coolant
Bleeding cooling system
Removing and installing luggage compartment tray
Remove and install front cover
Loosening and fastening front end fuse box
Loosening and fastening ground strap for battery
Create pre- and post-VAL

Labor time: 572 TU

Required parts:
V04015007AK

Electric passenger compartment heater

1 piece

Required materials (only if needed):
00004330516

Coolant additive (20-liter/ 5.28 gal container)

0.03 piece

 Damage Number WPL8 066 000 2

Customer mobility / Vehicle transport
Customer mobility for the duration of the carrying out the action
If necessary, customer mobility can be granted and invoiced. As a rule, the current rules governing the
Customer Mobility Programme apply here.
Vehicle collection from customer (collection and delivery service)
If the customer cannot keep a workshop appointment at short notice to carry out the action, offer to
collect the vehicle from the customer and return it after the repair has been completed (collection and
delivery service). This service can be invoiced via the mobility voucher in accordance with the applicable
preconditions.
If the costs actually incurred exceed the value of the mobility voucher, the remaining amount can be borne
from the local customer goodwill budget.
Vehicle collection from customer (vehicle transport)
If necessary, the customer can also arrange for the vehicle to be collected and transported to the
workshop via the respective Porsche Center. Vehicle transport must be commissioned and invoiced by
the Porsche Center responsible.
The costs incurred in the campaign claim can be invoiced as external services (sublets) in the campaign
application for WPL8 workshop campaign. Please attach a copy of the invoice to the campaign claim in
“External services”.

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AfterSales

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Technical Information

136/23 ENU

WPL8

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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.

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