Service

Technical Information

2025

ENU

WSL3

8

WSL3 – Replacing Electric Passenger Compartment Heater (Workshop Campaign)
Model Line:

Taycan (Y1A/Y1B/Y1C)

Model Year:

As of 2020 up to 2024

Concerns:

Electric passenger compartment heater

Cause:

The available vehicle data shows that there may be short-term functional restrictions in the electric
passenger compartment heater.
To ensure the heating and dehumidification function, it is necessary to replace the electric passenger
compartment heater.

Action:

Replace the electric passenger compartment heater.

Affected
Vehicles:

Only vehicles assigned to the campaign (see also PCSS Vehicle Information).

AfterSales

Sep 2, 2025
Page 1 of 5

8

Service
WSL3

ENU

Technical Information

2025

Installation
Position:

Installation position
– (Replacing) electric passenger compartment heater

Required parts and materials
Parts Info:

Material:

Sep 2, 2025
Page 2 of 5

Part No.

Designation

Quantity

PAD963507A

⇒ Electric passenger compartment heater

1 piece

N 10737001

⇒ Hexagon nut, self-locking

4 pieces

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

Quantity as required
(max. 0.5 liter /
16.9 fl oz required
per vehicle)

AfterSales

Service

Technical Information

2025

ENU

WSL3

8

Required tools
•
•
•
•
•
•
•
•

VAS 6883A - Insulated tool set
VAS 6890 - Spring band clamp pliers
Torque wrench, 2-10 Nm (1.5-7.5 ftlb.), such as 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 characteristic for lithium starter batteries, such as 90 A battery charger
P90999 - P90999 - PIWIS Tester 4

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

Electric shock

•

Short circuit

•

Fire

•

Explosion

Þ
⇒

Only appropriately trained and authorized persons may work on high-voltage vehicles and components.

Þ
⇒

Required qualification: High voltage technician or high voltage expert.

Þ
⇒

Observe national requirements and legislation for this work.

Þ
⇒

Always use insulated tools, such as an insulated tool set when working on these parts.

Þ
⇒

Þ Workshop Manual '2X00INB5 General
Observe general warning notices for working on the high-voltage system. ⇒
warning notices for working on the high-voltage system'

Work Procedure: 1

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.

AfterSales

Sep 2, 2025
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8

Service
WSL3

ENU

2

Technical Information

2025

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

Please note that only vehicles with equipment add-on
auxiliary heater (M No. 9M3)have a thermal insulation
Þ Thermal insulation (case) -1- installed
(case) additionally⇒
on the electric passenger compartment heater. This must
be transferred from the old to the new electric passenger
compartment heater.
3

Electric passenger compartment heater

Install a new electric 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 the 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.

Sep 2, 2025
Page 4 of 5

AfterSales

Service

Technical Information
Scope 1:

2025

ENU

WSL3

8

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

Labor time: 572 TU

Required parts:
PAD963507A

Electric passenger compartment heater

1 piece

N 10737001

Hexagon nut, self-locking

4 pieces

Required materials (only if needed):
00004330516

Coolant additive (20-liter container / 5.28 gal)

0.03 piece(s)

Þ Damage number WSL3 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.

© 2025 Porsche Cars North America, Inc.

AfterSales

Sep 2, 2025
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