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ARA4 - Replacing the Cell Block Module on High-Voltage Battery (Recall Campaign)

Change overview:
Release

Date

Change

1

09/18/2024

•

First publication

2

10/08/2024

•

Update of Warranty processing: Information on how to use
different scopes

Vehicle Type:

Taycan (Y1A / Y1B / Y1C)

Model Year:

As of 2020 up to 2023

Concerns:

Cell block module

Cause:

Under certain circumstances, there is the possibility that production topics may have arisen at
the supplier of the battery cell / battery module.
In this case, a short circuit within the battery modules during the vehicle’s service life cannot be ruled out
under certain circumstances, which could lead to thermal events and later to a fire in the vehicle.

Action:

Replace cell block module.
Information
To find out the campaign scope for Replacing the cell blocks assigned to each vehicle, see PCSS
Vehicle Information.
Depending on the affected cell module the vehicle was assigned exactly to one scope in the
campaigns WRE1, WRE2 or WRE3.
•

WRE1 Campaign is only valid for vehicles with a high-voltage battery with 33 modules (M. No.
9JK): The module number being replaced in the HV Battery corresponds to the same scope number.
Ex: A vehicle showing ARA4 Recall, scope 1 and WRE1 campaign, scope 7 will need to have module
7 replaced on its 33 module HV Battery.

•

WRE2 Campaign is only valid for vehicles with a high-voltage battery with 28 modules (M. No.
9JI): The module number being replaced in the HV Battery corresponds to the same scope number.
Ex: A vehicle showing ARA4 Recall, scope 1 and WRE2 campaign, scope 9 will need to have module
9 replaced on its 28 module HV Battery.

•

WRE3 Campaign is only valid for vehicles that need to replace two or several modules cell
block: Identified modules will be communicated upon return of the battery.

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Overall, all parts and labor for the repair will be claimed via the WRJ5 Workshop campaign. ARA4
warranty claim should be used for mobility only. WRE1-3 should be claimed for $0.
Campaign Claiming instructions
Campaign

ARA4

WRJ5

WRE1/2/3

Parts

0 Parts

Parts Necessary for
HV Battery Removal
and Replacement Parts
list from EVBS used for
module replacement

0 Parts

Mark ARA4 as
“Campaign Not
feasible” and check the
“Warranty Relevant”
box

Labor

0 TU Labor
Mark ARA4 as
“Campaign Not
feasible” and check the
“Warranty Relevant”
box

Sublet

Customer Mobility
Other customer
satisfaction (as
necessary)

Mark as “Campaign
Not feasible” and
check the “Warranty
Relevant” box

NOTE: Parts are not
auto populated for
WRJ5 and must be
added manually
in PCSS
1085 TU – Auto
populated, which
includes Battery R&R
Leak Test Shipping
Prep to EVBS
Labor Cost from
EVBS Forklift Rental
(if necessary – only
until 12/31/24)

0 TU Labor
Mark as “Campaign
Not feasible” and
check the “Warranty
Relevant” box
None

WRJ5 includes Scopes 1 and 2. They are to be used as follows:
WRJ5 Scope 1: Claim Scope 1 when HV Battery modules are replaced by EVBS. All parts will need to be
added manually, and labor will pay out 1085 TU.
Information
Processing campaign ARA4
As a procedural safeguard and for control purposes, this action will involve a two-fold implementation.
This means that administrative processing and all preparatory activities are carried out via the
recall campaign ARA4 and the operational exchange of the cell block module takes place via the
parallelly assigned accompanying action WRJ5.
Affected
vehicles:

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

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Installation
Position:

Installation position: Cell block module

Required tools
Information
Tools:

•
•
•
•
•
•
•
•
•
•

T40262 - T40262 - Locking cap
VAS 6558A - High-voltage test adapter
VAS 6883 - Insulated tool set.
VAS 531 011 - Cooling system service equipment
P90012 - P90012 - Guide pins
VAS 6832 - Master Gear unit elevating platform
VAS 6832/9 - Assembly device
VAS 6884 - High-voltage cordon
P90999 - PIWIS Tester 4
Battery charger with a current rating of at least 90 A, e.g., VAS 5908 - battery charger 90 A

Please refer to the relevant Workshop Manuals for details of the required tools.

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Required parts
Information
•

All parts used for module replacement will be supplied by EVBS on a parts invoice. This will inform
you for which parts to claim on the WRJ5 claim.

Replacing cell block module
Work
Procedure:

Prep Work - Reach out to EVBS at [email protected] to acquire a DDR crate, that will be
used to ship the affected battery to EVBS.
1

Create Vehicle 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.

2

Remove the battery and prepare for shipment to EVBS. These instructions are contained within 
Workshop Manual 'Removing and installing high-voltage battery'. Be sure to remove the equipotential bonding line from the vehicle chassis as shown in step 19.

3

Leak test the HV Battery After removal as part of preparation for shipment to EVBS. NOTE: Please
leak test the battery after removal and before shipping to EVBS.DO NOT remove the diaphragm.
Leak test per WM 270803 Carrying out leak tests on high-voltage battery utilizing tool
T90012.
If you have already performed the leak test as part of APB2 during the same workshop visit and
the battery passed the leak test, you may skip this step. If the HV Battery fails the leak test per the
Workshop Manual, replace the battery and DO NOT send the battery to EVBS. If you require a new HV
Battery, please submit a PRMS Parts Support ticket to Bill Trusky for release of the battery. Please
mention ARA4 in ticket.

4

Once the requested crates has arrived at the Porsche Center, take photos of the DDR
crate before and after crating the affected battery. Packing instructions can be found here:
https://ppn.porsche.com/portal/docs/DOC-514996
After the affected battery has been packaged, contact EVBS at [email protected]
to arrange for a logistics pickup. **Please ensure the entire battery is shipped, do not remove the
ebox or other related components**.
The only parts you can safely remove prior to crating the battery are:
•
•
•
•

5

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Rear Mount Motor Brackets (x2)
Motor Bracket Bolts (x8)
Speed Nuts (x10)
Drain Plugs( x6)

Following the battery & crate being picked up, expect to receive a follow up email from EVBS to
arrange for a logistics drop off of the repaired battery & crate.

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Once your PC receives the battery from EVBS, take photos of the crate and battery upon inspection.
If there are any incidents, report them to EVBS.
Information
PLEASE NOTE THAT IT IS PERMISSIBLE TO MOVE THE VEHICLE AFTER THE BATTERY HAS BEEN
REMOVED. Normally this would not be approved, but because of the repair taking place outside
the Porsche Center, the vehicle can be moved off of the lift after the battery is removed. Replace
the front axle support rear section as shown in WM 400819 Removing and installing the front axle
support (rear section) before moving the vehicle without its HV battery. Save the screws that fasten
to the holes in the HV battery frame (locations 1-4 in torque sequence diagram) for final reinstallation.
THE SPEED LIMIT WHILE MOVING THE VEHICLE WITH NO HV BATTERY INSTALLED IS 4 MPH. There
are further instructions at the end of this document.

7

Install the HV Battery with the new cell module(s) and then store the new Serial Number(s) of the
cell module(s) in PCSS. EVBS will deliver the battery and crate with details of the removed and new
battery module(s) serial numbers. These will be needed for the warranty process. For instructions,
see  Workshop Manual '270855 Replacing cell block module'
NOTE: Your PC will only be responsible for entering the new Serial Number(s) of the replaced cell
modules and the re-installation of the HV Battery. The steps for entering the new Serial Number(s)
are contained in the "Reworking" Section, steps 8 and 9 of WM270855 Replacing cell block module
and - installation instructions for the HV Battery are contained in "Reworking" Section, steps 14
through 27 of WM 270855 Replacing cell block module.

8

Create Vehicle Analysis Log (VAL) using the PIWIS Tester. Return the vehicle analysis log you have
just created with the attribute “Post VAL” using the PIWIS Tester.

9

Enter the campaign in the Warranty and Maintenance logbook. your PC receives the battery from
EVBS, take photos of the crate and battery upon inspection. If there are any incidents, report them
to EVBS.

Warranty processing
Repair Depth:

The Porsche Center is only responsible for removing the battery, performing the leak test before
shipment, and then shipping the battery to EVBS. Then, installing the HV Battery when it returns from
EVBS. Your Porsche Center will receive information with the battery from EVBS on the new Serial
Numbers for the replaced battery modules, which you will need to enter in PCSS in order to properly
document the repair.
Campaign Claiming instructions

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Campaign

ARA4

WRJ5

WRE1/2/3

Parts

0 Parts

Parts Necessary for
HV Battery Removal
and Replacement Parts
list from EVBS used for
module replacement

0 Parts

Mark ARA4 as
“Campaign Not
feasible” and check the
“Warranty Relevant”
box

Labor

0 TU Labor
Mark ARA4 as
“Campaign Not
feasible” and check the
“Warranty Relevant”
box

Sublet

Customer Mobility
Other customer
satisfaction (as
necessary)

Mark as “Campaign
Not feasible” and
check the “Warranty
Relevant” box

NOTE: Parts are not
auto populated for
WRJ5 and must be
added manually
in PCSS
1085 TU – Auto
populated, which
includes Battery R&R
Leak Test Shipping
Prep to EVBS
Labor Cost from
EVBS Forklift Rental
(if necessary – only
until 12/31/24)

0 TU Labor
Mark as “Campaign
Not feasible” and
check the “Warranty
Relevant” box
None

WRJ5 includes Scopes 1, 2, 3, 7, and 8, which are to be used as follows:
•
•
•

•
•

WRJ5 Scope 1: Claim Scope 1 when HV Battery modules are replaced by EVBS. All parts will need to
be added manually, and labor will pay out 1085 TU.
WRJ5 Scope 2 - Claim Scope 2 if the HV Battery fails the leak test and must be replaced at the PC. All
parts will need to be added manually, and labor will pay out 1085 TU.
WRJ5 Scope 3 - Claim Scope 3 if the HV Battery requires replacement after it reaches EVBS. All parts
will need to be added manually, and labor will pay out 1085 TU. This should only be claimed under
PCNA direction.
WRJ5 Scope 7 - Claim Scope 7 if more than 1 HV module is replaced by EVBS. All parts will need to
be added manually, and labor will pay out 1085 TU.
WRJ5 Scope 8 - Claim Scope 8 only under PCNA direction.

NOTE: If more than one HV Battery module is replaced by EVBS, that means that they found more than the
required modules were potentially faultly. PCNA has authorized EVBS to replace any modules found to
be potentially faulty. If more than one module is replaced, it must be invoiced on the WRJ5 Campaign. HV
Batteries and Cell modules cannot be invoiced as subsequent credit appeals, as it will not trigger a
serial number change in PCSS.
Scope 1:

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Not valid for US Market

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Replacing cell block module of high-voltage battery
•

The campaign was carried out in full by the high-voltage support point (repair depth 3).
Labor time:
Labor time: 0 TU

Replacing cell block module

 Damage Number ARA4 099 000 2

Invoicing of any additional costs incurred as part of ARA4
Invoicing:

Costs for transporting the vehicle
If required, the vehicle can be collected from the customer and transported to the Porsche Center or to a
parking space used by the Porsche Center. The costs incurred can be invoiced in the warranty claim for
recall campaign ARA4 with the designation “Transport flat rate” (type: sublet) as an additional part.
Costs for vehicle storage
If third-party parking spaces are used for storing affected vehicles, the costs incurred can be invoiced as
an additional part in the warranty claim for recall campaign ARA4 .
Up to $ 10.85 per day can be invoiced for storing the vehicle.
Costs for customer mobility
If necessary, customer mobility can be granted until the workshop appointment and for the duration of the
implementation of the campaign. The current rules governing the Customer Mobility Program generally
apply here. Depending on the vehicles used to guarantee customer mobility, the costs incurred can be
invoiced as follows:
•

Utilization of Porsche vehicles via Mobility Account (standard process)

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.

© 2024 Porsche Cars North America, Inc.

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