Service

Technical Information

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ARB5

2

ARB5 - Replace the Cell Block Module on High-Voltage Battery (Recall Campaign)

Change
Overview:

Release

Date

Change

0

11/20/2024

•

First publication

1

01/24/2025

•

Update of Campaign
Claiming instructions

2

02/18/2025

•

Addition of information:
Procedure for multiple
campaigns on cell modules

3

03/07/2025

•

Update of Campaign
Claiming instructions:

4

07/02/2025

•

Correction: M-Option
numbers under 'A ction'

5

09/22/2025

•

Information added regarding
scope 14, 15, and 16 of
WRJ5

Model Year:

As of 2020 up to 2024

Vehicle Type:

Taycan (Y1A / Y1B / Y1C)

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 concerning the affected vehicles.
If so, 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.

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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. J9K):
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. J9I):
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.

Overall, all parts and labor for the repair will be claimed via the WRJ5 Workshop campaign. ARB5 and
WRE1-3 should both both closed and claimed for $0 in WWS by marking the campaign as "Not Feasible" and
selecting the "Warranty Relevant" flag.
Affected
Vehicles:

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

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Technical Information

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ARB5

2

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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Replace cell block module
Work
Procedure:

Prep Work - Request a DDR Crate via the EVBS/Spiers ordering portal in PPN. The DDR crate 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”.

2

Remove the battery and prepare for shipment to EVBS. These instructions are contained within WM
270819 '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 APB5 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:
•
•
•
•

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

5

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.

6

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.

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ARB5

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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 the
re-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

Alert EVBS to arrange a crate pickup for the crate and materials used to transport the battery. Logistics
will be handled by EVBS.

10 Enter the campaign in the Warranty and Maintenance logbook.

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Information
Procedure for multiple campaigns on cell modules
Please note that open campaigns involving a cell module replacement (APB5, ARA4, and ARB5) must be
completed before conducting a VAL evaluation.
Why not perform a direct VAL evaluation after replacement?
If the evaluation is performed immediately after replacement, the result will likely still show as "Red" within
PCSS for ARB6 and/or ARB7.
A direct VAL evaluation is not effective because the following criteria must first be met:
•

At least two VAL evaluations after the replacement.

•

2-3 charge cycles must be completed.

•

A capacity adaptation (reset) is required to neutralize the results.

•

The inclusion of GBT codes in the database must be ensured.

Warranty processing
The specified working times were determined specifically for the completion of this campaign and may differ
from the working times published in the Labor Operation List in PCSS.
Repair depth:

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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.

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Technical Information
Campaign
Claiming
instructions:

174/24 ENU

ARB5

2

Campaign

ARB5

WRJ5

WRE1/2/3

Parts

0 Parts

Parts Necessary for HV

0 Parts

Mark ARB5 as
“Campaign Not feasible”
and check the “Warranty
Relevant” box

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

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
WRJ50000003 Battery Transport costs
to and from EVBS.
Must be claimed under
this part number in
PCSS and not as a
sublet. A copy of the
invoice showing the
actual amount must be
attached to the job line /
claim.
Labor

Sublet

0 TU Labor

1085 TU Labor

0 TU Labor

Mark ARB5 as
“Campaign Not feasible”
and check the “Warranty
Relevant” box

Auto populated, which
includes Battery R&R
Leak Test Shipping Prep
to EVBS

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

None

Labor Cost from EVBS

None

No sublets are possible
after claiming Campaign
Not Feasible.

Customer Mobility
Other customer
satisfaction (as
necessary)

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WRJ5 includes Scopes1, 2 ,3, 7, 8, 14, 15, and 16, 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 faulty.
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.
WRJ5 Scope 14: Claim Scope 14 if the HV Battery fails the leak test and must be replaced at the
PC. Includes installation of new J1.2 HVB and first-time conversion. All parts will need to be added
manually, and labor will pay out 1604 TU.
WRJ5 Scope 15: Claim Scope 15 only under PCNA direction.
WRJ5 Scope 16: Claim Scope 16 if the HV Battery requires replacement after it reaches EVBS. Includes
installation of new J1.2 HVB and first-time conversion. All parts will need to be added manually, and
labor will pay out 1604 TU.
Please note that if a battery Recall APB5/ARA4/ARA5 has already been claimed on a vehicle and now
another module has been flagged for replacement under ARB5, then WRJ5 will have already been
claimed and cannot be claimed again. In these rare cases, the vehicle will be added to WRT3 workshop
campaign, which is the same as WRJ5, but for vehicles where WRJ5 has already been claimed.

WRT3 includes Scopes 5, 6, 7, 8, 9, 14 and 15 which are to be used as follows:
•
•
•
•
•

WRT3 Scope 5 (28 Module HVB)/ Scope 6 (33 Module HVB): Claim Scope 5/6 if 1 HV module is
replaced by EVBS. All parts will need to be added manually, and labor will pay out 1085 TU.
WRT3 Scope 7: Claim Scope 7 only under PCNA direction.
WRT3 Scope 8: Claim Scope 8 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.
WRT3 Scope 9: Claim Scope 9 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.
WRT3 Scope 14 (28 Module HVB)/ Scope 15 (33 Module HVB): Claim Scope 14/15 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.

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.

Sep 22, 2025
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