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ENU

ARA4

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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

3

11/07/2024

•

Update of Campaign Claiming instructions — Sublet

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

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

None

Customer Mobility

No sublets are
possible after claiming
Campaign Not
Feasible.

Other customer
satisfaction (as
necessary)

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:
•
•
•

•
•

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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.

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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:

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

Installation
Position:

Installation position: Cell block module

Required tools
Information
Tools:

•
•

T40262 - T40262 - Locking cap
VAS 6558A - High-voltage test adapter

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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.

Required parts
Information
The part numbers of the required parts for the respective vehicle can be seen in the assigned scope
of the accompanying campaigns WRE1, WRE2 or WRE3.
An overview of the required parts is given in the Excel table in the PPN document for the campaign.

Parts overview (example graphic)

Replacing cell block module
Work
Procedure:

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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