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WLD0 - Replacing High-Voltage Line Between High-Voltage Distributor and E-Box
(Workshop Campaign)
Model Line:

Taycan (Y1A)

Model Year:

2020

Subject:

High-voltage line

Information:

It is possible that the single-wire seal in the connector housing of the high-voltage line between
the high-voltage distributor and E-box was installed incorrectly on the affected vehicles.
This can result in a conductive medium entering the connector housing in some cases. Malfunctions may
occur depending on the amount of penetration and a red warning message appears in the instrument
cluster.

Remedial
Action:

Replace high-voltage line between the high-voltage distributor and E-box.

Affected
Vehicles:

Only vehicles assigned to the campaign (see also PCSS Vehicle Information). There are 591 vehicles
affected by this campaign.

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Installation
Position:

Installation position of high-voltage line

Required parts and materials
Parts Info:

Materials:

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Part No.

Designation
– Use

Qty.

9J1971131A

 High-voltage wire harness

1 ea.

PAF106825

 Cheese head bolt, M8 x 50
– Strut to body

4 ea.

(only if required)
Part No.

Designation

Qty.

00004330516

 Coolant additive, 20-liter container
– Cooling system

As much as required
(approx. 1 liter
required per vehicle)

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Required tools
Information
The Taycan (Y1A) is equipped as standard with a lithium starter battery.
Lithium starter batteries must only be charged using a suitable battery charger that has a current
and voltage-controlled charge map.
For further information about the battery chargers to be used, see  Workshop Manual '270689
Charging battery/vehicle electrical system'.
Tools:

•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•

VAS 6883 Insulated Tool Set
VAS 6558A High-voltage testing module
VAS 6558/9–6 High-voltage test adapter HVA 280
VAS 6410 Contact Surface Cleaning Set or equivalent
T40262 - Locking cap
9696 - Filling device
3093 - Hose clamp or equivalent
VAS 6675A Funnel
VAS 6968 Coolant filling device or equivalent
VAS 6096/2 Vacuum pump
VAG 1274B Tester for Cooling System
VAS 6890 Spring Band Clamp Pliers or equivalent
VAS 6935 Pole terminal puller or equivalent
Torque wrench, 2 - 10 Nm (1.5 - 7.5 ftlb.), e.g. VAG 1783 Torque wrench, 2-10 Nm (1.5-7.5
ftlb.)
Torque wrench, 6 - 50 Nm (4.5 - 37 ftlb.), e.g. VAG 1331A Torque wrench, 6-50 Nm (4.5-37
ftlb.)
Torque wrench, 20 - 100 Nm (15 - 74 ftlb.), e.g. VAS 5820 Torque wrench, 20-100 Nm (15-74
ftlb.) or equivalent
Electronic torque angle torque wrench, e.g. 9768 - Electronic torque wrench, 2 - 100 Nm (1.5 74 ftlb.)
Battery charger with a current rating of at least 90 A and a current and voltage-controlled
charge map for lithium starter batteries, e.g. VAS 5908 Battery charger 90 A
9900 - PIWIS Tester 3

Replacing high-voltage line between the high-voltage distributor and E-box
WARNING
Incorrect handling of high-voltage components
•

Electric shock

•

Short circuit

•

Fire

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•

Explosion



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 High-voltage 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'

Work Procedure: 1

2

Observe general warning notes for working on the high-voltage vehicle electrical system 
Workshop Manual '2X00IN General warning notes for working on the high-voltage system'.
Isolate the high-voltage system from the power supply  Workshop Manual '2X00IN Isolating
high-voltage system from power supply/Starting high-voltage system'.

Information
Handling high-voltage lines:

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•

Do not support yourself or your tools on high-voltage lines and their components.

•

Work involving metal-removing, deforming and sharp-edged tools close to high-voltage components
and lines is prohibited.

•

Work involving heat sources such as welding, soldering, hot air and thermal bonding close to
high-voltage components and lines is prohibited.

•

High-voltage lines must not be extensively bent or kinked.

•

A visual inspection of the high-voltage connectors must be performed before installing the
high-voltage lines. If there are signs of damage to the connectors, contacts and seals, the
high-voltage line must be replaced.

•

In the event of queries or uncertainties, consult the relevant high voltage technician.

3

Replace high-voltage line between high-voltage distributor and e-box.
For instructions, see  Workshop Manual '27931900 Removing and installing high-voltage line from
high-voltage distributor to E-box'.

4

Start the high-voltage system  Workshop Manual '2X00IN Isolating high-voltage system from
power supply/Starting high-voltage system'.

5

Enter the campaign in the Warranty and Maintenance booklet.

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Warranty processing
Information
The specified working time was determined specifically for carrying out this campaign and includes all
necessary preliminary and subsequent work.
The working time may differ from the working times published in the Labor Operation List in the PCSS.

Scope:

Working time:
Labor time: 957 TU

Replacing high-voltage line between high-voltage distributor and E-box
Includes:
Raising and lowering the vehicle
Removing and installing front left wheel
Removing and installing front left wheel housing liner
Connecting and disconnecting battery charger
Connecting and disconnecting PIWIS Tester
Isolating high-voltage system from power supply and
starting high-voltage system
Removing and installing vehicle electrical system battery
Draining and filling coolant
Bleeding the cooling system
Removing and installing front-axle support (rear section)
Removing and installing 11 kW high-voltage charger
Loosening and securing evaporator (chiller)
Removing and installing high-voltage distributor
Parts required:
9J1971131A

High-voltage wire harness

1 ea.

PAF106825

Cheese head bolt

4 ea.

Required materials (only if required):
00004330516

Coolant additive (20-liter container)

0.05

 Damage Code WLD0 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.

© 2020 Porsche Cars North America, Inc.

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