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AMA3 - Reworking Various Threaded Connections on the Chassis (Recall Campaign)

Model Line:

Taycan (Y1A, Y1B)

Model Year:

2021

Concerns:

Hexagon clamping nut M12 x 1.5 on various threaded connections on the chassis

Information:

There is a possibility that clamping nuts, on which the thread was not manufactured
according to specifications, were installed on various threaded connections on the chassis
on the affected vehicles.
As a result, the required tightening torque was reached before the threaded connection was actually
tightened fully when installing the clamping nuts. There is therefore no guarantee that the affected
threaded connections will remain sufficiently tight over the service life of the vehicle.

General
Information
on Warranty
Processing:

The scopes listed below for this measure do not include published labor time and they only provide
the minimum number of parts for reworking the respective vehicles. For this unique business
case all labor and any additional parts that may be required depending on the result of a campaign scope
check must be submitted as a subsequent credit appeal to the initial paid campaign line. Any additional
parts and labor added to the initial AMA3 campaign line that is not a part of the published scope will result
in a system error preventing the claim from processing. Due to this unique business case, the campaign
scope must be submitted and paid first, then a credit for additional parts and labor thereafter.

Action required: Rework threaded connections on the front and rear axle.
On vehicles that have already been delivered to customers, the screwed components must also be
checked for damage.
Information
Please note that different screw positions on the front and rear axle must be reworked on the affected
vehicles.
The following specific campaign scopes have therefore been defined for reworking the threaded
connections. Every vehicle is clearly assigned just one campaign scope.
The relevant M12 x 1.5 fastening nuts must be replaced on all affected vehicles, depending on the
assigned scope.
In addition, the relevant fastening screws must also be replaced.
On vehicles on which a component is screwed at the relevant screw point (e.g. actuator or
connecting link), depending on the assigned scope, the thread on the relevant component must be
checked and the component may also have to be replaced, depending on the result of the check.

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On vehicles that have already been delivered to customers, the components that are screwed
together must also be checked for damage caused by relative movements while driving as fittings,
contact surfaces or bores on the individual components may have been damaged.
The relevant components may also have to be replaced, depending on the result of the check.
Example of a damaged thread on the actuator:

 Damaged thread on actuator

Damaged thread on actuator
Example of damage caused by driving:  Damage to
component caused by driving
For an overview of each of the assigned scopes, see list
below.
The scope that is clearly assigned to an affected vehicle is
shown in the PCSS vehicle information for this campaign.
Scope 1 – Scope 9: Not relevant for this vehicle type.
Scope 10:  Technical Information 'Scope 10:
Reworking threaded joints on the front axle'
•

•

Reworking threaded joint securing spring struts on
lower control arms at the left and right on the
front axle
Reworking threaded joint securing connecting link
(suspension/stabilizer) to left and right anti-roll
bar on the front axle

Damage to component caused by driving

Scope 11:  Technical Information 'Scope 11: Reworking threaded joints on the rear axle'

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•

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Reworking front threaded joint securing lower trailing arms at left and right on the rear axle
housing
Reworking bolts securing lower trailing arm to left and right wheel bearing housing on the
rear axle

Scope 12:  Technical Information 'Scope 12: Reworking threaded joints on the rear axle'
•
•
•
•

Reworking bolts securing (front) upper longitudinal arm to left and right rear axle carrier
Reworking threaded joint securing upper (front) longitudinal arm to left and right wheel
bearing housing on the rear axle
Reworking bolts securing (rear) upper trailing arm to left and right rear axle carrier
Reworking threaded joint securing upper (rear) trailing arms to left and right wheel bearing
housing on the rear axle

Scope 13:  Technical Information 'Scope 13: Reworking threaded joints on front and rear axle'
•
•
•
•
•
•

Reworking threaded joint securing spring struts on lower control arms at the left and right on
the front axle
Reworking threaded joint securing connecting link (suspension/stabilizer) to left and right
anti-roll bar on the front axle
Reworking bolts securing (front) upper longitudinal arm to left and right rear axle carrier
Reworking threaded joint securing upper (front) longitudinal arm to left and right wheel
bearing housing on the rear axle
Reworking bolts securing (rear) upper trailing arm to left and right rear axle carrier
Reworking threaded joint securing upper (rear) trailing arms to left and right wheel bearing
housing on the rear axle

Scope 14:  Technical Information 'Scope 14: Reworking threaded joints on front and rear axle at the
right'
•
•

Reworking threaded joint securing connecting link (suspension/stabilizer) to right anti-roll bar
on the front axle
Reworking threaded joint securing lower trailing arm to right wheel bearing housing on the
rear axle

Scope 15:  Technical Information 'Scope 15: Reworking threaded joint on the left of the rear axle'
•

Reworking threaded joint securing shock absorber on lower transverse control arm at left on
the rear axle

Scope 16:  Technical Information 'Scope 16: Reworking threaded joints on the front axle'
•
•

Reworking threaded joint securing spring struts on lower control arms at the left and right on
the front axle
Reworking threaded joint securing steering gear to front-axle carrier at the left

Scope 17:  Technical Information 'Scope 17: Reworking threaded joint on the front axle'
•

Reworking threaded joint securing electric drive motor to front-axle module at the front left

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Scope 18:  Technical Information 'Scope 18: Reworking threaded joints on front and rear axle'
•
•

Affected
Vehicles:

Reworking threaded joint securing spring struts on lower control arms at the left and right on
the front axle
Reworking front threaded joint securing lower trailing arms at left and right on the rear axle
housing

Only vehicles assigned to the campaign (see also PCSS Vehicle Information). This campaign affects 395
vehicles.

Parts required
Parts Info:

Clamping nuts required for all affected vehicles:
Part No.

Designation

Qty.

PAF909664

Lock nut, M12 x 1.5

Scope-specific

Information
Due to the different screw positions to be reworked on the front and rear axle of each vehicle, the required
fastening nuts and screws are listed in the relevant scope.
All additional parts that are required must be determined independently in accordance with the Porsche
Electronic Parts Catalogue (PET).

Required tools
Tools:

General tools:
•

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, 40–200 Nm (30–148 ftlb.), e.g. VAG 1332 Torque wrench, 40-200 Nm
(30-148 ftlb.)
Electronic torque angle torque wrench, 2-100 Nm (1.5-74 ftlb.), e.g. 9768 - Electronic torque
wrench, 2 - 100 Nm (1.5 - 74 ftlb.)
Electronic torque angle torque wrench, 20-400 Nm (15-296 ftlb.), e.g. VAS 6942 Torque angle
torque wrench, 20-400 Nm (15-296 ftlb.)

•
•
•

All other required (special) tools in accordance with the linked Workshop Manuals depending on the
relevant assigned scope.

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Scope 10: Reworking threaded joints on the front axle
Parts Info:

Parts required for this scope:
Part No.

Designation
– Use

Qty.

PAF909664

 Lock nut, M12 x 1.5
– Spring strut to wishbone
– Connecting link to anti-roll bar

4 ea.

PAF108544

 Lens-head screw, M12 x 1.5 x 90
– Spring strut to wishbone

2 ea.

N 10793603

 Hexagon-head bolt, M12 x 1.5 x 60
– Connecting link to anti-roll bar

2 ea.

Information
For all other parts that may be required, see Porsche Electronic Parts Catalogue (PET).
Work Procedure: 1

Raise the vehicle using a lifting platform  Workshop Manual '4X00IN Lifting the vehicle'.

2

Remove front wheel at the left and right  Workshop Manual '440519 Removing and installing
wheel'.

3

Replace the following threaded connections on the front axle at the left and right:
•
•

Threaded joint securing spring strut to lower trailing arm on the front axle
Threaded joint securing connecting link to anti-roll bar on the front axle

Also only for vehicles that have already been delivered to customers: After removing the
relevant bolts, perform a visual inspection for signs of damage caused by driving in the area
around the relevant screw points.
The relevant components may also have to be replaced, depending on the result of the check.
3.1

Release air from and fill air into front air springs at the left and right using the PIWIS Tester 
Workshop Manual '430117 Bleeding and filling the levelling system'.

3.2

Support the wheel bearing housing using a suitable engine and gearbox jack. On vehicles
with PCCB brake discs, make sure not to damage the brake disc.

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3.3

Loosen and unscrew fastening nut 
Air-spring strut fork -3- on spring strut fork 
Air-spring strut fork -1-.
Counter fastening screw  Air-spring strut
fork -4- while doing this. Then remove the
fastening screw.

3.4

Insert a new fastening screw into spring strut
fork  Air-spring strut fork -1- and lower
trailing arm  Air-spring strut fork -2-.

3.5

Screw on new fastening nut and tighten.
Counter the fastening screw while doing this.
Tightening torque 90 Nm (67 ftlb.)
Torque angle +120°

Air-spring strut fork

3.6

Lower the engine and gearbox jack and remove it.

3.7

Loosen and unscrew fastening nut  Connecting link for anti-roll bar -2- from connecting link
 Connecting link for anti-roll bar -1- to anti-roll bar.
Counter fastening screw  Connecting link for anti-roll bar -3- while doing this. Then remove
the fastening screw.
Please note: Fastening nut  Connecting link
for anti-roll bar -4- is not affected and must
not be loosened.

3.8

Insert new fastening screw into the anti-roll
bar and connecting link.

3.9

Screw on new fastening nut and tighten.
Counter the fastening screw while doing this.
Tightening torque 70 Nm (52 ftlb.)
Torque angle +90°

3.10

Repeat the procedure on the other side of
the vehicle.

3.11

Connecting link for anti-roll bar

Fill the air spring system using the PIWIS Tester  Workshop Manual '430117 Bleeding and
filling the levelling system'.

4

Install front wheel at the left and right  Workshop Manual '440519 Removing and installing wheel'.

5

Lower the vehicle and remove it from the lifting platform.

6

Enter the campaign in the Warranty and Maintenance booklet.
End of action required
For warranty processing, see General information on warranty processing and Scope 10
under  Technical Information '440519 Warranty processing'.

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Scope 11: Reworking threaded joints on the rear axle
Parts Info:

Parts required for this scope:
Part No.

Designation
– Use

Qty.

PAF909664

 Lock nut, M12 x 1.5
– Lower trailing arm to rear axle housing
– Lower trailing arm to wheel bearing housing

4 ea.

N 10696901

 Hexagon flange bolt, M12 x 1.5 x 120 x 90
– Lower trailing arm to rear axle housing

2 ea.

N 10695901

 Hexagon-head bolt, M12 x 1.5 x 105
– Lower trailing arm to wheel bearing housing

2 ea.

Information
For all other parts that may be required, see Porsche Electronic Parts Catalogue (PET).
Work Procedure: 1

Read and 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'.

2

Isolate the high-voltage system from the power supply and complete the relevant documentation 
Workshop Manual '2X00IN Isolating high-voltage system from power supply/Starting high-voltage
system'.

3

Remove high-voltage battery  Workshop Manual '270819 Removing and installing high-voltage
battery'.

4

Replace the following threaded connections on the rear axle at the left and right:
•
•

Front threaded joint securing lower trailing arms to rear axle housing
Threaded joint securing lower trailing arms to wheel bearing housing on the rear axle

Also only for vehicles that have already been delivered to customers: After removing the
relevant bolts, perform a visual inspection for signs of damage caused by driving in the area
around the relevant screw points.
The relevant components may also have to be replaced, depending on the result of the check.

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