No. 158-21

Service
Technical Information
158/21 ENU WMM2
4
WMM2 – Replacing Upper Trailing Arm on Front Axle (Workshop Campaign)
Model Line:
Cayenne (9YA / 9YB)
Model Year:
2021
Concerns:
Front-axle trailing arm, top right
Information:
There is a possibility that trailing arms installed on the top right of the front axle on the affected
vehicles do not meet the required specifications.
If this is the case, contact with the air-spring strut can occur on vehicles with an air suspension system.
As a result, the air-spring strut could be damaged and lose pressure.
Action required: Replace upper right trailing arm on front axle.
Affected
Vehicles:
Only vehicles assigned to the campaign (see also PCSS Vehicle Information).
AfterSales
May 13, 2022
Page 1 of 11
4
Service
Technical Information
ENU 158/21
WMM2
Installation
Position:
1
Installation position of upper right trailing arm on front axle
– Upper right trailing arm on front axle (replace)
Required parts and materials
Information
The required parts and materials must be determined based on the scope of the campaign scope
assigned to the respective vehicle. For an overview of the campaign scopes, see  Technical Information 'Warranty processing'
Required tools
Tools:
May 13, 2022
Page 2 of 11
•
•
•
•
•
•
•
9229/1 - Puller hook
T40183 - Insert tool
VAS 6826 - Steering wheel balance
VAS 6918 - Quick-clamping unit
Tie-wrap pliers, e.g. VAS 6927 - Tie-wrap pliers
Suitable engine and gearbox jack, e.g. VAS 6931 - Engine and gearbox jack
Torque wrench, 2-10 Nm (1.5-7.5 ftlb.), e.g. V.A.G 1783 - Torque wrench, 2-10 Nm (1.5-7.5
ftlb.)
AfterSales
Service
Technical Information
•
•
•
•
158/21 ENU WMM2
4
Torque wrench, 6-50 Nm (4.5-37 ftlb.), e.g. V.A.G 1331A - Torque wrench, 6-50 Nm (4.5-37
ftlb.)
Torque wrench, 40-200 Nm (29.5- 147.5 ftlb.), e.g. VAG 1332 Torque wrench, 40-200 Nm
(29.5- 147.5 ftlb.)
9900 - PIWIS Tester 3
Battery charger with a current rating of at least 90 A, e.g. VAS 5908 - Battery charger 90A
Additional tools required when replacing the air-spring strut:
•
•
•
T10149 - Support
3424 - Spreader
VAS 6935 - Pole terminal puller
Additional tools required for calibrating driver assistance systems:
•
•
•
•
•
•
VAS 6430/1A - Adjustment device with reflector
VAS 6430/3 - ACC reflector mirror
VAS 6350/2A - Spacing laser
VAS 6350A - Calibration unit
VAS 6430/4 - Lane Departure Warning calibration board
VAS 6430/6 - Enhanced night vision calibration unit
Replacing upper right trailing arm on front axle
Work Procedure: 1
Remove right front wheel.  Workshop Manual '440519 Removing and installing wheel'
2
Only for vehicles with air suspension system:
Check air-spring strut for damage. If there are signs
of abrasion on the air suspension bellows near the
rear trailing arm  Damage to front right air-spring
strut, replace air-spring strut.  Workshop Manual
'433019 Removing and installing front air-spring
strut'
3
Replace upper trailing arm.  Workshop Manual
'401519 Removing and installing upper trailing arm '
4
Install right front wheel.  Workshop Manual
'440519 Removing and installing wheel'
Information
The camber on the front axle cannot be adjusted, but
must be centered evenly within the tolerance range by
moving the front-axle carrier.
AfterSales
Damage to front right air-spring strut
May 13, 2022
Page 3 of 11
4
Service
Technical Information
ENU 158/21
WMM2
If the camber on the front axle must be adjusted, first adjust the front-axle carrier and screw it to the body
using the old fastening screws and then replace all relevant fastening screws one after the other
with new screws.
5
Perform suspension alignment. Workshop Manual '449503 Performing front and rear
suspension alignment'
6
Enter the campaign in the Warranty and Maintenance booklet.
Warranty processing
Information
The working times specified below were determined specifically for carrying out this campaign and may
differ from the working times published in the PCSS Labor Operation List.
Scope 1 - 20:
Not relevant.
The campaign cannot be invoiced using this scope.
Scope 21:
Replacing upper right trailing arm on front axle
Relevant for
•
Cayenne (9YA/9YB) with steel chassis (M-no. 1BA, 1BH)
Labor time:
Replacing upper right trailing arm on front axle
Includes:
Raising and lowering the vehicle
Removing and installing front right wheel
Checking upper right trailing arm
Removing and installing cover for front underbody cover
Removing and installing front-axle support
Perform front suspension alignment
Adjusting vehicle at the front
Calibrating steering-angle sensor for PSM
Teaching power steering gear
Labor time: 273 TU
Parts required:
May 13, 2022
Page 4 of 11
958407510C
 Upper wishbone, rear right
– Front axle
1 ea.
PAF91221601
 Hexagon-head bolt, M10 x 85
– Wishbone to body
1 ea.
AfterSales
Service
Technical Information
158/21 ENU WMM2
PAF00072900
 Hexagon socket head bolt, M8 x 20
– Front underbody cover
3 ea.
PAF005372
 Cheese head bolt with multiple-tooth head
– Front-axle support to front-axle carrier:
2 ea.
PAF911511
 Hexagon-head bolt (combination)
– Front-axle support to front-axle carrier:
4 ea.
WHT002305
 Square nut
– Front-axle support to front-axle carrier:
4 ea.
PAF91184301
 Hexagon-head bolt, M12 x 1.5 x 90
– Front axle carrier on body, front
4 ea.
PAF91237901
 Hexagon-head bolt, M14 x 1.5 x 100
– Front axle carrier on body rear
4 ea.
N 91208802
 Cheese head bolt with multiple-tooth head
– Front-axle support to front-axle carrier:
3 ea.
4
Required materials (usually already available at the Porsche dealer):
00004330508
 Mounting paste (100 g/ 3.53 oz tube)
– Wheel centring surface to wheel hub
0.01 ea.
 Damage code WMM2 066 000 2
Scope 22:
Replacing upper trailing arm on front axle
Relevant for
•
Cayenne (9YA/9YB) with air suspension (M-no. 1BK)
Labor time:
Replacing upper right trailing arm on front axle
Includes:
Raising and lowering the vehicle
Removing and installing front right wheel
Checking upper right trailing arm
Removing and installing cover for front underbody cover
Removing and installing front-axle support
Perform front suspension alignment
Adjusting vehicle at the front
Calibrating steering-angle sensor for PSM
Teaching power steering gear
Labor time: 324 TU
Parts required:
AfterSales
May 13, 2022
Page 5 of 11
4
Service
Technical Information
ENU 158/21
WMM2
958407510C
 Upper wishbone, rear right
– Front axle
1 ea.
PAF91221601
 Hexagon-head bolt, M10 x 85
– Wishbone to body
1 ea.
PAF00072900
 Hexagon socket head bolt, M8 x 20
– Front underbody cover
3 ea.
PAF005372
 Cheese head bolt with multiple-tooth head
– Front-axle support to front-axle carrier:
2 ea.
PAF911511
 Hexagon-head bolt (combination)
– Front-axle support to front-axle carrier:
4 ea.
WHT002305
 Square nut
– Front-axle support to front-axle carrier:
4 ea.
PAF91184301
 Hexagon-head bolt, M12 x 1.5 x 90
– Front axle carrier on body front
4 ea.
PAF91237901
 Hexagon-head bolt, M14 x 1.5 x 100
– Front axle carrier on body rear
4 ea.
N 91208802
 Cheese head bolt with multiple-tooth head
– Front-axle support to front-axle carrier:
3 ea.
Required materials (usually already available at the Porsche dealer):
00004330508
 Mounting paste (100 g/ 3.53 oz tube)
– Wheel centring surface to wheel hub
0.01 ea.
 Damage code WMM2 066 000 2
Scope 23:
Replacing air suspension strut and upper right trailing arm on front axle.
Relevant for
•
Cayenne (9YA/9YB) with air suspension (M-no. 1BK)
Labor time:
Replacing air suspension strut and upper right trailing arm on front axle.
Includes:
Raising and lowering the vehicle
Removing and installing front right wheel
Checking upper right trailing arm
Removing and installing cover for front underbody cover
Removing and installing front-axle support
Perform front suspension alignment
Adjusting vehicle at the front
Calibrating steering-angle sensor for PSM
Teaching power steering gear
May 13, 2022
Page 6 of 11
AfterSales
Labor time: 510 TU
Service
Technical Information
158/21 ENU WMM2
4
Parts required:
958407510C
 Upper wishbone, rear right
– Front axle
1 ea.
PAF91221601
 Hexagon-head bolt, M10 x 85
– Wishbone to body
1 ea.
PAF00072900
 Hexagon socket head bolt, M8 x 20
– Front underbody cover
3 ea.
PAF005372
 Cheese head bolt with multiple-tooth head
– Front-axle support to front-axle carrier:
2 ea.
PAF911511
 Hexagon-head bolt (combination)
– Front-axle support to front-axle carrier:
4 ea.
WHT002305
 Square nut
– Front-axle support to front-axle carrier:
4 ea.
PAF91184301
 Hexagon-head bolt, M12 x 1.5 x 90
– Front axle carrier on body front
4 ea.
PAF91237901
 Hexagon-head bolt, M14 x 1.5 x 100
– Front axle carrier on body rear
4 ea.
9Y0616040C
 Air spring
– front right
1 ea.
PAF912603
 Hexagon-head bolt with washer M8 x 34
– Air spring to body
3 ea.
N 10106402
 Hexagon collar nut, self-locking, M12 x 1.5
– Spring strut to spring strut fork
1 ea.
N 10272202
 Hexagon-head bolt, M12 x 1.5 x 85
– Spring strut to lower trailing arm
1 ea.
N 10784702
 Hexagon-head bolt (combination), M12 x 1.5 x 95
– Spring strut to spring strut fork
1 ea.
PAF001987
 Hexagon nut, self-locking with washer, M12 x 1.5
– Spring strut to lower trailing arm
1 ea.
9A700837900
 Tie-wrap, A8.0 x 337
– Air guide
2 ea.
WHT007061
 12 point socket, M10 x 85
– Coupling rod to spring strut (conventional)
1 ea.
PAF102861
 Hexagon nut
– Coupling rod to spring strut (conventional)
1 ea.
AfterSales
May 13, 2022
Page 7 of 11
4
Service
Technical Information
ENU 158/21
WMM2
N 91208802
 Cheese head bolt with multiple-tooth head
– Front-axle support to front-axle carrier:
3 ea.
Required materials (usually already available at the Porsche dealer):
00004330508
 Mounting paste (100 g/ 3.53 oz tube)
– Wheel centring surface to wheel hub
0.01 ea.
 Damage code WMM2 066 000 2
Scope 24:
Replacing upper trailing arm on front axle
Relevant for
•
Cayenne (9YA/9YB) with air suspension (M-no. 1BK) and PDCC (M-no. 1P7)
Labor time:
Replacing upper right trailing arm on front axle
Includes:
Raising and lowering the vehicle
Removing and installing front right wheel
Checking upper right trailing arm
Removing and installing cover for front underbody cover
Removing and installing front-axle support
Perform front suspension alignment
Adjusting vehicle at the front
Calibrating steering-angle sensor for PSM
Teaching power steering gear
Calibrating control unit for distance measuring sensor
Calibrating front camera
Calibrating Night View Assist
Labor time: 393 TU
Parts required:
May 13, 2022
Page 8 of 11
958407510C
 Upper wishbone, rear right
– Front axle
1 ea.
PAF91221601
 Hexagon-head bolt, M10 x 85
– Wishbone to body
1 ea.
PAF00072900
 Hexagon socket head bolt, M8 x 20
– Front underbody cover
3 ea.
PAF005372
 Cheese head bolt with multiple-tooth head
– Front-axle support to front-axle carrier:
2 ea.
PAF911511
 Hexagon-head bolt (combination)
– Front-axle support to front-axle carrier:
4 ea.
AfterSales
Service
Technical Information
158/21 ENU WMM2
WHT002305
 Square nut
– Front-axle support to front-axle carrier:
4 ea.
PAF91184301
 Hexagon-head bolt, M12 x 1.5 x 90
– Front axle carrier on body front
4 ea.
PAF91237901
 Hexagon-head bolt, M14 x 1.5 x 100
– Front axle carrier on body rear
4 ea.
N 10662201
 Tie-wrap
– Mounting for electric wire harness (PDCC)
1 ea.
4
Required materials (usually already available at the Porsche dealer):
00004330508
 Mounting paste (100 g/ 3.53 oz tube)
– Wheel centring surface to wheel hub
0.01 ea.
 Damage code WMM2 066 000 2
Scope 25:
Replacing air suspension strut and upper right trailing arm on front axle.
Relevant for
•
Cayenne (9YA/9YB) with air suspension (M-no. 1BK) and PDCC (M-no. 1P7)
Labor time:
Replacing air suspension strut and upper right trailing arm on front axle.
Includes:
Raising and lowering the vehicle
Removing and installing front right wheel
Checking upper right trailing arm
Removing and installing cover for front underbody cover
Removing and installing front-axle support
Perform front suspension alignment
Adjusting vehicle at the front
Calibrating steering-angle sensor for PSM
Teaching power steering gear
Calibrating control unit for distance measuring sensor
Calibrating front camera
Calibrating Night View Assist
Labor time: 573 TU
Parts required:
958407510C
 Upper wishbone rear right
– Front axle
1 ea.
PAF91221601
 Hexagon-head bolt, M10 x 85
– Wishbone to body
1 ea.
AfterSales
May 13, 2022
Page 9 of 11
4
Service
WMM2
Technical Information
ENU 158/21
PAF00072900
 Hexagon socket head bolt, M8 x 20
– Front underbody cover
3 ea.
PAF005372
 Cheese head bolt with multiple-tooth head
– Front-axle support to front-axle carrier:
2 ea.
PAF911511
 Hexagon-head bolt (combination)
– Front-axle support to front-axle carrier:
4 ea.
WHT002305
 Square nut
– Front-axle support to front-axle carrier:
4 ea.
PAF91184301
 Hexagon-head bolt, M12 x 1.5 x 90
– Front axle carrier on body front
4 ea.
PAF91237901
 Hexagon-head bolt, M14 x 1.5 x 100
– Front axle carrier on body rear
4 ea.
9Y0616040C
 Air springs
– front right
1 ea.
PAF912603
 Hexagon-head bolt with washer M8 x 34
– Air spring to body
3 ea.
N 10106402
 Hexagon collar nut, self-locking, M12 x 1.5
– Spring strut to spring strut fork
1 ea.
N 10272202
 Hexagon-head bolt, M12 x 1.5 x 85
– Spring strut to lower trailing arm
1 ea.
N 10784702
 Hexagon-head bolt (combination), M12 x 1.5 x 95
– Spring strut to spring strut fork
1 ea.
PAF001987
 Hexagon nut, self-locking with washer, M12 x 1.5
– Spring strut to lower trailing arm
1 ea.
9A700837900
 Tie-wrap, A8.0 x 337
– Air guide
2 ea.
WHT007422
 12-point socket, M12 x 85
– Coupling rod to spring strut (PDCC)
1 ea.
PAF015081
 Hexagon nut
– Coupling rod to spring strut (PDCC)
1 ea.
N 10662201
 Tie-wrap
– Mounting for electric wire harness (PDCC)
1 ea.
Required materials (usually already available at the Porsche dealer):
00004330508
 Mounting paste (100 g/ 3.53 oz tube)
– Wheel centring surface to wheel hub
 Damage code WMM2 066 000 2
May 13, 2022
Page 10 of 11
AfterSales
0.01 ea.
Service
Technical Information
158/21 ENU WMM2
4
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.
© 2022 Porsche Cars North America, Inc.
AfterSales
May 13, 2022
Page 11 of 11