No. 92-23-1

Service
Technical Information
92/23
ENU
WPH8
4
WPH8 - Replacing Power-Steering Gear (Workshop Campaign)
Important:
CRITICAL WARNING -This campaign includes steps where control unit(s) in the vehicle will be
programmed with the PIWIS Tester. The vehicle voltage must be maintained between 13.5 volts and 14.5
volts during this programming. Failure to maintain this voltage could result in damaged control unit(s).
Damage caused by inadequate voltage during programming is not a warrantable defect. The technician
must verify the actual vehicle voltage in the PIWIS Tester before starting the campaign and also document
the actual voltage on the repair order.
Model Year:
As of 2022 up to 2023
Model Line:
Panamera (971)
Concerns:
Power steering gear
Cause:
There is a possibility that a power steering gear installed on the affected vehicles does not
meet the required specifications.
This can lead to noise and a change in the feel during steering.
Action:
Replace power steering gear.
Affected
Vehicles:
Only vehicles assigned to the campaign (see also PCSS Vehicle Information).
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Technical Information
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Installation
Position:
Installation position for power steering gear
Required parts and materials
Parts Info:
Part No.
Designation
– Location
Number
Vehicles without rear axle steering (M no. 0N1)
971423051EM
 Power-steering gear with tie rods
1 piece
or
Vehicles with rear axle steering incl. Power steering Plus (M no. 0N5):
971423051EN
 Power-steering gear with tie rods
1 piece
Additionally required parts:
9A700499500
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 Hexagon collar nut, M12 x 1.5
– Tie-rod ball
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2 pieces
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Technical Information
92/23
ENU
WPH8
WHT004955A
 Hex socket head screw
– Steering column universal joint for at the power
steering gear
1 piece
N 10784702
 Hexagon flange bolt, M12 x 1.5 x 85
– Power steering gear on front axle carrier
2 pieces
PAF104029
 Hexagon collar nut, M12 x 1.5
– Power steering gear on front axle carrier
2 pieces
N 91259801
 Round head screw, M8 x 20
Mounting anti-roll bar to front axle carrier
2 pieces
N 10609207
 Hexagon collar nut, M8
Mounting anti-roll bar to front axle carrier
2 pieces
N 91244301
 Hexagon-head bolt with hexagon socket head
(Duo) M12 x 1.5 x 90
– Mounting anti-roll bar to body
6 pieces
N 91260401
 Hexagon-head bolt with hexagon socket head
(Duo), M10 x 45
Mounting anti-roll bar to front axle carrier
8 pieces
PAF108648
 Hexagonal fit bolt with flange M8 x 80
- Power steering gear on anti-roll bar mounting
1 piece
N 10435506
 Hexagon collar nut, self-locking M8
- Power steering gear on anti-roll bar mounting
1 piece
N 10714101
 Hexagon flange bolt, M10 x 25
– Strut on body
2 pieces
N 91006202
 Hexagonal bolt (combination) M10 x 35
– Anti-roll bar on anti-roll bar mounting
4 pieces
N 0150818
 Hexagon collar nut, M12 x 1.5
– Connecting link to anti-roll bar
2 pieces
N 10793603
 Hexagon-head bolt, M12 x 1.5 x 60
– Connecting link to anti-roll bar
2 pieces
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Material:
ENU
Technical Information
92/23
Required materials (usually already available in the Porsche Center):
Part No.
Designation
– Location
Quantity
00004330508
 Optimoly TA (aluminium paste)
– Wheel centring surfaces on the wheel hub
0.02 pieces
Required tools
Tools:
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Threaded bolts for installing wheel
Assembly wedge
Plastic-coated assembly lever
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.)
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 (30–148 ftlb.), e.g. V.A.G 1332A - Torque wrench 40–200 Nm
(30–148 ftlb.)
Battery charger with a current rating of at least 90 A, e.g. VAS 5908 - battery charger 90 A
P90999 - PIWIS Tester 4
P90009 - Puller
VAS 6883A - Insulated tool set
VAS 6931 - Transmission and gearbox jack
VAS 6918 - Quick-clamping unit
VAS 6826 - Steering wheel balance
VAS 6430/4 - Lane Keep Assist calibration board
VAS 6350A - Calibration unit
T40262 - Locking cap
VAS 6410 - Contact surface cleaning set
VAS 6558/9-6A - High-voltage test adapter
VAS 6558A - High-voltage testing module
9229/1 - Puller hook
T10188 - Insertion tool
T10187 - Press-out tool
WE 1383 - Hybrid warning signs
Wheel center mounting VAS 6350
Additionally required tools for vehicles with Night View Assist (M no. 9R1)
•
•
•
VAS 6430/1A - Adjustment device with reflector
VAS 6430/3 - Mirror for adjustment device
VAS 6430/6 - Night View Assist calibration unit
Additionally required tools for vehicles with adaptive cruise control ACC (M no. 3V1)
•
•
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VAS 6430/1A - Adjustment device with reflector
VAS 6430/3 - Mirror for adjustment device
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Technical Information
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Additionally required tools for vehicles with Park Assistance systems incl. Surround View
(M no. 8A4)
VAS 721 001 - Calibration System
•
Replacing power steering gear
Work Procedure: 1
Remove power steering gear and install new power steering gear.  Workshop Manual '489019
Removing and installing power steering gear'
2
Code new power steering gear using P90999 - PIWIS Tester 4.  Workshop Manual '489055
Replacing power steering gear'
3
Teach new power steering gear.  Workshop Manual '489025 Teaching power steering gear'
4
Enter the campaign in the Warranty and Maintenance logbook.
Warranty processing
Information
The specified labor times were determined specifically for carrying out this campaign and include
all necessary preliminary and subsequent rework. The labor times may differ from the Labor times
published in the Labor Operation List in PCSS.
Scope 1:
Replacing power steering gear
Relevant for Panamera (971) with the following equipment:
•
•
Adaptive air suspension (M no. 1BK)
without Adaptive cruise control ACC (M no. 3V1)
Labor time:
Includes:
Removing and installing power steering gear
Removing and installing mounting anti-roll bar
Performing suspension alignment of the vehicle
Connecting and disconnecting battery charger
Connecting and disconnecting PIWIS Tester
Coding and teaching power steering gear
Reading out and erasing fault memories
Labor time: 526 TU
Required parts:
Vehicles without rear axle steering (M no. 0N1)
971423051EM
Power-steering gear with tie rods
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1 piece
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or
Vehicles with rear axle steering (M no. 0N5)
971423051EN
Power-steering gear with tie rods
1 piece
Additionally required parts:
9A700499500
Hexagon collar nut, M12 x 1.5
2 pieces
WHT004955A
Hex socket head screw
1 piece
N 10784702
Hexagon flange bolt, M12 x 1.5 x 85
2 pieces
PAF104029
Hexagon collar nut, M12 x 1.5
2 pieces
N 91259801
Round head screw, M8 x 20
2 pieces
N 10609207
Hexagon collar nut, M8
2 pieces
N 91244301
Hexagon-head bolt with hexagon socket head (Duo) M12 x 1.5 x
90
6 pieces
N 91260401
Hexagon-head bolt with hexagon socket head (Duo), M10 x 45
8 pieces
PAF108648
Hexagonal fit bolt with flange M8 x 80
1 piece
N 10435506
Hexagon collar nut, self-locking M8
1 piece
N 10714101
Hexagon flange bolt, M10 x 25
2 pieces
N 91006202
Hexagonal bolt (combination), M10 x 35
4 pieces
N 0150818
Hexagon collar nut, M12 x 1.5
2 pieces
N 10793603
Hexagon-head bolt, M12 x 1.5 x 60
2 pieces
Required materials (usually already available in the Porsche Center):
00004330508
Optimoly TA (aluminium paste)
 Damage number WPH8 0000 2
Scope 2:
Replacing power steering gear
Relevant for Panamera (971) with the following equipment:
•
•
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Adaptive air suspension (M no. 1BK)
Adaptive cruise control (M-no. 3V1)
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0.02 pieces
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Technical Information
92/23
ENU
WPH8
4
Labor time:
Includes:
Removing and installing power steering gear
Removing and installing mounting anti-roll bar
Performing suspension alignment of the vehicle
Connecting and disconnecting battery charger
Connecting and disconnecting PIWIS Tester
Adjusting distance measuring sensor control unit
Coding and teaching power steering gear
Reading out and erasing fault memories
Labor time: 582 TU
Required parts:
Vehicles without rear axle steering (M no. 0N1)
971423051EM
Power-steering gear with tie rods
1 piece
or
Vehicles with rear axle steering (M no. 0N5)
971423051EN
Power-steering gear with tie rods
1 piece
Additionally required parts:
9A700499500
Hexagon collar nut, M12 x 1.5
2 pieces
WHT004955A
Hex socket head screw
1 piece
N 10784702
Hexagon flange bolt, M12 x 1.5 x 85
2 pieces
PAF104029
Hexagon collar nut, M12 x 1.5
2 pieces
N 91259801
Round head screw, M8 x 20
2 pieces
N 10609207
Hexagon collar nut, M8
2 pieces
N 91244301
Hexagon-head bolt with hexagon socket head (Duo) M12 x 1.5 x
90
6 pieces
N 91260401
Hexagon-head bolt with hexagon socket head (Duo), M10 x 45
8 pieces
PAF108648
Hexagonal fit bolt with flange M8 x 80
1 piece
N 10435506
Hexagon collar nut, self-locking M8
1 piece
N 10714101
Hexagon flange bolt, M10 x 25
2 pieces
N 91006202
Hexagonal bolt (combination), M10 x 35
4 pieces
N 0150818
Hexagon collar nut, M12 x 1.5
2 pieces
N 10793603
Hexagon-head bolt, M12 x 1.5 x 60
2 pieces
Required materials (usually already available in the Porsche Center):
00004330508
Optimoly TA (aluminium paste)
0.02 pieces
 Damage number WPH8 0000 2
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Technical Information
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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.
© 2023 Porsche Cars North America, Inc.
Sep 19, 2023
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