NHTSA ID Number: 10174671
Manufacturer Communication Number: 122-B4J4T-05
TSB/Document Date: 2020-05-05
Summary
Porsche
intranet posting for Workshop Campaign WKF8.
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TSB/Document ID: 122-B4J4T-05
Replacement Service Bulletin Number:
MFR Communication Date: 2020-04-24
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: SERVICE BRAKES, HYDRAULIC
MFR Component System:
MFR Component Subsystem:
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WKF8 Workshop Campaign - Replacing PSCB brake p... | PPN Portal
WKF8 Workshop Campaign Replacing PSCB brake pads on front
axle and replacing brake pad retainer
springs on rear axle
Page 1 of 7
Version 1
Important Note:
Additional Information about the precondition of vehicles assigned to Scope 2 or Scope 3:
Scope 2: Due to a customer complaint, the brake pad retainer springs fitted on the rear axle were already
replaced by new springs (Part No. 9Y0698269A)
Scope 3: Due to a customer complaint, the PSCB brake pads fitted on the front axle were already replaced
by new brake pads (Part No. 9Y0698151AE)
If a different part number has been installed in advance due to a complaint, the vehicle must be assigned to
the corresponding scope. If the currently assigned scope is incorrect based on your findings in the workshop,
please report the VIN to
ryan.cooney@porsche.us
https://ppn.porsche.com/portal/docs/DOC-294713
5/4/2020
WKF8 Workshop Campaign - Replacing PSCB brake p... | PPN Portal
Page 2 of 7
WKF8 Workshop campaign - Replacing PSCB brake pads on
front axle and replacing brake pad retainer springs on rear axle
Overview
There is a possibility that road salt used during snow clearing and gritting can sometimes have a negative
effect on the friction coefficient of PSCB brake pads containing copper. This may result in a delayed braking
response.
To prevent this, the PSCB brake pads on the front axle of the affected vehicles must be replaced with copper-
free brake pads. The brake pad retainer springs on the rear axle must also be replaced to prevent brake noises
("squealing") at low speeds.
Please arrange for this measure to be carried out on the affected vehicles the next time the vehicles come into
the workshop.
Model type
Cayenne (9YA/9YB)
Model year
2018 to 2020
Vehicle specifications
Porsche Surface Coated Brake (PSCB)
Number
1,191
General information on the remedial action
Please note that the PSCB brake pads on the front axle or the brake pad retainer springs on the rear axle have
already been replaced on some of the vehicles affected by the campaign due to a customer complaint.
For this reason, specific campaign scopes have been defined and each vehicle has been clearly assigned just
one campaign scope.
To find out which scope is assigned to the vehicle, see PCSS Vehicle Information.
Situation
Scope 1:
No customer complaint.
Action required
• Replacing PSCB brake pads
on front axle
https://ppn.porsche.com/portal/docs/DOC-294713
5/4/2020
WKF8 Workshop Campaign - Replacing PSCB brake p... | PPN Portal
Situation
Page 3 of 7
Action required
• Replacing brake pad retainer
springs on rear axle
Scope 2:
Due to a customer complaint, the
brake pad retainer springs fitted
• Replacing PSCB brake pads
on front axle
Due to a customer complaint, the
PSCB brake pads fitted on the
• Replacing brake pad retainer
springs on rear axle
on the rear axle were already
replaced by new springs.
Scope 3:
front axle were already replaced
by new brake pads.
Porsche Mobility
If requested, the mobility of the affected customer can be guaranteed by offering a suitable replacement
vehicle.
Please invoice this additional service with the campaign scope via WWS.
Parts required
The part numbers of the parts required for the respective vehicle are specified in the relevant assigned scope.
To find out which parts are required, depending on the assigned campaign scopes, see 'Warranty processing'
in the Technical Information.
Part No.
Designation
Quantity/vehicle
Parts return*
00004330454
Brake pads for disc
1 set
No
2 ea.
No
- Front axle
00004330457
wear indicator)
- Front axle
https://ppn.porsche.com/portal/docs/DOC-294713
5/4/2020
WKF8 Workshop Campaign - Replacing PSCB brake p... | PPN Portal
Part No.
Designation
Quantity/vehicle
Parts return*
WHT004572
Collared cheese head
4 ea.
No
Retainer spring
- Brake pads to brake
2 ea.
No
Internal serration screw,
4 ea.
No
2 ea.
No
Retainer spring
- Brake pads to brake
2 ea.
No
bolt with hexagon
socket head, M14 x 1.5
Page 4 of 7
x 135
- Brake caliper to wheel
bearing housing (front
axle)
00004330455
caliper (rear axle)
N 91183701
M12 x 1.5 x 115
- Brake caliper to wheel
bearing housing (rear
axle)
00004330456
971698231A
wear indicator)
- Rear axle
caliper (front axle)
* The parts must be stored until such a time as the related warranty or campaign claim has been credited in
WWS. If a barcode is generated with the credit note, the affected part must be sent to Porsche AG as usual. If
no barcode is generated with the credit note, the part can go directly into the genuine remanufactured parts
process or be scrapped.
Parts Ordering
Parts can be ordered as needed, without the need for a PRMS ticket or email. Please ensure the correct parts
are ordered, based on the campaign scope assigned, and the respective parts list within the technical
information bulletin.
https://ppn.porsche.com/portal/docs/DOC-294713
5/4/2020
WKF8 Workshop Campaign - Replacing PSCB brake p... | PPN Portal
Page 5 of 7
Warranty processing
Please enter the campaign that was carried out in the Warranty and Maintenance booklet for the vehicle.
Please note that the PSCB brake pads on the front axle or the brake pad retainer springs on the rear axle have
already been replaced on some of the vehicles assigned to the campaign due to a customer complaint.
Specific campaign scopes have been defined for this reason. Every vehicle is clearly assigned just one
campaign scope.
To find out which scope is assigned to the vehicle, see PCSS Vehicle Information.
Scope 1: Replacing PSCB brake pads on front axle and replacing brake pad retainer
springs on rear axle
Damage code
WKF8 66 000
Repair code
2
Working time
179 TU
Scope 2: Replacing PSCB brake pads on front axle
Damage code
WKF8 66 000
Repair code
2
Working time
115 TU
Scope 3: Replacing brake pad retainer springs on rear axle
Damage code
WKF8 66 000
Repair code
2
Working time
104 TU
Further information
Work instruction
TI No. 28/20, Group 4, Service, WKF8
Vehicle list and allocation
See PCSS or attached VIN list for reference
Technical Information
See PCSS or attached TI for reference
https://ppn.porsche.com/portal/docs/DOC-294713
5/4/2020
WKF8 Workshop Campaign - Replacing PSCB brake p... | PPN Portal
Page 6 of 7
9YA 4 28-20 WKF8 - Replacing PSCB Brake Pads
on Front Axle and Replacing Brake Pad Retainer
Springs on Rear Axle (Workshop campaign).pdf
75.3 KB
(99 views)
WKF8 VIN List.xlsx
36.4 KB
(75 views)
Created by Ryan Cooney on Apr 24, 2020 12:08 AM. Last modified by Ryan Cooney on Apr
24, 2020 9:19 PM.
Categories: Workshop Campaigns, Cayenne
Tags : cayenne, brakes, 9ya, pscb, 9yb, wkf8
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