122-R8W4S-08

Service
Technical Information
169/18 ENU
4641
4
Noise Symptom - Rear Axle Brake Excessive Noise (I-no. 2EQ/2ES): Replacing brake pad
retainer springs (SY 169/18)
Model Line:
Cayenne (9YA)
Model Year:
As of 2018 up to 2019
Equipment:
•
•
Rear disc brakes, disc diameter: 20 inches, brake caliper painted white (PSCB) (I-no.
2EQ)
Rear disc brakes, disc diameter: 20 inches, brake caliper painted green (PSCB) (I-no.
2ES)
Subject:
Rear brake pad retainer springs
Symptom:
•
•
Cause:
A squealing noise can be heard during braking (this noise tends to occur shortly before stopping and
when the brake pedal is pressed lightly).
A noise can also occur after driving off at low speeds.
The high-performance brake system is designed to achieve the best possible braking effect at all speeds
and temperatures.
•
Noises can occur under certain conditions, depending on various factors.
These noises are normal and generally not an indication of a malfunction.
While some brake system noise is normal in a high performance brake system, excessive noise may be
an indication of an insufficient preload on the brake pad retainer springs.
> Normal brake noises, such as squeal, occur under a narrow set of operating condition. An example
would be low speed, light brake pedal application.
> Abnormal brake noises occur under wider operating conditions. An example would be during light or
heavy braking at any speed or temperature
Remedial
Action:
If you confirm excessive noise, replace the existing brake pad retainer springs with new springs with a
higher preload, see  Workshop Manual '463856 Replacing rear disc brake pads'.
Information
The following points must be observed in relation to the part numbers listed below and the
relevant vehicle (depending on equipment):
•
Part number indexes will increase over time. Before performing repairs, cross reference with
PET (Porsche Spare Parts Catalog), for newer parts (higher index).
•
PET must be checked to determine if additional components are needed.
•
Particular/modified components, whose part numbers are listed accordingly, are required for
the remedial action.
AfterSales
Jul 1, 2019
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4
Service
4641
ENU
Technical Information
169/18
Parts Info:
9Y0.698.269 A
Invoicing:
The work involved is invoiced under the labor operation:
 Spring (2 required per vehicle)
APOS
Labor operation
46385600
Replacing rear disc brake pads
I No.
For invoicing and documentation using PQIS, enter the following coding:
Location (FES5)
46410
Expanding spring
Damage type (SA4)
1813
Preload reduced
References:
 Workshop Manual '463856 Replacing rear disc brake pads'
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.
© 2019 Porsche Cars North America, Inc.
Jul 1, 2019
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