No. 150-23

Symptom-based workshop manual
Service
150/23 ENU
4651
4
Brake Symptom - Intermittent Brake Squeaking: Optional Comfort Brake Pads Available
(SY 150/23)
Vehicle Type:
911 GT3 RS (991)
Model Year:
2019
Equipment:
Ceramic - PCCB brake (M-No. 450)
Concerns:
Brake pads at front and rear
Symptom:
During driving or braking, brake squeaking occurs intermittently from the area of the front
axle and/or rear axle. No damage is detected when inspecting the brake.
Cause:
The high-performance brake pads installed in series can cause noise abnormalities (e.g., squeaking) due
to their performance properties.
Information
This behavior is not a functional defect in the brake system or brake components.
Remedial
Action:
In the event of a complaint, the customer can be offered the option of retrofitting with comfort brake pads
on the front and rear axles.
These brake pads offer better acoustic properties with almost the same performance.
Replacing brake pads, front and rear:
 Workshop Manual '463656 Replacing front disc brake pads'
 Workshop Manual '463856 Replacing brake pads rear'
Information
The brake pads must always be retrofitted on both axles. The individual retrofitting or mixed installation
on front and rear axles is not permitted.
Required parts and tools
Parts Info:
Part No.
Designation
– Location of use
Number
9GT698151Q
 1 set of brake pads for disc brakes
– Front axle
1 piece
and
AfterSales
Dec 20, 2023
Page 1 of 3
4
Service
ENU 150/23
4651
Tools:
•
•
•
•
•
•
•
•
Warranty:
Dec 20, 2023
Page 2 of 3
Symptom-based workshop manual
9GT698451M
 1 set of brake pads for disc brakes
– Rear axle
1 piece
WHT008186
 Cheese head bolt, M12 x 1.5 x 62
– Brake calliper to front wheel carrier
4 pieces
9A700758500
 Cheese head bolt, M12 x 1.5 x 85
– Brake calliper to rear wheel carrier
4 pieces
9GT907637
 Sender wire (brake pad wear indicator)
– Front axle
2 pieces
99160918500
 Sender wire (brake pad wear indicator)
– Rear axle
2 pieces
9P1615133A
 Brake pad wear indicator cable holder
– Front axle
2 pieces
7L5907323A
 Clip for sender wire (brake pad wear indicator)
– Rear axle
2 pieces
97035195901
 Spring repair kit
– Front axle
2 pieces
971698995B
 Spring repair kit for spring
– Rear axle
2 pieces
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, 20-100 Nm (15-74 ftlb.), e.g., VAS 5820 - Torque wrench, 20-100 Nm (15-74
ftlb.)
Torque wrench, 15-800 Nm (111-592 ftlb.), e.g., V.A.G 1601 - Torque wrench, 15-800 Nm
(111-592 ftlb.)
T10145 - Piston reset tool
9451 - Socket wrench
9794 - Assembly aid
9796 - Socket wrench
VAS 6266A - Wheel fitting trolley
As there is no functional defect, the retro-fitting of comfort pads as described in this SY is excluded from
Warranty and Goodwill.
AfterSales
Service
Symptom-based workshop manual
150/23 ENU
4651
4
Labor position and PCSS encryption
Labor position:
I No.
APOS
Labor operation
44052016
Removing and mounting 4 wheels
46365650
Replacing 4 front disc brake pads
46385650
Replacing 4 rear disc brake pads
PCSS encryption:
Location (FES5)
46510
PCCB front brake disc
Damage type (SA4)
2019
squeaks
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.
AfterSales
Dec 20, 2023
Page 3 of 3