Service bulletin No. 77-26

Manufacturer communication, from NHTSA Manufacturer Communications

Published by NHTSA: Sep 4, 2026
Manufacturer: PORSCHE
NHTSA ID: 11036854
NHTSA category: Service Bulletin/Repair Instructions
Applies to, as stated by NHTSA: PORSCHE CAYENNE 2024-2026; PORSCHE CAYENNE COUPE 2024-2026; PORSCHE CAYENNE E-HYBRID 2024-2026; PORSCHE CAYENNE E-HYBRID COUPE 2024-2026; PORSCHE CAYENNE GTS 2024-2026; PORSCHE CAYENNE GTS COUPE 2024-2026; PORSCHE CAYENNE S 2024; PORSCHE CAYENNE S COUPE 2024-2026; PORSCHE CAYENNE TURBO E-HYBRID 2024-2026; PORSCHE CAYENNE TURBO E-HYBRID COUPE 2024-2026; PORSCHE CAYENNE TURBO GT 2024; PORSCHE CAYENNE TURBO GT COUPE 2025
Component, as stated by NHTSA: SERVICE BRAKES

Text of the manufacturer communication

Technical Information for "Squealing” Brake Noises on the Front Brake During Braking. Also includes model year 2027 Cayenne (9YA/9YB).

Manufacturer document number: No. 77-26
Date of the communication: 2026-08-27

View original source on NHTSA.gov

NHTSA reuses some ID numbers across record types. If its page lists more than one record, this one is the manufacturer communication dated Sep 4, 2026.

For the 2022 Porsche 911

Carrera S (992)

Ignored

Relevance of 3% is under one half, so the notice is ignored whatever the other figures say.

Vehicle relevance: 3%
Attention: 11%
Interrupt probability: 8%

Importance to this owner: 0.1 of 4, none
Vehicle area the notice is about: Brakes

This manufacturer communication does not appear to warrant attention for this vehicle.

Decided by jev-1.13.0 in 161 ms from 1,812 input tokens. Jev returns these figures and nothing else. It gives no reasons, and none are written for it here. The figures describe how relevant the notice is, not the condition of any vehicle.

Checked by code against NHTSA's fields

A plain comparison with the structured fields NHTSA filled in. Separate from Jev's decision.

YesNHTSA names this make
NoNHTSA names this model
n/aNHTSA lists model year 2022 for this model

The same notice, every vehicle

Relevance	Attention	Interrupt	State
3%	11%	8%	Ignored
2%	6%	6%	Ignored
1%	4%	5%	Ignored
1%	4%	5%	Ignored
1%	4%	5%	Ignored
1%	5%	5%	Ignored
1%	4%	5%	Ignored
1%	5%	5%	Ignored
1%	4%	4%	Ignored
1%	4%	5%	Ignored
1%	4%	5%	Ignored
1%	4%	4%	Ignored
1%	4%	4%	Ignored
1%	4%	5%	Ignored
1%	3%	4%	Ignored
1%	5%	5%	Ignored

Select a vehicle to see its attention and interrupt figures above.