# Service bulletin 4650

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 635586
- Published by NHTSA: 2002\-10\-25
- Manufacturer's number: 4650
- Manufacturer's date: 2002\-07\-22
- NHTSA component: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC

## NHTSA's summary

CONCERNS WITH CORROSION ON THE BRAKE DISCS. \*TT

## The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

## Components

Brakes

## Vehicles listed

- 1999 PORSCHE 911 CARRERA

## Other bulletins for the same vehicles and component

- [No. 2403](/bulletins/10252562.md), 2024-04-03, Service bulletin: SERVICE BRAKES, HYDRAULIC. Special tools and equipment information for brake caliper pins for the 911, Boxster, and Cayman
- [No. 1801.4](/bulletins/10209901.md), 2022-04-05, Service bulletin: SERVICE BRAKES. Advanced technical information for a brake squeal.
- [ATIALL41605](/bulletins/10198525.md), 2021-06-28, Service bulletin: EQUIPMENT; SERVICE BRAKES. Understanding and addressing brake squeal complaints.
- [122\-S6Q2R\-06](/bulletins/10188291.md), 2021-03-06, Service bulletin: EQUIPMENT; SERVICE BRAKES. Resubmitting at request of Mr. Bernard Hardgrave. Advanced technical information on brake fluid for all Porsche vehicles.
- [4470](/bulletins/635612.md), 2002-10-29, Service bulletin: SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM. BRAKE BOSTER SEALT REPLACEMENT AT THE FIREWALL. CORRECTIONS. \*TT
- [1101](/bulletins/632413.md), 2002-07-15, Service bulletin: SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM. TECHNICAL INFORMATION REGARDING BRAKE BOOSTER SEAL AT THE FIREWALL WHICH HAS CHANGED. \*TT
- [4605](/bulletins/609900.md), 2000-04-11, Service bulletin: SERVICE BRAKES, HYDRAULIC:POWER ASSIST. SQUEAKING OR CLICKING NOISES CAN OCCURE WHEN THE BRAKE OR CLUTCH PEDALS ARE OPERATED. YD
- [2454](/bulletins/609790.md), 2000-04-10, Service bulletin: SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM:HOSES, LINES/PIPING, AND FITTINGS. RECOMMENDED PROCEDURES WHEN WORKING WITH VACUUM LINES AND HOSES. YD

JSON: [/v1/bulletins/635586](/v1/bulletins/635586)

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