# Service bulletin No. 51\-21

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: 10199883
- Published by NHTSA: 2021\-08\-04
- Manufacturer's number: No. 51\-21
- Manufacturer's date: 2021\-07\-30
- NHTSA component: SERVICE BRAKES, HYDRAULIC

## NHTSA's summary

Porsche service campaign information for Workshop Campaign WMC3 \- Replacing Hydraulic Unit.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10199883-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10199883-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Brakes

## Vehicles listed

- 2020 to 2021 PORSCHE MACAN

## Other bulletins for the same vehicles and component

- [No. D752](/bulletins/11028352.md), 2026-02-05, Service bulletin: SERVICE BRAKES. Parts information for parts withdrawal involving the caliper without brake pads. The part numbers affected are in the attached PDF. The vehicles associated are cars that use the part numbers in the PDF.
- [No. D749](/bulletins/11026376.md), 2025-12-05, Service bulletin: SERVICE BRAKES. Parts information for parts withdrawal involving the brake disc 9Y0615301AJ
- [D719](/bulletins/11018757.md), 2025-06-02, Service bulletin: SERVICE BRAKES. Parts information for Parts Withdrawal \- 1 Set of Brake Pads for Disk Brake. Vehicles included are all cars that use part number 992698451R
- [No. D689](/bulletins/11005786.md), 2024-08-06, Service bulletin: SERVICE BRAKES. Parts information for parts withdrawal involving the brake hose 9J1611707F and 9J1611708F
- [No. D684](/bulletins/11002860.md), 2024-07-02, Service bulletin: SERVICE BRAKES. Parts information for parts withdrawal involving the retainer for brake hose/brake line
- [No. D681](/bulletins/11001069.md), 2024-06-05, Service bulletin: SERVICE BRAKES. Parts information for parts withdrawal involving the retainer for brake hose/pressure difference sender. \(9J1611845C, 9J1611846C, PAB906051C\)
- [No. D677](/bulletins/10254030.md), 2024-05-02, Service bulletin: SERVICE BRAKES, HYDRAULIC. Parts information for parts withdrawal involving the brake pads \- 992698151F
- [No. 122\-20](/bulletins/10233885.md), 2023-04-06, Service bulletin: SERVICE BRAKES, HYDRAULIC. Technical information on a complaint \- brake noise
- [No. 32\-22](/bulletins/10217225.md), 2022-08-05, Service bulletin: SERVICE BRAKES, HYDRAULIC. Symptom based workshop manual for squeaking noises from around the rear axle.
- [No. 1801.4](/bulletins/10209901.md), 2022-04-05, Service bulletin: SERVICE BRAKES. Advanced technical information for a brake squeal.

JSON: [/v1/bulletins/10199883](/v1/bulletins/10199883)

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