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Service bulletin 122-M4M4S-04

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10173059
Published by NHTSA2020-04-02
Manufacturer's number122-M4M4S-04
Manufacturer's date2020-03-26
NHTSA componentSERVICE BRAKES, HYDRAULIC

NHTSA's summary

Instructions for re-programming the PSM control unit in the event of a brake system fault.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Brakes

Vehicles listed
PORSCHE MACAN2019, 2020

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
No. D7522026-02-05. Service bulletin. 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. D7492025-12-05. Service bulletin. Parts information for parts withdrawal involving the brake disc 9Y0615301AJ
D7192025-06-02. Service bulletin. Parts information for Parts Withdrawal - 1 Set of Brake Pads for Disk Brake. Vehicles included are all cars that use part number 992698451R
No. D6892024-08-06. Service bulletin. Parts information for parts withdrawal involving the brake hose 9J1611707F and 9J1611708F
No. D6842024-07-02. Service bulletin. Parts information for parts withdrawal involving the retainer for brake hose/brake line
No. D6812024-06-05. Service bulletin. Parts information for parts withdrawal involving the retainer for brake hose/pressure difference sender. (9J1611845C, 9J1611846C, PAB906051C)
No. D6772024-05-02. Service bulletin. Parts information for parts withdrawal involving the brake pads - 992698151F
No. 122-202023-04-06. Service bulletin. Technical information on a complaint - brake noise
No. 32-222022-08-05. Service bulletin. Symptom based workshop manual for squeaking noises from around the rear axle.
No. 1801.42022-04-05. Service bulletin. Advanced technical information for a brake squeal.