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Service bulletin 20604

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 id621822
Published by NHTSA2001-10-02
Manufacturer's number20604
Manufacturer's date2001-06-01
NHTSA componentSERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC

NHTSA's summary

BRAKE VIBRATION OR JUDDER. *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
JAGUAR XJ1998
JAGUAR XK1997

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