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Service bulletin 8579

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 id613686
Published by NHTSA2000-08-07
Manufacturer's number8579
Manufacturer's date2000-04-01
NHTSA componentSERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS

NHTSA's summary

SOME 4X4 VEHICLES MAY EXHIBIT A REPETITIVE THUMP / KNOCK NOISE FROM THE LEFT FRONT WHICH IS PROPORTIONAL TO WHEEL SPEED WHEN BRAKING. *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
FORD EXPLORER SPORT2001 (the catalog's model; the bulletin names a series or trim of it)
FORD EXPLORER SPORT TRAC2001

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
164372004-07-28. Service bulletin. DIAGNOSTIC TROUBLE CODE (DTC) C1233 & C1234 - REPLACE ANTI-LOCK BRAKE SYSTEM EUC. *MJ
164022004-07-28. Service bulletin. FRONT BRAKE WEAR - UNDER INVESTIGATION. *MJ
172312003-11-18. Service bulletin. ANTI-LOCK BRAKE SYSTEM (ABS) LIGHT FLASHING WITH DIAGNOSTIC TROUBLE CODE (DTC) B2477 AFTER REPLACEMENT OF THE ABS MODULE. *TT
159102002-12-06. Service bulletin. CONCERNS WITH BRAKE VIBRATION, ROUGHNESS AND / OR GRINDING NOISE, AND EXCESSIVE BRAKE ROTOR CORROSION. *TT
158592002-12-04. Service bulletin. SOME VEHICLES WITH 4WABS MAY EXHIBIT DIAGNOSTIC TROUBLE CODES C1233 AND C1234 (ANTI-LOCK BRAKE SENSOR OUTPUT FAILURE). *TT
158132002-12-02. Service bulletin. SOME VEHICLES EQUIPPED WITH 4WABS MAY EXHIBIT DIAGNOSTIC TROUBLE CODES C1233 AND C1234 (ANTI-LOCK BRAKE SENSOR OUTPUT FAILURE). *TT
160212002-11-06. Service bulletin. SOME VEHICLES WITH 4WABS MAY EXHIBIT DIAGNOSTIC TROUBLE CODES C1233 AND C1234 (ANTI-LOCK BRAKE SENSOR OUTPUT FAILURES) IN SLIPPERY CONDITIONS. *TT
161212002-11-05. Service bulletin. SOME VEHICLES MAY EXHIBIT UNEVEN AND / OR PREMATURE FRONT BRAKE PAD WEAR, PARTICULARLY THE FRONT INSIDE PAD. *TT
152492001-12-03. Service bulletin. CONCERNS WITH HIGH BRAKE PEDAL FORCE TO STOP AFTER ROTOR MACHINING. *TT
150222001-10-23. Service bulletin. CONCERNS THAT THE ANTI-LOCK BRAKE SYSTEM (ABS) LAMP IS ON WITH DIAGNOSTIC TROUBLE CODES C1230, C1229, OR C1237. *TT