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Service bulletin 996777

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 id608466
Published by NHTSA1999-12-02
Manufacturer's number996777
Manufacturer's date1999-08-01
NHTSA componentSTEERING:HYDRAULIC POWER ASSIST:POWER STEERING FLUID

NHTSA's summary

EXHIBITING A POWER STEERING FLUID LEAK FROM THE STEERING GEAR BOOT(S). *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

Steering, Power steering

Vehicles listed
FORD EXPLORER1997, 1998, 1999, 2000
MERCURY MOUNTAINEER1997, 1998, 1999, 2000

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
125102000-11-14. Service bulletin. SOME VEHICLES MAY EXHIBIT A POWER STEERING GRUNT / GROAN / NOISE WHILE TURNING. *TT
134402000-05-16. Service bulletin. EXPERIENCING VERY LIGHT STEERING VIBRATION / SHIMMY / NIBBLE AT ENGINE IDLE OR LOW SPEEDS (PARKING LOT TYPE MANEUVERS). *TT
992112000-02-11. Service bulletin. EXHIBITING A GRUNTING NOISE HEARD FROM THE POWER STEERING SYSTEM DURING SLOW SPEED TURNING, OR WHILE STATIONARY WHEN TURNING TO THE LEFT OR COMING OFF THE STEERING STOPS. *TT
98-34231999-10-07. Service bulletin. EXHIBITING A POWER STEERING NOISE. *TT
9960881999-09-08. Service bulletin. EXPERIENCING A GRUNT NOISE WHILE TURNING. *TT
58121999-06-04. Service bulletin. CONCERNS WITH POWER STEERING MAKING A GRUNTING / GROANING NOISE WHILE TURNING. *TT