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Service bulletin 15781

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 id637473
Published by NHTSA2002-11-26
Manufacturer's number15781
Manufacturer's date2002-04-01
NHTSA componentENGINE AND ENGINE COOLING:COOLING SYSTEM

NHTSA's summary

CERTAIN 1998 THROUGH 2000 VEHICLES MAY EXHIBIT COOLANT LOSS OVER A LONG PERIOD OF TIME, WITH NO EVIDENCE OF EXTERNAL LEAKS. *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

Engine, Cooling system

Vehicles listed
FORD EXPLORER
FORD RANGER

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