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Service bulletin ASI-20589

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 id10029167
Published by NHTSA2009-06-22
Manufacturer's numberASI-20589
Manufacturer's date2008-12-01
NHTSA componentPOWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)

NHTSA's summary

FORD/MERCURY: SOME VEHICLES MAY EXHIBIT VARIOUS SYMPTOMS SUCH AS DRIVABILITY SYMPTOMS, INCLUDING BUT NOT LIMITED TO NO CRANK WITH/WITHOUT BLOWN FUSE, AND ILLUMINATION OF MALFUNCTION INDICATOR LAMP. *PE

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

Transmission and driveline, Automatic transmission, Transmission control module

Vehicles listed
FORD EXPLORER2008
FORD EXPLORER SPORT TRAC2008
MERCURY MOUNTAINEER2008

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

Recalls for the same vehicles and component
07V4530002007-09-26. POWER TRAIN:AUTOMATIC TRANSMISSION:COOLING UNIT AND LINES

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
SSM 519092023-10-04. Service bulletin. When performing any transmission fluid changes or topoffs involving MERCON SP, MERCON LV has replaced all versions of MERCON SP and can be used going forward. Mixing MERCON LV and MERCON SP in the same transmission is acceptable. After 30-Jun-2023, MERCON SP ATF will no longer be manufactured and will only be available until inventory depletes.
TSB-08-9-52008-10-24. Service bulletin. FORD/MERCURY: 4.0L/4.6L HARD START/ROUGH RUNNING; AFTER LONG HOT SOAK/DIP IN RPM WHEN COMING TO A STOP; BUILT ON OR BEFORE 4/2/08. MAY EXHIBIT A DIP IN RPM BELOW NORMAL IDLE LEVEL OF 600 RPM ON DECELERATION. *PE