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Service bulletin 18440

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 id10012978
Published by NHTSA2005-04-05
Manufacturer's number18440
Manufacturer's date2005-02-01
NHTSA componentPOWER TRAIN:AUTOMATIC TRANSMISSION

NHTSA's summary

CHECK TRANSMISSION CONTROL MODULE CONNECTOR THIS MAY NOT BE FULLY SEATED. *EH

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

Vehicles listed
LINCOLN NAVIGATOR2005

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
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.
198462007-09-26. Service bulletin. FAILED TCM PROGRAMMING *NJ
06232006-03-13. Service bulletin. FLOOR MOUNTED SHIFTER STUCK IN PARK. *TT
0421072005-04-28. Service bulletin. GENERAL (PCM) POWER TRAIN CONTROL MODULE PROGRAMMING PROCEDURES. *TT
042172005-04-15. Service bulletin. GENERAL POWER TRAIN CONTROL MODULE (PCM) PROGRAMMING PROCEDURES. *TT
183942005-04-05. Service bulletin. TRANSMISSION SLIPS, SHIFTS SLOW OR LEAKS - SERVICE TIP. *TT
0419122004-12-07. Service bulletin. 6HP26 6-SPEED AUTOMATIC TRANSMISSION - SERVICE TIPS. *TT