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Service bulletin 05121

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 id10016782
Published by NHTSA2005-10-07
Manufacturer's number05121
Manufacturer's date2005-01-01
NHTSA componentPOWER TRAIN

NHTSA's summary

ENGINE QUITS UPON DRIVE OR REVERSE ENGAGEMENT, OR WHEN COMING TO A STOP-TORQSHIFT TRANSMISSION. *SC

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

Vehicles listed
FORD E-1502005
FORD E-2502005
FORD E-3502005
FORD E-4502005
FORD EXCURSION2005
FORD F-250 SD2005 (the catalog's model; the bulletin names a series or trim of it)
FORD F-350 SD2005 (the catalog's model; the bulletin names a series or trim of it)
FORD F-450 SD2005 (the catalog's model; the bulletin names a series or trim of it)
FORD F-550 SD2005 (the catalog's model; the bulletin names a series or trim of it)

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.
ASI-445342014-10-01. Service bulletin. FORD: WHEN SHIFTING BETWEEN PARK, REVERSE AND/OR DURING 2-3 SHIFT, AN INTERMITTENT CLUNK OCCURS WITH A TORQSHIFT TRANSMISSION. MODEL 2003-2014 F-SUPER DUTY, E SERIES, EXCURSION, F-53 MOTORHOME CHASSIS, LOW CAB FORWARD. *PE
ASI-444042014-06-24. Service bulletin. FORD: ON SOME TRUCKS, THERE IS A NO CRANK SITUATION AND IF VOLTAGE ON TRANSMISSION RANGE SENSOR AT PIN 21, IS LESS THAN 5 VOLTS, DISCONNECT THE ENGINE COOLING FAN CLUTCH, ELECTRONICALLY, AND RECHECK VOLTAGE. MODEL 2003-2007 F SUPER DUTY, 2004-2010 E SERIES, 2003-2005 EXCURSION.
SB-209372009-12-09. Service bulletin. FORD: MULTIPLE VEHICLES WITH A TORQ SHIFT TRANSMISSION INTERMITTENT CLUNK WHEN SHIFTING BETWEEN DRIVE, REVERSE AND PARK AND/OR DURING 2-3 UPSHIFT. MODELS F SUPER DUTY; E SERIES; EXCURSION; F53 MOTORHOME CHASSIS AND LOW CAB FORWARD. *PE
TSB-08-18-22009-06-26. Service bulletin. FORD/MERCURY/LINCOLN: VEHICLES MAY EXHIBIT ONE OR MORE OF THE FOLLOWING SYMPTOMS: DRIVE AWAY HESITATION, LOSS OF RPM ON DECELERATION, DIFFICULTY STARTING, AND/OR IDLE RPM LESS THAN DESIRED. THE F53 MOTORHOME CHASSIS IS INCLUDED. *PE
CSP-48B012008-10-17. Service bulletin. FORD: VEHICLES MISTAKENLY CHARGED $100 POWERTRAIN WARRANTY DEDUCTIBLE FOR FUEL INJECTOR REPAIR OR REPAIRS. NO MODEL OR MODEL YEARS PROVIDED. *PE ECONOLINE, EXCURSION AND F-SERIES SUPER DUTY VEHICLES, MODEL YEARS 2002-2005. UPDATED 10/24/08. *PE CSC LETTER WAS RECEIVED. UPDATED 10/27/08. *PE
202322008-06-03. Service bulletin. 2005-08 F250-550 SUPER DUTY MANUAL TRANSMISSION - CLUTCH PEDAL CONCERN. *NJ
200522008-01-23. Service bulletin. 1999-2008 F250-F550 SUPER DUTY 4X4 WITH ELECTRONIC SHIFT TRANSFER CASE NOT ENGAGING 4X4. *NJ
199892007-12-11. Service bulletin. 2005-2008 F-SUPER DUTY MANUAL TRANSMISSION- CLUTCH PEDAL CONCERN. *NJ
07692007-07-25. Service bulletin. BUCK/JERK WHEN PULLING LARGE HEAVY GOOSENECK TRAILERS. DIESEL ENGINES. REPROGRAMMING THE POWERTRAIN CONTROL MODULE (PCM) WITH THE LATEST CALIBRATION MIGHT SOLVE THE ISSUE. *KB