WenmarOpen by Wenmar Pro

Service bulletin 03132

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 id10003727
Published by NHTSA2003-10-29
Manufacturer's number03132
Manufacturer's date2003-07-07
NHTSA componentSUSPENSION:FRONT:SPRINGS:AIR SUSPENSION SYSTEM

NHTSA's summary

THIS ARTICLE ADDRESSES THE PROPER PROCEDURE TO CLEAR DIAGNOSTIC TROUBLE CODES C1990 OR C1991 FROM THE VEHICLE DYNAMICS MODULE/4-WHEEL AIR SUSPENSION MODULE. *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

Suspension, Air suspension

Trouble codes named

C1990, C1991

Vehicles listed
FORD EXPEDITION2003
LINCOLN NAVIGATOR2003

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
0615102007-02-27. Service bulletin. AIR SUSPENSION PERFORMANCE - HEIGHT SENSOR LINKAGE ARM DISENGAGING. *KB
184002005-04-05. Service bulletin. FOUR CORNER LOAD LEVELING AIR SUSPENSION MAY EXHIBIT LEVELING CONCERNS, SUCH AS ONE FRONT CORNER DROPPING. INDIVIDUAL AIR SPRINGS AVAILABLE FOR SERVICE. *TT
04542004-08-04. Service bulletin. AIR SUSPENSION COMPRESSOR NOISE. *TT
167622003-09-10. Service bulletin. RIDE HEIGHT ANOMALIES ON VEHICLES EQUIPPED WITH AIR SUSPENSION, I.E. FRONT SUSPENSION LOWERING WHILE REAR RISES, DUE TO LEAKING SOLENOIDS.
167052003-07-28. Service bulletin. AIR SUSPENSION DIAGNOSIS. *TT *JB