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Service bulletin 18511

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 id10014697
Published by NHTSA2005-05-05
Manufacturer's number18511
Manufacturer's date2005-03-01
NHTSA componentELECTRICAL SYSTEM:HORN

NHTSA's summary

HIGH EFFORT TO ACTIVATE HORN. *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

Electrical system

Vehicles listed
FORD CROWN VICTORIA2005
LINCOLN TOWN CAR2005
MERCURY GRAND MARQUIS2005

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

Recalls for the same vehicles and component
20156102015-12-21. Electrical
05V5180002005-11-09. ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES
20053502005-11-08. Electrical
05V2060002005-05-09. ELECTRICAL SYSTEM:WIRING:INTERIOR/UNDER DASH

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
ASI-451822016-06-22. Service bulletin. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
06282006-03-13. Service bulletin. MALFUNCTION INDICATOR LAMP ON WITH DIAGNOSTIC TROUBLE CODES P0305, P0316, P0171, AND/OR P0174 AFTER EXTENDED IDLE. *TT
0513102005-10-11. Service bulletin. HIGH EFFORT TO ACTIVATE HORN - VEHICLES BUILT BEFORE 5/6/2005. *TT OASIS. *TT
0424232005-04-29. Service bulletin. MALFUNCTION INDICATOR LAMP (MIL) ON WITH DIAGNOSTIC TROUBLE CODE (DTC) P0455 OR P0457. *TT
042122005-04-15. Service bulletin. POLICE INTERCEPTOR VEHICLES EQUIPPED WITH FRONT POWER DISTRIBUTION BOX (PDB) OPTION 66F - BLUNT CUT WIRES ACCESSIBILITY - SERVICE TIP. *TT
183832005-04-14. Service bulletin. AM/FM AND CELLULAR PHONE RECEPTION INTERFERENCE - SERVICE TIP. *TT
05232005-04-05. Service bulletin. DELAYED REVERSE ENGAGEMENT. *EH