WenmarOpen by Wenmar Pro

Service bulletin 503-14

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 id10141904
Published by NHTSA2018-06-18
Manufacturer's number503-14
Manufacturer's date2014-05-03
NHTSA componentELECTRICAL SYSTEM:WIRING; EQUIPMENT

NHTSA's summary

503-14 FMI 3, 4: High Side Digital Output 3 Circuit Failed High

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system, Equipment and accessories, Wiring and fuses

Vehicles listed
FCCC XBP2010 to 2015
FCCC XCM2010 to 2015
FCCC XCP2010 to 2015
FREIGHTLINER BUSINESS CLASS M22010 to 2015
FREIGHTLINER CASCADIA2010, 2011, 2012, 2013, 2014, 2015
FREIGHTLINER COLUMBIA2010, 2011, 2012, 2013, 2014, 2015
FREIGHTLINER CORONADO2010, 2011, 2012, 2013, 2014, 2015
WESTERN STAR 47002010, 2011, 2012, 2013, 2014, 2015
WESTERN STAR 49002010, 2011, 2012, 2013, 2014, 2015

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

Recalls for the same vehicles and component
13V6270002013-12-17. ELECTRICAL SYSTEM:WIRING; PARKING BRAKE; SUSPENSION:MULTIPLE AXLE

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
CALHIGHCURRENT2020-03-03. Service bulletin. Customer Advisory Letter that an inspection to determine if the high current breaker has been bypassed.
wp54018 EPA102019-04-08. Service bulletin. Technical Bulletin wp54018 EPA10 Wiring Harness Ordering
wp54018 EPA102019-04-01. Service bulletin. Technical Bulletin wp54018 EPA10 Wiring Harness Ordering
DOC-10333332018-10-29. Service bulletin. SS 1033333 - WST ECC Replacement Jumper Harness Installation.
SF4802018-06-18. Service bulletin. SF480-DLR Qualcomm TrailerTRACS Wiring
sb542022018-06-18. Service bulletin. sb54202 Rerouting the DDEC IV Relative-Humidity-Sensor Harness
sb26522018-06-18. Service bulletin. sb2652 DT12 PTO UpfitB
fp540312018-06-18. Service bulletin. fp54031 Ordering Service Wiring Harnesses for Cascadia
SF5142018-02-12. Service bulletin. Western Star ABS Wiring - Export Only
14CSA222017-11-17. Service bulletin. 14CSA22 DTNA Chassis Wiring Diagrams