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Service bulletin FSB-49-37

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 id10058330
Published by NHTSA2015-09-02
Manufacturer's numberFSB-49-37
Manufacturer's date2015-03-01
NHTSA componentENGINE AND ENGINE COOLING:ENGINE:DIESEL

NHTSA's summary

FREIGHTLINER: TRUCK PARKED AND TURNED OFF FOR EXTENDED TIME WILL HAVE ICE EXPANSION BREAKING DEF HEADER, IF FREEZES, UNDER EXTREME COLD CONDITIONS. MODEL BUSINESS CLASS M2, 108SD/114SD. NO YEARS LISTED. *PE

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

Engine

Vehicles listed
FREIGHTLINER 108SD2015
FREIGHTLINER 114SD2015
FREIGHTLINER BUSINESS CLASS M22015

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

Recalls for the same vehicles and component
20153362015-07-24. Engine
15V3430002015-06-03. ENGINE AND ENGINE COOLING:ENGINE
20140502014-02-21. Engine
14V0800002014-02-21. ENGINE AND ENGINE COOLING:ENGINE

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
CXA 3_25_NOx2025-04-02. Other. CX Advocate for NOx conversion low faults
CXA 2_25_Turbo Oil Drain2025-03-04. Other. CX Advocate for turbo oil drain cracking
CXA 2_25_NOx2025-03-04. Other. CX Advocate for NOx conversion low faults
CXA 1_16_Turbo Oil Drain2025-01-29. Other. CX Advocate for turbo oil drain cracking
CXA 1_16_NOx2025-01-29. Other. CX Advocate for NOx conversion low faults
CXA 1_16_DD13 Altitude2025-01-29. Other. CX Advocate for DD13 Gen 5 engines operating at high altitude experience EGR slow response fault.
CXA 7_24_Oil Suction2024-08-02. Other. CX Advocate for Oil Suction manifolds
CXA 7_24_NOx2024-08-02. Other. CX Advocate for NOx conversion low faults. Update to CXA 6_24_NOx submission.
CXA 06_24_NOx2024-07-09. Other. CX Advocate communication for NOx conversion low faults
SB49-0422022-03-03. Service bulletin. Freightliner Service Bulletin for DEF Connector Reinforcement Caps.