TSB: FREIGHTLINER M2 (2004–2021)

Bulletin FAB156 — March 1, 2014

Bulletin Details

Bulletin IDFAB156
ManufacturerFREIGHTLINER
ModelsM2
Model Years2004–2021
Date IssuedMarch 1, 2014
Date Added to NHTSAMay 17, 2021
ComponentELECTRICAL SYSTEM:HAND HEATER:WIRING HARNESS
Vehicles Affected40 combinations

What is a TSB?

A Technical Service Bulletin is a document issued by the vehicle manufacturer to inform dealership technicians about a known issue and the recommended repair procedure. TSBs are not mandatory recalls — they serve as repair guidance for common problems.

If your vehicle has this issue, bring this bulletin ID to your dealer. If under warranty, the repair should be covered at no cost.

Summary

Freightliner Action Bulletin FAB156 M2 aux rear heat and AC

Affected Vehicles

MakeModelYearComponent
FREIGHTLINER M2 2021 110220 ELECTRICAL SYSTEM:HAND HEATER:WIRING HARNESS
FREIGHTLINER M2 2021 357100 EQUIPMENT:APPLIANCE:AIR CONDITIONER
FREIGHTLINER M2 2018 110220 ELECTRICAL SYSTEM:HAND HEATER:WIRING HARNESS
FREIGHTLINER M2 2018 357100 EQUIPMENT:APPLIANCE:AIR CONDITIONER
FREIGHTLINER M2 2017 110220 ELECTRICAL SYSTEM:HAND HEATER:WIRING HARNESS
FREIGHTLINER M2 2017 357100 EQUIPMENT:APPLIANCE:AIR CONDITIONER
FREIGHTLINER M2 2016 110220 ELECTRICAL SYSTEM:HAND HEATER:WIRING HARNESS
FREIGHTLINER M2 2016 357100 EQUIPMENT:APPLIANCE:AIR CONDITIONER
FREIGHTLINER M2 2015 110220 ELECTRICAL SYSTEM:HAND HEATER:WIRING HARNESS
FREIGHTLINER M2 2015 357100 EQUIPMENT:APPLIANCE:AIR CONDITIONER
FREIGHTLINER M2 2014 110220 ELECTRICAL SYSTEM:HAND HEATER:WIRING HARNESS
FREIGHTLINER M2 2014 357100 EQUIPMENT:APPLIANCE:AIR CONDITIONER
FREIGHTLINER M2 2013 357100 EQUIPMENT:APPLIANCE:AIR CONDITIONER
FREIGHTLINER M2 2013 110220 ELECTRICAL SYSTEM:HAND HEATER:WIRING HARNESS
FREIGHTLINER M2 2012 110220 ELECTRICAL SYSTEM:HAND HEATER:WIRING HARNESS
FREIGHTLINER M2 2012 357100 EQUIPMENT:APPLIANCE:AIR CONDITIONER
FREIGHTLINER M2 2011 357100 EQUIPMENT:APPLIANCE:AIR CONDITIONER
FREIGHTLINER M2 2011 110220 ELECTRICAL SYSTEM:HAND HEATER:WIRING HARNESS
FREIGHTLINER M2 2010 357100 EQUIPMENT:APPLIANCE:AIR CONDITIONER
FREIGHTLINER M2 2010 110220 ELECTRICAL SYSTEM:HAND HEATER:WIRING HARNESS
FREIGHTLINER M2 2009 110220 ELECTRICAL SYSTEM:HAND HEATER:WIRING HARNESS
FREIGHTLINER M2 2009 357100 EQUIPMENT:APPLIANCE:AIR CONDITIONER
FREIGHTLINER M2 2008 110220 ELECTRICAL SYSTEM:HAND HEATER:WIRING HARNESS
FREIGHTLINER M2 2008 357100 EQUIPMENT:APPLIANCE:AIR CONDITIONER
FREIGHTLINER M2 2007 110220 ELECTRICAL SYSTEM:HAND HEATER:WIRING HARNESS
FREIGHTLINER M2 2007 357100 EQUIPMENT:APPLIANCE:AIR CONDITIONER
FREIGHTLINER M2 2006 357100 EQUIPMENT:APPLIANCE:AIR CONDITIONER
FREIGHTLINER M2 2006 110220 ELECTRICAL SYSTEM:HAND HEATER:WIRING HARNESS
FREIGHTLINER M2 2005 110220 ELECTRICAL SYSTEM:HAND HEATER:WIRING HARNESS
FREIGHTLINER M2 2005 357100 EQUIPMENT:APPLIANCE:AIR CONDITIONER
FREIGHTLINER M2 2004 357100 EQUIPMENT:APPLIANCE:AIR CONDITIONER
FREIGHTLINER M2 2004 110220 ELECTRICAL SYSTEM:HAND HEATER:WIRING HARNESS

Related FREIGHTLINER Recalls

CampaignModelYearComponentSummary
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BUSINESS CLASS M2 2025 STEERING:GEAR BOX (OTHER THAN RACK AN... Fontaine Modification Company (Fontaine Modification) is recalling certain 20...
108SD 2020 SUSPENSION:CRITICAL FASTENERS Daimler Trucks North America, LLC (DTNA) is recalling certain 2020-2026 Weste...
108SD 2021 SUSPENSION:CRITICAL FASTENERS Daimler Trucks North America, LLC (DTNA) is recalling certain 2020-2026 Weste...
108SD 2022 SUSPENSION:CRITICAL FASTENERS Daimler Trucks North America, LLC (DTNA) is recalling certain 2020-2026 Weste...

What Should You Do?

If your vehicle is affected by this TSB, contact your authorized FREIGHTLINER dealer. Bring this bulletin ID (FAB156) when you visit. If under warranty, the repair should be free. If your warranty has expired, ask about goodwill coverage — manufacturers sometimes cover TSB-related repairs beyond the warranty period.

Frequently Asked Questions

A recall is a mandatory safety fix — the manufacturer must repair every affected vehicle for free. A TSB is an advisory document that describes a known issue and the recommended fix, but repairs are not required. However, some TSBs eventually lead to recalls if the issue poses a safety risk. TSBs are generally issued for quality or performance problems, while recalls address safety defects.

If your vehicle is still under the manufacturer's warranty, TSB-related repairs are typically covered at no cost. If your warranty has expired, you can ask the dealer about goodwill or customer assistance programs. Many manufacturers will cover or partially cover repairs for well-known issues, especially if the TSB was issued recently or affects a large number of vehicles.

Check the make, model, and model year listed above against your vehicle. If they match, this bulletin likely applies. However, TSBs may only affect vehicles with specific production dates, VIN ranges, or configurations. Your dealer can confirm by entering your VIN into their service system, which will show all applicable TSBs and recalls.

This data comes from the National Highway Traffic Safety Administration (NHTSA). Manufacturers are required to submit copies of all communications (including TSBs) sent to their dealers to NHTSA. The agency makes this data publicly available as part of its vehicle safety monitoring program.