2021 Paccar MX-11

Service bulletins

Technical service bulletins and other communications the manufacturer sent dealers about this vehicle. Ask a dealer for the full document by its number.

• 11009718EPA21 Pack 2 Injectors Newly designed fuel injectors are available for EPA2021 compliant PACCAR MX-series engines to optimize engine performance. Injectors must be replaced as a full set (6 injectors) and associated software must be updated at the same time.
• 10254155Certain chassis that completed the E310 software update and received the specified in-tank additive may require additional doses of the in-tank additive. This bulletin covers additional additive eligibility criteria and filing.
• 10214855Info Only: LIN hybrid switch harnesses are available to order from PACCAR Parts.
• 10213098An EPA21 MX fuel injector cleaning procedure is available. The attached document details the fuel injector cleaning procedure and helps to determine when it is necessary to replace the injectors.
• 10201965Fix-As-Fail Due to undersupply issues, only a limited supply of Diesel Exhaust Fluid (DEF) sensors are available. As a temporary solution, after PACCAR confirms a DEF sensor is not available, a temporary software update will allow a vehicle to continue operation with a failed DEF sensor by disabling the DEF sensor diagnostics.
• 10199943Emissions Recall - PACCAR MX-13 Engine Model Year 2015B engines require a software update to ensure emissions compliance for On-Board Diagnostic (OBD).
• 10198761Information Only C hassis equipped with MY2021 B EPA emission s standards will be shipped through atleast the end of the 2021 calendar year without particulate matter (PM) sensors installed .
• 10194783Alternative PACCAR Approved Counterbore Tool Availability and new Indicator Block

Every Paccar MX-11 model year

Bars are owner complaints, dots mark years with recalls. Select a year to open its report.