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Service bulletins for the 2018 Mack LR

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.

262 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Bulletins, newest first
K147014332018-03-12. Service bulletin. FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:PRESSURE RELIEF DEVICES. Diagnostic Trouble Code ( DTC ) P009E - 73 - Fuel Pressure Relief Control Performance / Stuck Off - GHG17 ( US17 ) Chassis With Common Rail Fuel System.Changed repair instructions to reflect new procedures
K430562542018-03-12. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. Mack Chassis - Aftertreatment Control Module ( ACM ) not visible in Premium Tech Tool ( PTT ).Added more checks and procedures
K146374122018-03-12. Service bulletin. FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:FUEL RAIL. Diagnostic Trouble Code ( DTC ) P0194 - 00 - Fuel Rail Pressure Sensor ( RPS ), Circuit Erratic, Intermittent - US17 ( GHG17 ) Emissions And Newer ( Common Rail Fuel System ); Common Model Years 2017 And 2018.Changed repair instructions to reflect new procedures
K954220632018-03-12. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; ENGINE AND ENGINE COOLING:ENGINE:DIESEL; FUEL SYSTEM, DIESEL; ENGINE. Mack Chassis - Diagnostic Trouble Code ( DTC ) P2459 Lighting The Malfunction Indicator Lamp ( MIL ); Possible Frequent Regeneration Requests - OBD15 And Newer Chassis
K860946412018-03-12. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OTHER FUEL TYPES:TURBO/SUPERCHARGER; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; ENGINE. Mack Chassis - Diagnostic Trouble Code ( DTC ) P226C Intermittently Lighting The Malfunction Indicator Lamp ( MIL ) - OBD15 And OBD16 Conventional Chassis.Updated to reflect release of FSB284-064 (Above)
K459415122018-03-12. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. Mack Chassis - Diagnostic Trouble Code ( DTC ) P0128, Diagnostic And Repair - US14+OBD13 (Commonly Year Model 2015) And Newer.Updated to reflect release of FSB284-064 (Above)
K427083992018-03-12. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. Diagnostic Trouble Code ( DTC ) P0422 Lighting The Malfunction Indicator Light ( MIL ) - OBD15 And OBD16 Chassis (Non-Common Rail).Updated to reflect release of FSB284-064 (Above)
FSB8730212018-03-12. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. HVAC Filter Blocked, Repair, LR
K778644012018-03-12. Service bulletin. FUEL SYSTEM, DIESEL; FUEL SYSTEM, OTHER:DELIVERY:FUEL PUMP; FUEL SYSTEM, GASOLINE. Mack Chassis - Diesel Exhaust Fluid ( DEF ) System Cleaning/Flush After A Pump Failure or System Contamination.Removed Tech Tip, Added correct operation ID
K535104522018-03-12. Service bulletin. FUEL SYSTEM, DIESEL; FUEL SYSTEM, GASOLINE. Expired - Refer to K93039325 - Mack Chassis - SNM16-032 DEF (Diesel Exhaust Fluid) Contamination In Diesel Fuel.New solution released with improved information
K244831572018-01-16. Service bulletin. ELECTRICAL SYSTEM. Diagnostic Trouble Codes ( DTC ) P208E And P103B Logging With Possible Derate (SCR Inducement ) - US13 Emissions And Newer
FSB652-0052017-11-09. Service bulletin. SUSPENSION; ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC). On some MACK CHU, CXU, GU, TD, LEU, LR, and MRU trucks built from 01/14/2013 and 01/20/2017, the V-Stay carrier bolt hole in the mRide suspension may become stripped, causing the V-Stay torque rod bolt to pull free from the carrier housing.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.