No complaints are listed for the 2004 Mack MR. NHTSA's API and bulk file list none in this build.
Data build 2026-10-07.
NHTSA lists this vehicle as MACK MR.
Model-generated complaint tags: No complaints are listed for tagging.
Recalls
6 recalls.
Date: 2012-01-20. Systems: SUSPENSION.
Defect: MACK TRUCKS IS RECALLING CERTAIN MODEL YEAR 2002-2005 MR AND LE HEAVY TRUCKS, MANUFACTURED FROM FEBRUARY 1, 2002, THROUGH DECEMBER 22, 2004. OVER TIME, THE VEHICLEA S LOAD MAY RESULT IN FATIGUE CRACKS OF THE FRONT AXLE BEAM. THESE CRACKS CAN PROPAGATE AND RESULT IN COMPLETE FRACTURE OF THE AXLE BEAM. (excerpt)
Consequence: IF COMPLETE FRACTURE OCCURS, THE DRIVER MAY LOSE CONTROL OF THE VEHICLE, INCREASING THE RISK OF A CRASH. (excerpt)
Remedy: THIS RECALL RELATES TO PREVIOUS RECALLS 09V-240 AND 10V-069. ANALYSIS OF THESE RECALLS HAS SHOWN THAT AFTER THE RECEIVING THE REMEDIES, THE AXLES MAY STILL CRACK. AS SUCH, MACK TRUCKS WILL REPLACE THE AFFECTED AXLES ON ANY MR AND LE MODELS CONFIGURED AS FRONT-LOADER OR SIDE-LOADER REFUSE TRUCKS. AXLES ON ALL OTHER MR AND LE MODELS WILL RECEIVE A MAG-PARTICLE INSPECTION AND MACK WILL REPLACE ANY (excerpt)
Do not drive: No. Park outside: No.
Date: 2010-03-03. Systems: POWER TRAIN.
Defect: MACK TRUCKS IS RECALLING CERTAIN MODEL YEAR 2002 THROUGH 2004 CL, CV, LE, MR, RB, RD, AND MODEL YEAR 2003 THROUGH 2004 DM HEAVY TRUCKS MANUFACTURED FROM FEBRUARY 1, 2002 THROUGH SEPTEMBER 30, 2003, EQUIPPED WITH AXLE BEAMS MANUFACTURED BY BHARAT FORGE. THE AXLE BEAM MAY HAVE TRANSVERSE SHEAR LINES ON THE BOTTOM OF THE AXLE FROM THE TRIMMING PROCESS.
Consequence: THESE LINES, IF PRESENT, CAN PROMOTE INITIATION OF CRACKS, WHICH OVER TIME MAY POSSIBLY LEAD TO AXLE BEAM FAILURE AND A VEHICLE CRASH CAN OCCUR.
Remedy: MACK WILL NOTIFY OWNERS, INSPECT AND REPLACE ANY AFFECTED AXLE BEAMS FREE OF CHARGE. THE SAFETY RECALL BEGAN ON MARCH 5, 2010. OWNERS MAY CONTACT MACK AT 1-800-866-1177.
Do not drive: No. Park outside: No.
Date: 2009-06-30. Systems: POWER TRAIN.
Defect: MACK IS RECALLING 10,300 MODEL YEAR 2004 AND 2005 CL, CV, DM, LE, AND RB AND MODEL YEAR 2004 RD HEAVY TRUCKS MANUFACTURED FROM OCTOBER 1, 2003 THROUGH SEPTEMBER 30, 2004, EQUIPPED WITH AXLE BEAMS MANUFACTURED BY BHARAT FORGE. THE AXLE BEAM MAY HAVE TRANSVERSE SHEAR LINES ON THE BOTTOM OF THE AXLE FROM THE TRIMMING PROCESS.
Consequence: THESE LINES, IF PRESENT, CAN PROMOTE INITIATION OF CRACKS, WHICH OVER TIME MAY POSSIBLY LEAD TO AXLE BEAM FAILURE AND A VEHICLE CRASH CAN OCCUR.
Remedy: MACK WILL NOTIFY OWNERS, INSPECT AND REPLACE ANY AFFECTED AXLE BEAMS FREE OF CHARGE. THE SAFETY RECALL BEGAN ON AUGUST 14, 2009. OWNERS MAY CONTACT MACK AT 1-800-866-1177.
Do not drive: No. Park outside: No.
Date: 2005-11-17. Systems: FUEL SYSTEM, DIESEL.
Defect: ON CERTAIN DIESEL POWERED HEAVY DUTY TRUCKS, THE BOLTS ATTACHING THE FUEL TANK MOUNTING BRACKETS TO THE FRAME MAY HAVE INSUFFICIENT TORQUE AND THEREFORE MAY RESULT IN PREMATURE FAILURE OF THE FUEL TANK MOUNTING.
Consequence: IF THE FUEL TANK FALLS, THERE IS THE POTENTIAL FOR THE TANK TO IGNITE, RESULTING IN PERSONAL INJURY, VEHICLE AND PROPERTY DAMAGE.
Remedy: DEALERS WILL INSPECT AND REPLACE THE FUEL TANK BRACKET MOUNTING BOLTS FREE OF CHARGE. THE RECALL BEGAN ON FEBRUARY 6, 2006. OWNERS MAY CONTACT MACK TRUCKS AT 1-800-528-6586.
Do not drive: No. Park outside: No.
Date: 2005-07-07. Systems: SUSPENSION.
Defect: ON CERTAIN HEAVY DUTY CLASS 8 TRUCKS EQUIPPED WITH HOLLAND AIR SUSPENSION SYSTEMS, A TRANSVERSE BEAM CASTING MAY FRACTURE UNDER NORMAL LOADS. IF A CASTING BREAKS WHEN THE VEHICLE IS TRAVELING ON A ROADWAY THERE IS THE POTENTIAL FOR PIECES OF THE CASTING TO BECOME PROJECTILES AND THE SUSPENSION'S TRANSVERSE BEAM MAY DROP DOWN LOW ENOUGH TO CONTACT THE ROAD SURFACE.
Consequence: THIS WILL CAUSE SPARKS THAT COULD POTENTIALLY IGNITE AND CAUSE A FIRE.
Remedy: DEALERS WILL INSPECT AND REPLACE THE DEFECTIVE TRANSVERSE BEAM ASSEMBLIES. THE RECALL BEGAN ON AUGUST 19, 2005. OWNERS MAY CONTACT MACK TRUCKS AT 610-709-2131.
Do not drive: No. Park outside: No.
Date: 2004-04-07. Systems: FUEL SYSTEM, OTHER.
Defect: ON CERTAIN CHASSIS BUILT WITH LNG ENGINES, THE NEXGEN LNG TANK'S PRIMARY AND SECONDARY RELIEF VALVES COULD FAIL TO OPEN AND RELIEVE TANK PRESSURE.
Consequence: THIS COULD CAUSE ICE BUILDUP ON THE DISCHARGE SIDE OF THE PRIMARY AND SECONDARY PRESSURE SYSTEM ALLOWING THE RELIEF SYSTEM TO FREEZE AND BECOME BLOCKED RESULTING IN OVER PRESSURIZATION OF THE LNG TANKS CREATING THE RISK OF CATASTROPHIC TANK RUPTURE WHICH COULD CAUSE SERIOUS INJURY OR DEATH.
Remedy: DEALERS WILL RETROFIT THE LNG TANKS WITH A NEW PRIMARY RELIEF VALVE PIPE AWAY TUBE AND A NEW VENTILATED SHROUD. THE RECALL BEGAN APRIL 6, 2004. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT MACK AT 1-610-709-3337.
Do not drive: No. Park outside: No.
Manufacturer communications
38 manufacturer communications.
Communications by system| System | Count |
|---|
| ENGINE AND ENGINE COOLING | 13 |
|---|
| ELECTRICAL SYSTEM | 11 |
|---|
| POWER TRAIN | 6 |
|---|
| EQUIPMENT | 5 |
|---|
| SERVICE BRAKES | 2 |
|---|
| SUSPENSION | 2 |
|---|
| UNKNOWN OR OTHER | 2 |
|---|
| VEHICLE SPEED CONTROL | 2 |
|---|
11032092
Date: 2026-04-09. Type: Service Bulletin/Repair Instructions. Systems: POWER TRAIN.
CBR - Mack Chassis - Through Shaft Bearing Retainer Breakage On Mack Carriers.
11021332
Date: 2025-07-28. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM.
CBR - A significant GPS reporting issue is affecting fleet operations, with trucks maintaining back-office communication but failing to transmit GPS location data.
11021333
Date: 2025-07-17. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM, SERVICE BRAKES.
CBR - To correct the MID136 SID 66 FMI 7 fault code the latest Bendix VCP file will need to downloaded.
11008366
Date: 2024-09-13. Type: Service Bulletin/Repair Instructions. Systems: SERVICE BRAKES.
CBR: To correct the MID136 SID 66 FMI 7 fault code the latest Bendix VCP fi le will need to be downloaded.
10246086
Date: 2023-11-07. Type: Service Bulletin/Repair Instructions. Systems: POWER TRAIN.
TSB: Mack Trucks now offer an improved HD Inter-Axle Through Shaft for the CRD 125, 150, 180, and 200 family carriers. The new HD shaft went into production on January 23rd, 2023 for 2.54 - 3.50 axle ratios and April 1st, 2023 for 3.56 - 3.98 ratios. The new HD through shaft is an upgrade over the c
10241946
Date: 2023-08-14. Type: Service Bulletin/Repair Instructions. Systems: SUSPENSION.
TSB: Barksdale Leveling Valve, Leak Test
10238788
Date: 2023-06-06. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM.
V-MAC III Odometer And Engine Hours Programming
10237339
Date: 2023-05-24. Type: Service Bulletin/Repair Instructions. Systems: EQUIPMENT.
CBR: eWarranty To UCHP Labor Code ( SCC Code ) Crossover, Conversion Information For Use With Campaigns ( FI, PI ) And Recalls ( EC, SC ), Location On Trucks Dealer Portal ( TDP )
10232598
Date: 2023-02-08. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM.
Instrument Cluster Programming - Programming Fails Or Errors Display When Replacing An Instrument Cluster With A Newer Part Number (Conversion Kit) - US04 To US10 Chassis (9-Pin Diagnostic Connector)
10215287
Date: 2022-06-28. Type: Service Bulletin/Repair Instructions. Systems: ENGINE AND ENGINE COOLING.
US10 Emission Engines - Diagnostic Trouble Code ( DTC ) SPN 1231 FMI 9 Troubleshooting.