RoadVitals

1985 Mack Mh

Recalls, owner-reported complaints, investigations and safety data

Owner complaintsComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
0
Safety recallsA safety recall is issued when a manufacturer or NHTSA determines that a vehicle has a safety-related defect or does not comply with a federal motor vehicle safety standard. Recall repairs are free. Whether a specific vehicle is covered depends on its VIN — a recall listed for a model year does not necessarily apply to every vehicle of that year.
5
Latest Sep 6, 1988
InvestigationsNHTSA opens an investigation to examine whether a safety defect may exist. An open investigation is not a determination that a defect exists, and many investigations close without a recall. Investigations can, however, lead to one.
1
Crash or fire reportedComplaints whose submitter recorded that a crash or a fire occurred. These are the reporter's own answers on the NHTSA form, not verified findings.
0

Overview

Our database contains no NHTSA owner-reported complaints for the 1985 Mack Mh. 5 safety recalls have been issued covering this model year; 1 NHTSA investigation names it; and 22 manufacturer communications are on file.

Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.

Safety recalls

5 campaigns cover this model year

View all 5

Recalls apply to specific vehicles, not to every vehicle of a model year. Check your VIN with NHTSA or your manufacturer's dealer to confirm whether a recall affects your vehicle.

Check a VIN on NHTSA.gov
88V147000

SEAT BELTS

Sep 6, 1988
11,000 units potentially affected
The defect: SEAT TETHER BELTS MAY NOT HAVE BEEN ADJUSTED DURING ASSEMBLY.
The risk: DURING AN IMPACT, DRIVER AND/OR RIDER CAN MOVE FORWARDAND POSSIBLY STRIKE THE WINDSHIELD, EVEN WHEN WEARING A SEAT BELT.
The remedy: ADJUST SEAT TETHER BELT IF NECESSARY.
MACK TRUCKS, INCORPORATEDView on NHTSA.gov
86V008000

STRUCTURE

Jan 17, 1986
7,000 units potentially affected
The defect: LEFT OR RIGHT CAB STEP MAY CRACK IN ITS WELDED AREA DUE TO FLEXING OF THE STEP DURING ENTERING AND EXITING. CONSEQUENCE OF DEFECT: AS THE CRACKS EXTEND, THE TUBULAR STEP COULD PARTIALLY COLLAPSE AND BREAK WITHOUT WARNING TO THE USER, AND COULD RESULT IN PERSONAL INJURIES.
The remedy: INSTALL A REINFORCEMENT BRACE IF NO CRACKS ARE FOUND. IN ADDITION, REPLACE STEP IF CRACKS ARE PRESENT.
MACK TRUCKS, INCORPORATEDView on NHTSA.gov
85V113000

SERVICE BRAKES, AIR

Sep 17, 1985
5,020 units potentially affected
The defect: THE DUAL DOUBLE CHECK VALVE MAY NOT RELEASE THE PROPER AIR VOLUME TO THE BRAKE SYSTEM, CAUSING A SLIGHT TIMING DELAY BETWEEN THE TRACTOR AND THE TRAILER BRAKE SYSTEM. CONSEQUENCES OF DEFECT: IF THE BRAKES ARE SUDDENLY APPLIED, THE TRAILER COULD JACKKNIFE WITHOUT WARNING TO THE OPERATOR, WHICH COULD RESULT IN A VEHICLE CRASH.
The remedy: INSTALL TWO NEW SLEEVES IN THE DUAL DOUBLE CHECK VALVE WHICH WILL INCREASE AIR FLOW.
MACK TRUCKS, INCORPORATEDView on NHTSA.gov

Safety investigations

NHTSA inquiries naming this vehicle. An investigation is not a finding of a defect.

PE88061ClosedPreliminary Evaluation

SEAT TETHER FAILURE

Opened Jun 21, 1988
Closed Sep 12, 1988

SUMMARY: TRUCK DRIVER REPORTS SEAT TEATHERS ARE NOT PROPERLY ADJUSTED AT FACTORY, ALLOWING SEAT TO HINGE FORWARD IN A COLLISION. TEATHERS ACT AS RESTRAINERS, AND IF IMPROPERLY ADJUSTED SEAT BELT IS USELESS AS IT IS ATTACHED TO THE SEAT. DURING SUDDEN DECELERATION OR COLLISION THE WHOLE ASSEMBLY HINGES FORWARD ALLOWING POSSIBLE FACIAL CONTACT WITH THE WINDSHIELD.===

SEATSLed to recall 88V147000

Recent owner complaints

Reports submitted to NHTSA, shown in the owner's own words

No owner complaints recorded for this model year

Either none have been filed with NHTSA, or this vehicle is too new for reports to have accumulated.

Manufacturer communications

A bulletin sent by a manufacturer to its dealers. Not a recall, and repairs are not necessarily free.

KC-750

ENGINE AND ENGINE COOLING

US10 Emission Engines - Diagnostic Trouble Code ( DTC ) SPN 1231 FMI 9 Troubleshooting.

KC-745

POWER TRAIN

Automated Manual Transmission ( AMT ) I-Shift / mDRIVE - Ribbon Harness Replacement - Speed Sensor Bolts, Possible Fault Codes P1058 - 21 Or MID 130 PID 161 FMI 1

KC-2143

VEHICLE SPEED CONTROL

(Back Office) - Cruise Control Inoperative After Updating Software VECU5 Without ESP Package (UESP).

KC-2112

ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING; POWER TRAIN

Programming Failure - Chassis With Cummins Engine And An Allison Transmission

KC-2158

ENGINE AND ENGINE COOLING

Selective Catalytic Reduction (SCR) Muffler Troubleshooting Guide - US10+OBD13 And Newer Emissions

KC-2165

ENGINE AND ENGINE COOLING

DEF Pump Troubleshooting Guide - US10+OBD13 And Newer Emissions

Manufacturers file copies of the bulletins they send to dealers with NHTSA. These often describe diagnostic or repair procedures for a known condition. They are not recalls: repairs described in a bulletin are usually only free if the vehicle is still under warranty or the manufacturer has extended coverage.

Compare model years

Complaint and recall counts across every year of this model

Mack Mh by model year
YearComplaintsRecallsInvestigationsIssue Index
1993010—
1992020—
1991010—
1990010—
1989020—
1988040—
1987060—
1986031—
1985Viewing051—
1984090—
1983080—
1982070—
1981000—

Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers. Older model years have had longer for reports to accumulate.