Vehicle report

2021 MCI D4520

Compare every MCI D4520 yearNHTSA and EPA records

Service bulletins

11 bulletins

Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.

TSIB 26-07

Service Bulletin/Repair Instructions

This bulletin is to provide instructions for clearing DTC 1067 FMI 7 (Pressure Sensor Not Calibrated) and FMI 11 (Primary and Secondary Circuit Pressure Sensor (PS1/PS2) Plausibility Error - BS Pressure), when required to prevent the loss of Adaptive Cruise Control functionality and the illumination of a warning indicator.

TSIB 26-05

Service Bulletin/Repair Instructions

This bulletin introduces an optional product improvement to the A/C compressor drive system for coaches equipped with a Cummins X12. The improved pulley system is available for customers who wish to reduce noise and vibration characteristics and may be installed at the customer’s discretion.

TSIB 26-01

Service Bulletin/Repair Instructions

This TSIB provides information to provide a software update. Some coaches using MCC HVAC Eco-Tempo ECU # 07-10-009 software T35-1581 / V1.04 may be experiencing random fault codes due to MCC software errors.

TSIB 26-04

Service Bulletin/Repair Instructions

This TSIB is to inform customers the recommended steering axle cleaning/greasing instructions to prevent damage on axle components due to displacement of grease from the bearings, lubrication reduction and accelerate wear for coaches with independent front suspension.

TSIB 24-03

Service Bulletin/Repair Instructions

Information to owners showing the proper procedure for checking the oil level in a BITZER HVAC compressor.

ITS61012

Service Bulletin/Repair Instructions

Service instruction for updating plug doors to improve reliability and reduce wind noise.

ITS60634

Service Bulletin/Repair Instructions

Instructions to properly adjust entrance door to ensure proper operation.

ITS60624

Service Bulletin/Repair Instructions

Instructions for improving fuel tank venting while fueling.

TSIB 22-04

Service Bulletin/Repair Instructions

Technical Service Information Bulletin describing the retrofit for the front junction box cover on specifically equipped buses.

TSIB 22-02

Service Bulletin/Repair Instructions

This Technical Service Information Bulletin is a supplemental reminder to all MCI owners/operators of vehicles which are affected by the Cummins Equipment Recall 21E-099 and MCI Vehicle recall 21V-971.

TSIB 21-01

Service Bulletin/Repair Instructions

This Technical Service Information Bulletin (TSIB) describes an update from Meritor for the bolt torque application requirements on hub-to-rotor bolts for the front, drive and tag axles, on specific coaches equipped with Meritor EX225 disc brakes, on either Conventional, PreSet or Unitized Wheel-End hubs.

Reading this report

Complaint counts are reports filed with NHTSA, not failure rates. A common model collects more of them than a rare one that breaks more often.