AI Damage2018 MCI D4500: common problems
The maker issued 22 service bulletins for this year. Details by component below, with sources.
Key figures
- Technical service bulletins (TSB)
- 22
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Equipment | 0 | 0 | 10 |
| Electrical system | 0 | 0 | 9 |
| Engine | 0 | 0 | 3 |
| Service brakes | 0 | 0 | 2 |
| Engine and cooling | 0 | 0 | 1 |
| Fuel/propulsion system | 0 | 0 | 1 |
| Fuel system | 0 | 0 | 1 |
| Powertrain | 0 | 0 | 1 |
| Seats | 0 | 0 | 1 |
| Steering | 0 | 0 | 1 |
| Suspension | 0 | 0 | 1 |
| Other | 0 | 0 | 2 |
Comparison
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Service brakes. Pedal feel, ABS operation, leaks, discs and hoses.
- Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- This bulletin is to provide instructions for clearing DTC 1067 FMI 7 (Pressure Sensor Not Calibrated) and…
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…
- This bulletin introduces an optional product improvement to the A/C compressor drive system for coaches…
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…
- Instructions for LV Battery Replacement Procedure (Vanner Equipped coaches)
- Instructions to remove DEF sensor bypass calibration from engine ECM and new sensor installation AR -…
Instructions to remove DEF sensor bypass calibration from engine ECM and new sensor installation AR - 18inch DEF tank CA emissions
- This TSIB is to inform customers the recommended steering axle cleaning/greasing instructions to prevent…
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…
- Information to owners showing the proper procedure for checking the oil level in a BITZER HVAC compressor
- Instructions to change the refrigerant compressor pulley from a single groove to a double groove to…
- Technical Service Information Bulletin describing the replacement of seating backrest attachment hardware…
Technical Service Information Bulletin describing the replacement of seating backrest attachment hardware with the addition of a mechanical lock nut on specifically equipped buses manufactured prior to model year 2020.
- This Technical Instruction is a description of the inspections and cleaning procedures being recommended…
This Technical Instruction is a description of the inspections and cleaning procedures being recommended by MCI due to the parts shortages which are impacting the repair inspections associated with NHTSA Recall…
- This Technical Instruction describes how to upgrade the Delco alternator indicator lamp ring terminal
- This Instruction to Service (ITS) is a description of the inspections being recommedned by MCI due to the…
This Instruction to Service (ITS) is a description of the inspections being recommedned by MCI due to the parts shortages which are impacting the repair instructions associated with NHTSA Recall 21V-748. These are the…
- This is an upgrade to Technical Service Information Bulletin TSIB 21-10 issued in January of 2022 which is…
This is an upgrade to Technical Service Information Bulletin TSIB 21-10 issued in January of 2022 which is specific to buses operating in severe duty and or corrosive environments. These bulletins have been issued to…
NHTSA lists 22 bulletins for this year; the 12 newest are shown here.
Other years of this model
Questions and answers
What are the most common problems with the 2018 MCI D4500?
There are no owner complaints in the NHTSA data for this year; the data comes from 22 manufacturer service bulletins.
How many service bulletins (TSB) were issued for the 2018 MCI D4500?
NHTSA lists 22 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2018 MCI D4500 from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2018 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-04.