The worst 2018 Mci D4000 problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
Recalls 4
Equipment adaptive/mobility: wheelchair lift/ramp
- What is wrong
- Motor Coach Industries (MCI) is recalling certain 2014-2018 D4000, 2013-2019 D4005, 2013-2023 D4500, 2013-2020 D4505, and 2021-2024 D45CRT coaches equipped with a Ricon wheelchair lift. The red beacon lighting on the Threshold Warning System (TWS) may not be bright enough. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 403, "Platform Lift Systems."
- Risk
- Beacons that do not provide proper illumination may be less visible to wheelchair lift users, increasing the risk of injury.
- Remedy
- MCI will work with Ricon to replace the TWS kits, free of charge. Owner notification letters were mailed March 21, 2024. Owners may contact MCI customer service at 1‑800‑241‑2947.
Recall number 24V073000 · Recall details
Electrical system
- What is wrong
- Motor Coach Industries (MCI) is recalling certain 2018 D4000, 2018-2020 D4005, D4000ISTV, 2017-2020 D4500, D4505, 2018-2021 J3500, 2017-2021 J4500, 2020 D4520, and 2018-2021 D45CRTLE motorcoaches. The Main Distribution Panel (MDP) located within the battery compartment contains a circuit board that may fail.
- Risk
- MDP circuit board failure can result in a fire or an unexpected vehicle shutdown, increasing the risk of a crash.
- Remedy
- MCI Service Centers will remove the MDP and install a new main disconnect and circuit breaker panel, free of charge. Owner notification letters were mailed November 12, 2021. Owners may contact MCI's customer service at 1‑800‑241‑2947. MCI's number for this recall is R21-010.
Recall number 21V748000 · Recall details
Fuel system, diesel: fuel injection system: fuel rail
- What is wrong
- Motor Coach Industries (MCI) is recalling certain 2017-2018 D4000, 2017-2019 D4005, D4000ISTV, D4505, 2017-2020 D4500, J4500, 2018-2020 D45CRTLE, and 2018-2021 J3500 vehicles. The sealing washer may not seat correctly in the pilot bore holes, allowing the high pressure fuel rail assembly to leak.
- Risk
- A fuel leak in the presence of an ignition source increases the risk of a fire.
- Remedy
- Dealers will inspect the rail threads, and replace the rail as necessary, free of charge. Owner notification letters were mailed on June 28, 2021. Owners may contact MCI customer service at 1‑800‑241‑2947. MCI's number for this recall is R21-009.
Recall number 21V364000 · Recall details
Electrical system: alternator/generator/regulator
- What is wrong
- Motor Coach Industries (MCI) is recalling certain 2018-2020 D4000, D4005, D4500, D4505 and D45CRTLE buses manufactured with electric cooling fans (E-fan) for the radiator and charge air cooler, Borg Warner 55SI model dual alternator configuration (with a sense stud and wire), and Parker Vansco Multiplexing Module (VMM) Multiplex system. A build-up of debris, corrosion, and/or water flow could cause a high resistance path to ground for the sense stud on the back of the alternator and cause the alternator to produce excessive voltage output, which may exceed the threshold limit currently programmed in the VMM and result in a loss of engine power and vehicle shutdown.
- Risk
- If the engine shuts down or loses power while the vehicle is in motion, this may increase the risk of a crash.
- Remedy
- MCI will notify the affected owners, and dealers will install a new application code in the Parker VMM multiplex modules increasing the overvoltage threshold limit, free of charge. The recall began July 23, 2020. Owners may contact MCI customer service at 1‑800‑241‑2947. MCI's number for this recall is SB 479.
Recall number 20V352000 · Recall details
Technical service bulletins for the 2018 Mci D4000 13
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- This bulletin is to provide instructions for clearing DTC 1067 FMI 7 (Pressure Sensor Not Calibrated) and...
- This bulletin introduces an optional product improvement to the A/C compressor drive system for coaches...
- Information to owners showing the proper procedure for checking the oil level in a BITZER HVAC compressor.
- Technical Service Information Bulletin describing the replacement of seating backrest attachment hardware...
- This Technical Instruction is a description of the inspections and cleaning procedures being recommended...
- This Instruction to Service (ITS) is a description of the inspections being recommedned by MCI due to the...
- This is an upgrade to Technical Service Information Bulletin TSIB 21-10 issued in January of 2022 which is...
- This Technical Service Information Bulletin describes interim inspection procedures required every 6000...
- This Technical Service Information Bulletin (TSIB) describes an update from Meritor for the bolt torque...
- This Technical Sevice Information Bulletion is to advise of a part number supersession of the coolant hump...
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Questions about the 2018 Mci D4000
Is the 2018 Mci D4000 reliable?
Owners have filed 0 complaints about the 2018 Mci D4000.
What is the most common problem with the 2018 Mci D4000?
There are not enough complaints to tell.
How many recalls does the 2018 Mci D4000 have?
4 recalls, covering equipment adaptive/mobility, electrical system and fuel system, diesel.
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