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NHTSA campaign 21V748000 · manufacturer recall R21-010

2017–2021 MCI D4000 and 8 other MCI models: electrical system recall

MDP circuit board failure can result in a fire or an unexpected vehicle shutdown, increasing the risk of a crash.

critical 2,455 vehicles affected 88% reported repaired

What was reported

Source: manufacturer filing, 49 CFR Part 573
Problem 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. Fix 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.

Reported to NHTSA Sep 24, 2021 by Motor Coach Industries, owners notified Nov 24, 2021.

Which vehicles are covered

Source: NHTSA campaign 21V748000
Model yearOn WhichTrim
2018 MCI D4000
2018 MCI D4000ISTV
2019 MCI D4000ISTV
2020 MCI D4000ISTV
2018 MCI D4005
2019 MCI D4005
2020 MCI D4005
2018 MCI D45 CRT LE
2019 MCI D45 CRT LE
2020 MCI D45 CRT LE
2021 MCI D45 CRT LE
2017 MCI D4500
2018 MCI D4500
2019 MCI D4500
2020 MCI D4500
2017 MCI D4505
2018 MCI D4505
2019 MCI D4505
2020 MCI D4505
2020 MCI D4520
2018 MCI J3500
2019 MCI J3500
2020 MCI J3500
2021 MCI J3500
2017 MCI J4500
2018 MCI J4500
2019 MCI J4500
2020 MCI J4500
2021 MCI J4500

None of the vehicles this campaign names has a page on WhichTrim: the catalogue covers the cars, trucks and SUVs the EPA certifies from 2016 on, and these vehicles fall outside it — older model years, or motorhomes, trailers, buses, motorcycles and chassis cabs the EPA does not rate. The campaign record above is complete as filed, and whether one specific vehicle is included is settled by its VIN. Other campaigns on vehicles without a page here →

How much of it has been fixed

Source: manufacturer quarterly report, 49 CFR 573.7
Reported repaired 88%

of the campaign

The final figure: the six quarters of reporting that 49 cfr 573.7 requires have closed.

This is the manufacturer's own cumulative count of vehicles it has inspected and repaired, divided by the vehicles the campaign covers. It files that count with NHTSA every quarter for six consecutive quarters, starting from the quarter in which owners were told a remedy was ready, and then the obligation ends — so a figure on an older campaign is where the count stopped, not where it stands today.

It rarely reaches 100%, and not because the work was not done. The same report asks manufacturers to count vehicles they could not reach at all — exported, stolen, scrapped, or simply never located — and those stay in the denominator. A low number means a lot of these vehicles are still out there unrepaired; it does not tell you which ones.

The federal paperwork

Source: nhtsa.gov

Filed documents

Check one specific vehicle

A recall applies to a build range, so year, make and model cannot settle it. NHTSA checks a VIN against the manufacturer's own list and tells you whether the repair is still outstanding on that vehicle.

NHTSA VIN recall lookup →

Campaign 21V748000 · the manufacturer calls it R21-010

Own one, or run a fleet? Recall Watch checks each VIN against every new NHTSA campaign and emails you when one lands, this one's expansions included. Or take a free one-line alert by model year.

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Common questions

Source: NHTSA, 49 CFR Part 573

Is R21-010 the same recall as 21V748000?

Yes. R21-010 is the number Motor Coach Industries uses for this campaign in its own paperwork and in the letter it sends owners. 21V748000 is the number NHTSA files it under. One recall, two references — dealers and service departments generally quote the manufacturer's.

Does this recall repair cost anything?

No. Federal law requires the manufacturer to remedy a safety defect or a compliance failure at no charge, for vehicles up to 15 years old measured from the date of first sale. A dealer that asks you to pay for a recall repair is in the wrong.

How do I know whether my vehicle is included?

By VIN, not by model year. The manufacturer files a build range with NHTSA and only vehicles inside it are covered, so two identical-looking cars from the same year can differ. NHTSA's own lookup checks a VIN against the manufacturer's list.

What if the repair is not available yet?

It happens, and often. Manufacturers must notify owners when a defect is found even if the parts or the software are not ready, then notify them a second time once the remedy exists. The remedy filed for this campaign is described above.

What did the manufacturer say was wrong?

The problem, risk and fix quoted on this page are the manufacturer's own words as filed with NHTSA under 49 CFR Part 573. WhichTrim does not paraphrase them.

Who started this recall?

NHTSA's record credits the manufacturer. A recall can begin with the manufacturer's own testing, with a defect investigation, or with a compliance test against a Federal Motor Vehicle Safety Standard.