Recall 12V086 covers 46 2012 Mci D4505, D4500, and D4000ISTV coaches for doors closing without warning. Repair is free at Mci.
Mci is recalling 46 2012 D4505, D4500, and D4000ISTV motor coaches equipped with a sedan-style entrance door and ACTIA multiplex system because the entrance door will close without warning after the park brake is set and ignition is off. That can injure people entering or exiting the bus; the Mci dealer repair will be free once available.
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What's wrong?
The entrance door on the 2012 Mci D4505, D4500, and D4000ISTV is a sedan style door controlled through an Actia multiplex system. That electrical control system coordinates body functions through switches, wiring, and control modules, so the door responds to operator commands instead of moving on its own.
In affected coaches, the control logic does not hold the entrance door open after the coach is shut down and parked. After the park brake is set and the ignition is turned off, the door closes 30 minutes later without a command from the driver. The issue is tied to the electrical door control behavior.
There is no warning sign before failure. An owner or operator should treat an unexpected door closing after shutdown as the defect behavior and have the free recall repair handled by an Mci dealer.
Who's affected?
D4505, D4500, and D4000ISTV buses are all listed with the electrical system component for this recall.
| 2012 Mci D4505 | electrical system |
|---|---|
| 2012 Mci D4500 | electrical system |
| 2012 Mci D4000ISTV | electrical system |
| Units affected | 46 |
A matching 2012 Mci D4505, D4500, or D4000ISTV model does not confirm inclusion. Check your VIN to confirm whether your specific bus is included.
What's the safety risk?
The entrance door can close without warning, increasing the risk of injury to people entering or exiting the bus. Keep passengers clear of the doorway until the door cycle is complete, and schedule the recall service soon. Repair will be free at any franchised Mci dealer once available.
What should I do?
- Check your VIN to confirm your 2012 Mci D4505, D4500, or D4000ISTV coach is included in this recall.
- Contact a franchised Mci dealer to schedule the free multiplex-system reprogramming that fixes the entrance door closing without warning.
- Bring the recall notice if Mci mailed one. If not, reference recall number 12V086 when you call.
- Keep people clear of the entrance door after the park brake is set and the ignition is turned off until the repair is complete.
What happens at the repair
The source remedy identifies the repair as a free multiplex system reprogramming. At the dealer, an Mci technician reprograms the Actia multiplex system that controls the sedan-style entrance door, so the door does not close without warning after the ignition is off and the park brake is set. Because the status supplied for this campaign is not marked available, confirm scheduling with the dealer before bringing the coach in. The dealer repair will be free once available.
Timeline
| March 5, 2012 | NHTSA published the recall |
|---|---|
| April 11, 2012 | Owner notification mailed |
Frequently asked questions
What is recall 12V086?
Recall 12V086 covers 46 2012 Mci D4505, D4500, and D4000ISTV motor coaches with sedan-style entrance doors and an ACTIA multiplex system. After the park brake is set and ignition is off for 30 minutes, the entrance door closes without warning. Mci reprograms the multiplex system for free.
What should I do if my 2012 Mci D4505, D4500, or D4000ISTV is on this recall?
Check your VIN to confirm your specific coach is included in recall 12V086. If it is, contact a franchised Mci dealer or Mci service support at 1-800-241-2947 to arrange the multiplex-system reprogramming. Reference recall 12V086 when you call. The repair is free.
Does the recall repair cost anything?
No. Federal recall law requires manufacturers to correct safety defects at no cost, and Mci's remedy for recall 12V086 is free of charge. The dealer or Mci service network reprograms the affected ACTIA multiplex system so the entrance door does not close without warning.
What warning signs should I watch for?
There is no warning before the entrance door closes. The recalled coaches have a programming issue that closes the entrance door 30 minutes after the park brake is set and the ignition is turned off. Keep people clear of the doorway until the free reprogramming is complete.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/12V086000 |
|---|---|
| Mci customer service | 1-800-241-2947 |
| NHTSA recall # | 12V086 |
| NHTSA recall # (full) | 12V086000 |
Source documents
-
Download Recall Investigation Document (PDF) (PDF) - Download Recall Document (PDF) (PDF)
- Download Owner Notification Letter (PDF)
- Download Defect / Noncompliance Notice (PDF) (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on June 2, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →