---
title: "MCI D4020 recall: Hazard-light reminder may stay dark"
description: MCI D4020, D4020ISTV, D4520 and related coaches may lack an
  instrument-panel reminder for active hazard warning lights; MCI will update
  the software free of charge.
author: RecallWire Safety Desk
published: 2026-10-18T00:00:00.000Z
updated: 2026-10-18T00:00:00.000Z
editorial_status: reviewed
canonical_url: https://recallwire.news/articles/safety-recall-26v645000/
sources_checked: 2026-10-18T15:46:32.545Z
article_type: recall
manufacturer: MCI
manufacturers:
  - MCI
models:
  - D4020
  - D4020ISTV
  - D4520
  - D45CRT
  - D45CRTE
  - D45CRTELE
  - D45CRTLE
vehicles:
  - manufacturer: MCI
    model: D4020
    years:
      - 2026
  - manufacturer: MCI
    model: D4020ISTV
    years:
      - 2026
      - 2025
      - 2024
  - manufacturer: MCI
    model: D4520
    years:
      - 2026
      - 2025
      - 2024
      - 2023
      - 2022
      - 2021
      - 2020
      - 2018
  - manufacturer: MCI
    model: D45CRT
    years:
      - 2026
      - 2025
      - 2024
      - 2023
      - 2022
      - 2021
  - manufacturer: MCI
    model: D45CRTE
    years:
      - 2024
  - manufacturer: MCI
    model: D45CRTELE
    years:
      - 2023
      - 2022
      - 2021
  - manufacturer: MCI
    model: D45CRTLE
    years:
      - 2026
      - 2025
      - 2024
      - 2023
      - 2022
      - 2021
      - 2020
      - 2019
      - 2018
campaigns:
  - 26V645000
campaign: 26V645000
affected: 683
source_agency: NHTSA
---

# MCI D4020 recall: Hazard-light reminder may stay dark

## Summary

MCI D4020, D4020ISTV, D4520 and related coaches may lack an instrument-panel reminder for active hazard warning lights; MCI will update the software free of charge.

## At a glance

- Manufacturer: MCI
- Vehicle: D4020
- NHTSA campaigns: 26V645000
- Potentially affected: 683

> Official recall facts are attributed to NHTSA. The surrounding summary and owner guidance are RecallWire editorial work. A campaign or model match does not confirm an individual vehicle’s recall or repair status; use the [official NHTSA VIN lookup](https://www.nhtsa.gov/recalls).

Operators of the listed MCI coaches should pay attention to a hazard-warning indication that may not appear when the master run switch is off. The missing reminder can leave exterior hazard lights activated after they are no longer needed.

## What the official recall record says

### MCI: D4020, D4020ISTV, D4520 and other models

The instrument-panel indicator may not illuminate while the hazard warning lights are on and the master run switch is off. Without that reminder, a driver may not realize the exterior hazard lights remain active and may leave them on unintentionally, which can confuse other drivers and increase crash risk. MCI will update the software free of charge.

**Owner information from the official record**

- **Owner notices:** Owner notification letters are expected to be mailed November 24, 2026.
- **Manufacturer contact:** Owners may contact MCI customer service at 1-800-241-2947.

**Official record**

- **NHTSA recall ID:** 26V645000
- **Vehicles listed:** MCI D4020 (2026); MCI D4020ISTV (2026, 2025, 2024); MCI D4520 (2026, 2025, 2024, 2023, 2022, 2021, 2020, 2018); MCI D45CRT (2026, 2025, 2024, 2023, 2022, 2021); MCI D45CRTE (2024); MCI D45CRTELE (2023, 2022, 2021); MCI D45CRTLE (2026, 2025, 2024, 2023, 2022, 2021, 2020, 2019, 2018)
- **Potentially affected:** 683
- **Components:** ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; EXTERIOR LIGHTING:HAZARD FLASHING WARNING LIGHTS
- **Report received:** October 5, 2026
- **Owner notification:** Owner notification letters are expected to be mailed November 24, 2026.
- **Defect:** Motor Coach Industries (MCI) is recalling certain 2018-2026 buses. Please see the complete list of models above. The instrument panel indicator light may not illuminate when the hazard warning lights are on and the master run switch is in the 'Off' position. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 108, "Lamps, Reflective Devices, and Associated Equipment."
- **Safety consequence:** Without the illuminated reminder, the driver may fail to turn off the exterior lights when no longer needed. Hazard warning lights that remain activated unintentionally can confuse other drivers, increasing the risk of a crash.
- **Remedy:** MCI will update the software, free of charge. Owner notification letters are expected to be mailed November 24, 2026. Owners may contact MCI customer service at 1-800-241-2947.

## What owners should do next

Use the official campaign information to arrange the listed software remedy through MCI or an authorized dealer.

A headline cannot confirm whether a particular vehicle is affected. Use the [official NHTSA recall lookup](https://www.nhtsa.gov/recalls) with the vehicle identification number and contact the manufacturer or an authorized dealer for vehicle-specific guidance.

## Sources

- National Highway Traffic Safety Administration. Safety Recall Report: Campaign 26V645000. Report received 2026-10-05.

---

Source: RecallWire
Canonical URL: https://recallwire.news/articles/safety-recall-26v645000/