Recall 17V507 affects 67 2018 BMW M4, 430I, and 440I vehicles for front seat belt retractor defects. Repair is free at any franchised BMW dealer.
BMW is recalling 67 2018 M4, 430I, and 440I convertibles because the Emergency Locking Retractors in the front seat belt assemblies were built with incompatible locking mechanism housings. In a crash, that defect can keep the seat belt from restraining the occupant and increase injury risk; BMW dealers will complete the repair free of charge.
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What's wrong?
The front seat belt in affected 2018 BMW M4, 430I, and 440I convertibles uses an Emergency Locking Retractor, or ELR. That retractor lets the belt move during normal seating and driving, then locks the belt when vehicle movement signals a hard stop, sharp cornering, or sudden force. The front belt depends on that locking mechanism housing matching the retractor assembly.
In these vehicles, the supplier built some front seat belt retractors with incompatible housings inside the vehicle-sensitive locking mechanism. That mismatch can keep the emergency locking function from working as designed during braking or cornering. If the belt does not lock at the right moment, the occupant is not held back the way the restraint system was designed to work.
There is no warning sign before failure. The belt can look normal, pull out normally, and retract normally, even though the emergency locking function is not dependable.
Who's affected?
The M4, 430I, and 440I scopes all point to the same front seat belt component.
| 2018 BMW M4 | seat belt |
|---|---|
| 2018 BMW 430I | seat belt |
| 2018 BMW 440I | seat belt |
| Units affected | 67 |
| Field incidents | NHTSA has logged no field incidents to date. |
A matching 2018 BMW model does not guarantee inclusion. Check your VIN to confirm whether your specific car is included in this recall.
What's the safety risk?
An incompatible vehicle-sensitive locking mechanism can keep the seat belt from restraining the front-seat occupant during a crash, increasing injury risk. There is no listed warning sign before a crash, so confirm your VIN and schedule the inspection soon if your vehicle is included. Repair is free at any franchised BMW dealer.
What should I do?
- Check your VIN to confirm your 2018 BMW M4, 430I, or 440I is included in this recall.
- Contact your nearest franchised BMW dealer to schedule the free front seat belt inspection and assembly replacement if the locking retractor housing is incompatible.
- Bring the recall notice if BMW mailed one. If not, reference recall number 17V507 when you call.
- Ask the BMW dealer whether to limit front-seat passenger use until the inspection or repair is complete.
What happens at the repair
At the dealer, a BMW technician inspects the front seat belt assemblies and replaces any assembly with an incompatible vehicle-sensitive locking mechanism housing. The recall repair is free, with parts and labor covered. BMW has a general reimbursement plan on file for owners who already paid for a related front seat belt repair. Bring repair invoices and payment documentation to the service desk, or contact BMW customer service, so the claim can be reviewed under that plan.
| Reimbursement | Reimbursement available |
|---|
Timeline
| August 16, 2017 | NHTSA published the recall |
|---|---|
| August 16, 2017 | Dealer notification began |
| October 9, 2017 | VIN-searchable in NHTSA's database — Check your VIN to see whether this recall applies to your specific vehicle. |
| October 9, 2017 | Interim owner notification (was planned for this date) |
| October 13, 2017 | Owner notification mailed |
Frequently asked questions
What is recall 17V507?
Recall 17V507 covers 67 2018 BMW M4, 430I, and 440I convertible vehicles with front seat belt emergency locking retractors that were built with incompatible vehicle-sensitive locking mechanism housings. BMW dealers will inspect the front seat belt assemblies and replace them for free when needed.
What should I do if my 2018 BMW M4, 430I, or 440I is on this recall?
Check your VIN to confirm your specific vehicle is included in recall 17V507. If it is, contact a franchised BMW dealer to schedule the front seat belt inspection. Reference recall number 17V507 when you call. The inspection and required replacement are free.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost, and BMW's remedy says dealers will inspect and, when needed, replace the front seat belt assemblies free of charge at any franchised BMW dealer.
What is the safety risk?
The risk is that the front seat belt fails to restrain the occupant in a crash. BMW traced the issue to an incompatible vehicle-sensitive locking mechanism in the emergency locking retractor, which increases injury risk if the vehicle is involved in a crash.
What if I bought this BMW used?
The free recall repair still applies. Recalls follow the vehicle, not the first owner. Check your VIN to confirm whether your specific 2018 BMW M4, 430I, or 440I is included, then give recall number 17V507 to the BMW dealer service desk.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/17V507000 |
|---|---|
| BMW customer service | 1-800-525-7417 |
| NHTSA recall # | 17V507 |
| NHTSA recall # (full) | 17V507000 |
Source documents
-
Download Misc. Document (PDF) - Download Recall Investigation Document (PDF) (PDF)
- Download Owner Notification Letter (PDF)
- Download Owner Notice (PDF)
- Download Recall Report (PDF)
- Download Quarterly Report (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 25, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →