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Ford Mustang low brake fluid warning light may not come on

NHTSA campaign 25V689000 · Reported 2025-10-10 · Ford Motor Company

high How serious is it? About this label

This one touches your brakes — the notice does not say to stop driving, but weaker braking with no warning is a real crash risk, so schedule it promptly.

What's wrong, in plain English

Some 2021-2023 Mustangs that were repaired under an earlier recall were not fixed correctly. On these cars, the sensor that watches your brake fluid level may fail to turn on the dashboard warning light when the fluid gets low. That means you could keep driving with low brake fluid and never be told, and low fluid makes the brakes work less well. Ford says these cars do not meet the federal brake system rule. A dealer will reload the correct software.

What you should do

1. Look up your VIN at nhtsa.gov/recalls (Mustang VINs for this recall are searchable as of November 17, 2025). 2. Call your Ford dealer or Ford customer service at 1-866-436-7332 (recall 25C55) for an appointment. 3. Have the dealer update the body control module software — free of charge.

Affected vehicles (2)

Who to contact

Ford — official Ford recall lookup

Customer service: 1-866-436-7332

Any franchised dealer for the brand can do the repair. Phone numbers are taken from manufacturer sites and recent NHTSA notices; if one has changed, the number in your own recall letter is the one to use.

The bigger picture

Official notice

Component
ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM
Summary
Ford Motor Company (Ford) is recalling certain 2021-2023 Mustang vehicles repaired incorrectly under recall number 23V727. The brake fluid level sensor may not activate the visual warning indicator when the brake fluid is low. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 135, "Light Vehicle Brake Systems."
Safety risk
Without a low brake fluid warning light, the vehicle may be driven with low brake fluid, reducing braking performance and increasing the risk of a crash.
Remedy
Dealers will update the body control module software, free of charge. Owner notification letters were mailed December 11, 2025. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 25C55. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning November 17, 2025.

Verify your specific vehicle by VIN at nhtsa.gov. Recall repairs are free of charge by law.