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Ford Mustang Brake Warning Light Hides Low Brake Fluid

NHTSA campaign 24V496000 · Reported 2024-06-28 · Ford Motor Company

high How serious is it? About this label

Serious, because brake trouble could go unnoticed and lead to a loss of braking; the notice does not tell owners to stop driving, but have it fixed soon, especially if your brake light is on.

What's wrong, in plain English

After a dealer updated the computer that runs your Mustang's electrical features, the brake fluid sensor may have been left set up wrong. The result is a brake fluid warning light that stays lit all the time. Because the light is always on, you would not notice if your brake fluid actually ran low. Low brake fluid can make the brakes stop working. The dealer will reload the correct software so the light works normally again.

What you should do

1. Check your VIN at nhtsa.gov/recalls to see if your 2024 Mustang is affected. 2. Contact a Ford dealer for the body control module software update, Ford recall number 24S43. 3. The update is free; Ford customer service is 1-866-436-7332.

Affected vehicles (1)

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
SERVICE BRAKES, HYDRAULIC:BRAKE FLUID LOW WARNING:SWITCH/SENSOR/FLOAT
Summary
Ford Motor Company (Ford) is recalling certain 2024 Mustang vehicles. The brake fluid level sensor may not be properly configured after a Body Control Module (BCM) service update, resulting in a constantly illuminated brake fluid level warning light that can conceal a low brake fluid condition.
Safety risk
An undetected low brake fluid condition can lead to a loss of braking function, increasing the risk of a crash.
Remedy
Dealers will update the body control module (BCM) software, free of charge. Owner notification letters were mailed July 12, 2024. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 24S43.

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