2015 Ford Mustang · symptom sheet

Tail lights or brake lights fail

34owner reports
35,000median miles
$500median quote
0involved a crash

Newest report Oct 25, 2024 · checked Sep 19, 2026

42 of the 435 complaints on this car are about the exterior lighting. 34 of those describe tail light failure.

Tick what matches of 34 reports

water or condensation inside the lens

one side went out first

the whole assembly needed replacing

it happens with LED lights specifically

other drivers cannot tell I am braking

it comes and goes intermittently

What got replaced

Owners who name the part that was replaced mention the tail light assembly (9 reports) and the LED module (8 reports).

Recalls and investigations

No recall on the exterior lighting covers the 2015 model year as of Sep 19, 2026.

NHTSA investigations into the exterior lighting on the Mustang

PE91-078opened May 28, 1991

Exterior Lighting · model years 1987 to 1988

Headlamp assembly failure. Closed sep 23, 1991.

NHTSA summary

There is no summary currently available

None of these investigations covers the 2015 model year.

What owners paid

6 of the 34 reports quote a price. Each dot is one quote. The middle half runs $200 to $900.

$200$500$900

$0k$2k$4k$6k$8k

When it happens

The middle half of failures fell between 24,060 and 63,000 miles, from the 22 reports that gave a mileage.

118

719

920

1321

424

What owners wrote

“The brake pedal stop bumper in my car disintegrated in the middle of the day and fell off. The brake lights do not turn off anymore and the vehicle can be started and shifted without needing to press the brake. I found a recall # 22S02 for this exact issue but my vehicle is not covered by it (assuming due to region). The vehicle has not been inspected yet.”
Filed Jun 14, 2024

“Brake light switch pad broke , So the car thinks the brakes are on so it goes into "limp mode" and it starts turning off assist modes.”
Filed Jul 24, 2021

“Brake pedal pad failed, causing car to suddenly brake even though brakes were not being applied. Ford Dealership recommended replacing brake light switch assembly. Brake lights stayed on even after the car was turned off. Had to disconnect the battery to prevent drain.”
Filed Jul 22, 2021

“I'm on highway going 70mph and all the sudden my car slows down drastically to about 35mph and won't accelerate any higher. I almost caused an accident. After I got home I also noticed my brake lights would not go off, even after the car was off for a bit. I had to undo the battery.”
Filed Jul 13, 2021

Should you keep driving it?

This page can't tell you that. 0 of 34 reports involved a crash. Owners who file are the ones who had a bad experience, and nobody checks their reports. If the problem affects steering, braking, power or a fire risk, treat it as a safety fault and have it inspected before a long or high-speed drive.

File your own report with NHTSA. Complaint counts are how a problem gets an investigation.