Skip the auto shop - Our mechanics make house calls

Q: Rear right turn signal/brake light not flashing properly

asked by on

My car uses the outmost 2 of the 3 bulbs of each rear brake light as the turn signal. On the rear right side, the second turn sigal bulb (the middle of the 3) comes on when I turn on my headlights, but does not flash when I press the brakes, and doesn't flash when I turn on my right turn signal. If the headlights arent on, it wont come on at all. Is this simply an issue with the bulb, or something else?

My car has 119900 miles.
My car has an automatic transmission.

A: Hello there, thank you for asking about you...

Hello there, thank you for asking about your 2003 Ford Mustang. The bulb is a dual filament bulb. One filament is for tail lights and the other for brake lights. I recommend removing and replacing the bulb first, then see if it works. If you need to replace a brake light bulb or inspect why your brake light isn't working, you can have a certified technician from YourMechanic replace it for you.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Should I replace or clean the catalytic converter?

Hey there. The Check Engine Light can set if the catalyst efficiency is below threshold. There will be no visible symptoms at all, or change in engine performance, because the recorded "low efficiency" can simply mean that more pollutants are...

Q: Motor swap

The two base engines are similar but not the same. The sensors used will be different. The ignition system is different. The intake system is different. You should check both engines firsthand and compare them to see what I mean....

Q: Brakes have gone out in 2001 GMC Jimmy

Hello. The brake warning light usually indicates a fault in the hydraulic portion of the braking system. Start with checking the fluid level if it's low, but if not empty, top off the fluid and recheck it in a couple...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.