Skip the auto shop - Our mechanics make house calls

Q: Dim stays on about 10 seconds, then go completely out. So I have to quickly switch back to brigt

asked by on

I have a 2005 Ford Mustang. My head lights work just fine on bright, but when I turn them to dim, they stay on about 10 seconds, then go completely out (while driving) so I have to quickly switch back to my brights.

My car has 120000 miles.
My car's transmission is unknown to me.

A: There are a couple of things this could be ...

There are a couple of things this could be related to. First, you may want to have your alternator tested. This is your car’s onboard charging mechanism. If this is not operating correctly, it can lead to several problems, one of which you describe. Secondly, I would check the grounding and wiring harness to the lights themselves. This requires a bit of voltage testing with the use of a volt meter. If they are not getting the correct amount of voltage to them (which can be caused by old or corroded wiring, etc.), this can also lead to what you are describing. If you need help with this, I would recommend having an expert from YourMechanic come to your home or office to diagnose your lights and make the correct repair.

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

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Water it is not cycling to the motor is just staying in the radiator and then boiling over why is this and what can I do to fix it

Hi there. Assuming that the new water pump was correctly installed, it's more than likely that you have a blockage or obstruction of debris inside the heater core, the radiator itself or the cooling system hoses. The best way to...

Q: Differential noise

You first want to be sure it is really the differential failing as rear axle wheel bearings can also fail and make similar noises. If it is the differential, unfortunately the only option is to remove it and rebuild it....

Q: Will a drive shaft from a 93 chevrolet 1500 4×4 fit in a 05 chevrolet avalanche 2wd

The two driveshafts are most likely different lengths due to one being a 4wd and the other 2wd. You could lay them side by side and compare them to see if they are the same, but I doubt that this...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.