Skip the auto shop - Our mechanics make house calls

Q: Trouble with exterior lights - 2010 Mercury Milan

asked by on

I’m having trouble with the exterior lights. There are 3 total fuses for my car: high beams, low left beam, and low right beam. The low beam fuses, in the manual, are #7 & #8; high beam: #17. The #7 fuse is not there and my headlights are not working. I replaced the driver side bulb, which had been broken in an accident, but before doing that, the passenger bulb (which had been intact and working), then stopped turning on. When I turn the switch on past the parking light selection the parking lights go out, however the headlights do not turn on. Since the #7 fuse was not originally there and was not the cause since it previously worked, is it needed -- and also, why won’t the lights turn on?

Hello, thanks for writing in. It sounds like you will need to replace both bulbs and all three fuses. The price of bulbs and fuses is so cheap most of the time, that the amount of time to test each component and inspect for errors, is usually not worth it. Driver safety and properly functioning headlights are very critical and we never recommend operating the vehicle at night without them 100% functional. Replacing all the fuses (and yes, absolutely replace #7) and bulbs should solve the issue. If the problem continues, you will want to start checking the power supply and then the switch. This can be done with a multi-meter. If you’d like to have this checked for you, a certified professional from YourMechanic can come to your home or office to diagnose your headlight issue 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

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・Fair and transparent pricing

Get a quote

What others are asking

Q: I think my four wheel drive is locked. What will cause this issue?

Hi there. There is an actuator on the front axle that engages the front axle to make the 4WD work. Your transmission is an all wheel drive transmission and the actuator is what disengages the front axle so the vehicle...

Q: I need a starter replaced on a 2010 Mercury Milan. How much will it cost?

Hi there. In order to provide you with an accurate quote, we'll need you to fill out a quote request for a starter replacement so we can gather additional information about your location and vehicle.

Q: Car not starting, though fuses and plugs okay.

Does the engine crank? There are many reason why a car will crank but not start. Your engine will not start unless it has fuel, air, spark, and compression. If any one of the four components are missing you will...

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...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...