Skip the auto shop - Our mechanics make house calls

Q: What is the photo sensor?

asked by on

What is the photo sensor?

The photo sensor is responsible for determining how dark it is outside, and thus whether or not the headlights should be on when in automatic mod. This sensor is located on the driver’s side of your dashboard. Be careful not to cover up the sensor, or it will think it is always dark, and the headlights will always be on.

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: What does the front fog lamp light mean?

The front fog lamp light is located on the instrument panel. When the front fog lamp light is illuminated, the front fog lamps are off. When the lamps are turned off, the front fog lamp light will disappear.

Q: Headlight assembly not working

On a vehicle such as a Porsche, it is likely that there is a control module for each of the headlight assemblies. A control module is like a computer that controls a particular system. If all of the lights on the driver side...

Q: What does the oil life feature do?

Your car’s message center lets you access a lot of information about the various systems on your car and their condition or status, including the remaining oil life. Press the Reset button to cycle through your options until you see...

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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...