Skip the auto shop - Our mechanics make house calls

Q: How do I use the rear window defogger and side view mirror defoggers?

asked by on

How do I use the rear window defogger and side view mirror defoggers?

Your car is equipped with a rear window defogger, and it may be equipped with side view mirror defoggers (optional equipment). They’re both operated in the same way:

  • Press the rear defogger button to turn both systems on. They will stay on for about 15 minutes and then automatically turn off.

Rear window and mirror defoggers do not operate in the same way as front window defoggers. The front window uses the vehicle’s HVAC system, whereas the other two defoggers use an electric grid.

Tips

  • If you have a manual air conditioning system, the rear window defogger button is located on the fan control switch.

  • If you have an automatic air conditioning system, the rear window defogger button is located to the left of the dual button on the right side of the air conditioning control panel.

  • You can only use the defoggers if the key is turned to 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!
  • Home
  • Questions
  • How do I use the rear window defogger and side view mirror defoggers?

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: Oil Light came on and car stopped

Unfortunately, if the Oil Light did come on, it is possible that the engine oil was low, and the engine was oil-starved. The oil should be drained in a clean pan, and examined to see if there are metal particles...

Q: Car audio is not working

Hi, other owners have had similar issues with their audio. On closer inspection, the amplifier had usually blown out and needed to be replaced. I would recommend taking this to the dealership as it may be covered by warranty.

Q: Fan wont blow out top vents for defrost.

Hi there. Check the blend doors to the vents and see if they move when the switch is turned. If they do not move, then check for a vacuum hose to the blend door actuator. If there is no vacuum...

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...
What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...