Q: How does the rear defroster work?

asked by on

How does the rear defroster work?

Your Altima is equipped with a front and rear defroster. While the front defroster is tied into your car’s air conditioning and heating system, and operated from the air

conditioner control panel, the rear defroster is not.

To activate the rear defroster, locate the button on the dash that says “RR” and shows the defroster image. Press this button and the back glass will begin defrosting. Note that if your car is equipped with side view mirror defrosters, this will also activate those.


  • The rear defroster is electronic, and made up of wires in the glass of the back window. However, the top rows are not part of this system – they’re the car’s antenna. Don’t worry if that area doesn’t defrost as quickly as the rest of the window. This is normal.

  • The rear defroster will turn off by itself after 15 minutes.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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
  1. Home
  2. Questions
  3. How does the rear defroster work?

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: 2003 nissan maxima , new battery, new alternator. I drove the car about 20 minutes to work, I turned it off and came back out abou

You may have a failing voltage regulator that could be allowing the alternator to supply too much or too little amperage to the battery resulting in the battery never maintaining a consistent charge as it is designed to. The voltage...

Q: Q: How do I lock the doors with the Intelligent Key?

The Intelligent Key allows you to lock the doors of your vehicle without actually using the key. All you need to do to lock the doors is exit your vehicle, and make sure all of the doors are closed. Then,...

Q: How do you turn on the rear defogger and heated mirrors?

Your car is equipped with both a front and rear defogger. The front defogger is tied into your air conditioning system, but the one in the back is different (and uses a different control). If your car is also equipped...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
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...