Skip the auto shop - Our mechanics make house calls

Q: How does the rear defroster work?

asked by on

How does the rear defroster work?

A: Your Altima is equipped with a front and re...

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.

Tips

  • 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 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: Helicopter noise, steering wheel vibration. Had CV axles and wheel bearing replaced, but the noise is still there. What's wrong?

Hello, thanks for writing in. This sounds like you have tires that are not wearing correctly due to the alignment is not correct or has not had rotations and the tires have high ridges on the tread. Have the tires...

Q: Crankshaft position sensor. 2012 Chrysler 200

Hey there. The crank sensor is at the rear of the motor. You have to remove the heat shield to get access to the sensor. If you need assistance with this repair, an expert technician from YourMechanic can come to...

Q: Does the defroster use the air conditioning system in my 2012 Ford Escape

Hello. Yes, the defroster does use the air conditioning to defog the front windshield. If the a/c system is not functioning then the system will not work as designed. If you are having issues with it, consider YourMechanic, as a...

Related articles

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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...