Q: How does the rear window defroster work?

asked by on

How does the rear window defroster work?

Your car is equipped with both a front and rear defroster. While the front defrost is tied into your air conditioning system and uses the fan, the rear defrost is different. Here’s what you need to know to work it:

  1. Turn the engine on.
  2. Push the Rear Defrost button.
  3. The system will defrost the rear glass and then turn off after a set period of time.

Tips

  • You can turn the rear defrost off yourself by pushing the button again.

  • The rear defrost will only work if the engine is running.

  • The rear defrost will turn off if you cut off the engine, or if the system detects low voltage in the battery.

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

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!
  1. Home
  2. Questions
  3. How does the rear window 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: How do you replace the battery in the remote?

Your car’s remote uses a battery to transmit the signal needed to lock or unlock your doors, arm the alarm or set off the Panic button. As with all batteries, this one will eventually die and need to be replaced....

Q: What does the air bag Light mean on the dash?

Your car has a number of air bags throughout the cabin designed to work with the seat belts to provide better safety for you and your passengers. The air bag Light in the dash is a readiness indicator. It should...

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

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...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.