Skip the auto shop - Our mechanics make house calls

Q: Push button does not light up. All fuses are good good.

asked by on

My rear defroster is malfunction. All the fuses are good. The button switch does not light up.

My car has 100000 miles.
My car has an automatic transmission.

In addition to the fuse, there is also a relay for the rear defroster to make sure it is working properly (swap the front defroster relay for the rear one if the front is working properly as a check). If you’re getting power to the heater mesh which is "On" the surface of the glass, not inside the layers, most likely the mesh has been damaged.

It is silk-screened on there and damage from window-tint removal, or most any sharp object, can create an open circuit - and it will no longer function.

I recommend having a qualified professional inspect the relevant electrical systems so that this can be repaired properly.

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: Hey what is the part behind the idler pulley on a 2006 Honda Civic? There is a big crack and I want to know what part it is.

Hi there. Seems to be the tensioner to the idler pulley is cracked. Remove the drive belt from the engine and check the pulley tensioner and see if it can move around. I recommend seeking out a professional, such as...

Q: I am having issues with the defroster blowing cold air on the driver side

Hi there. There is a blend door issue on your ducting to your heating and air conditioning system. Check all of the blend doors and make sure that they are working. The blend door that is not working properly can...

Q: Reduce power engine - strange electrical behavior 2011 Chevrolet Impala

Hello - this problem is caused by electrical system faults which are unique to your year/make/model. Chevrolet has issued a technical service bulletin which addresses these symptoms (# 292284), which are related to your digital dash electronics. Discuss this problem,...

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 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...