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.

A: In addition to the fuse, there is also a re...

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: Gear shift lever not working

Hi there. You can be experiencing 1 of 2 things. Your vehicle's brake switch which indicates that the brake is pressed allowing you to shift gears may be malfunctioning. These typically deteriorate overtime causing the shifter to be "stuck." Secondly...

Q: How do you defog or defrost the windows?

Your Accord includes both a front and rear defogger/defroster. Whether your windshield is fogging up on a rainy day, or your rear glass is covered by frost, using both systems is easy. Here’s what you need to do: Front Defogger/Defroster...

Q: Check tire pressure light on, trunk unlocked warning

Hi there. Most of the time this is caused by a loose battery or ground connection. I usually start by checking the battery terminal connections for tightness and corrosion. I then check the ground connections for the same problems. ...

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 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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.