Skip the auto shop - Our mechanics make house calls

Q: Heated windshield not working.

asked by on

The heated rear windshield is not working. Also, when I take the car through the car wash, the passenger's side floorboard gets flooded.

It appears that you may actually be experiencing two different issues with your Mustang. I do not believe the two are related so we will look at each concern independently. In regards to the rear window defroster, it is quite possible that you may have just blown a fuse.

If it can be verified that the fuse is fine, then the next place we will want to look will be the lines on the rear windshield glass. Those lines are actually heat wires hooked up to the electrical system. When power runs through them, they heat up, remove the fog from the window. Over the years these wires can lose proper connection. This is often through the abuse of the sun beating down on them or possibly an object made contact and created a break in the connection. Due to this failure being an electrical issue, I highly recommend enlisting the help of a certified mechanic to diagnose and repair this window issue to avoid any other electric failure.

In regards to the passenger side flooding while going through a car wash, I have actually found this to actually be quite common. It is found in the newer Mustangs and the fix for this is simple. There are grommet seals that go under the windshield and these seals hold the cowl (a plastic piece found under the front windshield which covers the wiper motor system as well as housing the fresh air for inside the cabin of the vehicle) in place. What you are experiencing is when these seals go bad. Ford sells an updated seal to correct this issue and the new seals require heat to be applied for a proper seal. While the repair itself is not too difficult, it does involve removing the cowl to gain access. A certified mechanic can also assist you with this procedure and get your Mustang’s defroster and seal concerned taken care of quickly.

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

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: Whenever I press on the gas there is a rattling in what sounds like the front half of the car.

Loud metallic rattles are not uncommon as vehicles age. That the noise did not start until some exhaust repairs leads to the same spot. An exhaust heat shield. Some exhaust components have a heat shield welded to them. In other...

Q: Previous owner had tuner but lost it

The new tuner will just save the program you have now and upload a new one. You can never get the factory program again if the tuner is lost, unless a dealer reprogrammed the computer with an update calibration file....

Q: I am wondering if you can help point me in the right direction on what's wrong with my car.

Hi there: There could be multiple issues going on with your 2006 Ford Explorer, or perhaps something very simple that can be easily fixed. If you're hearing a loud noise and the engine seems to be robbing of power, it's...

Related articles

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...
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.