Q: Coolant leak fogging up window

asked by on

My car leaks coolant under the dash and the front window fogs up.

Hi. It sounds like your heater core has failed. Hot coolant flows through the heater core and the heat is moved into the passenger compartment by the blower motor. The heater core is located under the dash which is why you are finding coolant there. Due to it’s location, a failed heater core will also cause the front windows to fog up. I suggest you have a trained mechanic, such as one from YourMechanic, inspect the coolant leak and replace the damaged parts.

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
  1. Home
  2. Questions
  3. Coolant leak fogging up window

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: Radiator under pressure in cold engine and coolant disappearing.

You may have a clogged or pinched radiator which would cause the coolant to have a high pressure without relief. This would also make your car to overheat and cause the coolant to not circulate properly. I'd suggest having...

Q: Won't crank?

Hi there. From the description you have provided, there may be a poor connection at the battery terminals. The replacement battery may have already failed. The alternator may not be properly charging the battery. The starter may be drawing too...

Q: Blowers only work for ten minutes after starting car

There are several items that can tick under the hood of the vehicle. Fuel injectors click when they turn on and off, and the engine valve train can make a clicking noise when it becomes worn or the oil level...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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...