Skip the auto shop - Our mechanics make house calls

Q: Antifreeze leaking into vehicle

asked by on

Antifreeze is leaking into the passenger's side floorboard, and is leaking underneath the jeep.

If antifreeze is entering the cabin, the problem is the heater core or piping to the heater core. The heater core is inside your dashboard and if it is leaking, antifreeze will run downward onto the floorboards and eventually leak out of the vehicle. I recommend having a trained technician pressure test the cooling system to see where exactly the coolant is leaking. I have seen the piping to the heater cores corrode and leak on Jeep Commanders. If so, the repair can be made without removing the entire dashboard.

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!
  1. Home
  2. Questions
  3. Antifreeze leaking into vehicle

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 is leaking

If your radiator is leaking then it needs to be replaced. Hopefully the engine never got too hot when this loss of coolant occurred. Once the radiator is replaced I would typically do a cooling system pressure test to make...

Q: Need help finding wiring diagram for DLC

Hi there. Unfortunately, we are not able to help you here - as this is something that even a professional mechanic would have to reach out to a Dodge dealership or download from a Dodge website to obtain. That is...

Q: Car won't start after stopping it at gas station

There are a couple of possibilities. Jeep has a TSB out concerning a faulty front control module, but this will also generally be accompanied by the windshield wipers not working as well when the no start occurs. It only affects...

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.