Q: Antifreeze leaking into car.

asked by on January 11, 2016

Antifreeze coming in the passenger's side floorboard near glove compartment. The car might need a new heater core or a hose replaced.

Coolant is leaking Inspection $94.99 - $114.99 Get a Quote
Heater Hoses Replacement $151.67 - $852.99 Get a Quote

Your presumption sounds exactly right to me. The only time that coolant enters the passenger compartment is through the heater core. If you have coolant leaking into your interior it is under no uncertainty that your heater core is leaking. I would recommend getting this replaced as soon as possible to prevent any future engine damage as well as to get your heater functioning properly for the winter months.

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Accidentally put diesel in a gasoline engine.
We recommend a full drain for any amount of contamination, but if you have put in 2 litres or less of diesel in a petrol car (less than 5% of a full tank) and then fill up your remaining tank...
Engine will not start.
Just because the horn still works doesn't mean your battery has enough "juice" to turn over the engine. I suggest you have a qualified technician test your starting and charging system. (https://www.yourmechanic.com/services/car-is-not-starting-inspection) Since your vehicle won't start, calling YourMechanic would...
Engine vibrates alot.......whole car vibrates
Hi there. This is a mount problem. It is very common for the engine mounts (https://www.yourmechanic.com/services/engine-mount-replacement) to fail on a Mazda Premacy and still visually look good. I always remove them to physically check them for damage and wear. It...
Truck won't start
If this is the factory light on the dash that says "theft" and is blinking fast, then your theft system is activated. You may need to try another key first after locking all of the doors and waiting a half...
Car Stalls in 2nd Gear after Starting
Test/evaluate shift solenoid(s) on transmission. You can probe for resistance on solenoid coil through the wiring harness but even if within spec, solenoid mechanism could still be sticky or intermittent. Faulty solenoids are a common cause of this type of...
Vacuum hose to the charcoal cannister has broken
Hello. If you have broken the vacuum port off of the charcoal canister, then it may have to be replaced. In some instances, the broken piece can be reattached. However, it will only function properly is a vacuum tight seal...
Car unused for much of a year. Is it safe to drive?
If your car has been used at least once a month and fresh fuel has been put in at least every six months, then you should not have a problem other than maybe a possible low or dead battery, and...
No hot air BMW 118d
Hi there: In many instances, the failure to blow hot air into the cab of your vehicle is caused by a malfunctioning heater core. If the air pressure is low however it could be a fault with the blower motor...
battery tested fine, car won't start
One way to diagnose this is to use a voltmeter to check for battery voltage at the starter motor when the key is held in the "start" position. If there is power to the starter motor, and yet it doesn't...

Related articles

How a Car's Heating System Works
The The sun sets, and the air has a chill. You pause to flip your jacket collar up, and you walk briskly to your car door and slide into the driver's seat. Once you start your car, it’s only moments...
A Buyer’s Guide to the 2013 Cadillac XTS
There’s There’s no denying that the former king of luxury, quality, and name prestige in the American automobile market has suffered from a case of getting lost in the crowd in recent years. Their efforts at a comeback, however, seem...
How Long Does an AC Control Module Last?
Over Over the past decade, vehicles have become far more electronic than they are mechanical, with numerous computers on board that control various functions. Your AC control module is one such computer, and it works to manage the air conditioning...