Q: my car heater works and theres no check engine or low coolant light on,but antifreeze leaking into passenger side

asked by on

coolant is leaking into passenger side cabin but the low coolant and engine light never comes on and the heater still blows out hot heat and air conditioner air is cold

My car has 38120 miles.
My car has an automatic transmission.

Hi Kimala. If the heater is working but you have coolant leaking inside the cabin, then the heater core itself is probably good. However, there are multiple coolant lines that are hidden behind the dash that could have a small leak. It’s also possible that the heater control valve might be leaking as well. Without being there to inspect the vehicle personally, it’s hard to tell you exactly what repairs need to be completed.

Was this answer helpful?
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. my car heater works and theres no check engine or low coolant light on,but antifreeze leaking into passenger side

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: How do you know transmission going out

Hello there, many faults can cause your 2004 Honda Accord to not shift properly. The most common is low transmission fluid, shift linkage, torque converter, shift solenoid, or transmission mechanical faults. The first step a technician will take is to...

Q: My temperature is reading cold, almost to the bottom. Is this normal?

Hey there. The cold reading could mean that your thermostat is stuck open or the cooling fan is running all of the time. It could also mean a problem with the sender or gauge. Have a mechanic diagnose the cause...

Q: Above you give information for correction on the fuel cap, but where is the "next" button?

Hi there. The message is on for the fuel system is not able to build up pressure. Check the fuel cap seal and see if the seal is cracked or broken. A broken seal on the fuel cap will cause...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
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.