Q: My hot temperature light is blinking and the temperature is below the C mark. Is it safe to drive home?

asked by on

I was driving home from work when the temp gage dropped to below the c and the hold light started flashing. Am I able to drive it home?

My car has 94086 miles.
My car has an automatic transmission.

Hi there. The coolant temperature sending unit is malfunctioning and sending the vehicle the wrong information or the gauge on the dash has failed. The sending unit could have burned inside causing the computer to think that the engine is overheating. Also, the sending unit could have failed making the gauge read cold only and not register. The gauge in the dash could have failed causing the meter to register cold all the time. To see if your engine is overheating or not, open you hood and feel the upper radiator hose. If the hose is very hard and very hot to the touch, then the engine may be overheating and the gauge is malfunctioning. If the upper radiator hose can be squeezed a little and it not that hot, but has some heat to it, then the engine is operating normally and the temperature sending unit (sensor) has failed. If you hear any gurgling sound, then the engine is overheating to the point that its boiling the coolant. If there is no sound, then the engine is not boiling the coolant. I recommend seeking out a professional, such as one from Your Mechanic, to help you with your coolant sending unit and indicator lights.

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 hot temperature light is blinking and the temperature is below the C mark. Is it safe to drive home?

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: The headlights flicker.

The most likely cause for lights flickering would be a bad or loose ground. Make sure battery terminals are tight. Make sure the battery and other engine grounds are tight. Check the connector and harness at each headlight to be...

Q: My gas gauge is doing a funny little dance.

The fuel pumps are all inclusive on what they call a fuel module or assembly. These modules include a float (quite like the float on your toilet) that tells the computer and your dashboard where the fuel level is at....

Q: Car recently started overheating gauge reading 260+

You can check a couple of things. I believe it is the fan that went out but, if your fan is working, I would check the hoses while the car is at operating temperature and to see if the hoses...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
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...