Skip the auto shop - Our mechanics make house calls

Q: Glow plug light makes warning sound when driving at high speed

asked by on

when I am driving at high speed the light come on and produce sound, when I stop and switch off then on its when until i speed again

My car has 101000 miles.
My car has an automatic transmission.

Hi there. Check the glow plug control relay to see if it is malfunctioning. This is a common part to fail on the diesel engines. The light is coming on for a the computer seeing that the engine is too cold. Also, check the coolant temperature sensor to see if it is registering properly. If the temperature sensor is not working then it needs replaced. If you need further assistance troubleshooting your vehicle, then seek out a technician, such as one from YourMechanic, that can assist you with the glow plug circuitry.

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

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: Car won't start after replacing fuel pump

Hi there. If the car was running fine prior to the pump being replaced, then you may have a defective pump. If the same problem was occurring before the fuel pump was replaced, then there may be a circuit problem....

Q: AC automatic turns off

At 124000 miles, I would recommend having your AC system recharged and your system pressures checked. Hopefully, a recharge will correct your problem, but it will be a good service to have for maintenance regardless. You may have a...

Q: Noise while driving at highway speeds

Without being able to hear the sound and also with no TSB's (technical service bulletins) out from KIA for known issues that match your issue, it will be hard to make an accurate recommendation. Deep rumble sounds are often...

Related articles

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...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.