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.

A: Hi there. Check the glow plug control relay...

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: Key not locking doors

I’m not sure if you mean the actual key, or the key fob(keyless entry). If the actual key will not lock the driver’s door, did you try the trunk, or the passenger door? If it only works in the ignition,...

Q: How do I top off AdBlue?

The Audi Q5 has an AdBlue filler cap located next to the fuel filler cap on the side of the car. Some Audis are supplied with a hexagonal AdBlue filler cap, which requires the wheel nut wrench from the boot....

Q: Multiple electrical problems with car.

The symptoms you describe on your vehicle lead me to believe your vehicle may be experiencing an electrical problem with the Totally Integrated Power Module or TIPM on your truck. This module is responsible for many different components on the...

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...
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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...