Q: Q: Engine light

asked by on

Toyota engine light is ON only when the ignition is on but the engine light will turn off as soon as the engine gets started. Why ??

Hello and thank you for your question. Toyota vehicles have a self test built within the computer systems. When you put the key in the ignition and turn on the key to the On position or Accessory position, the engine light and oil light will illuminate. When you start the vehicle, these two lights should shut off once the computer system verifies that all conditions of the vehicle are current and error free. If there is a problem with the engine management system, the engine light will remain lit up after starting the engine. If your warning lights remain on, indicating that there is an issue, you can contact a YourMechanic certified technician to come to your location to diagnose and repair the warning light.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Q: Engine light

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: Trying to locate my camshaft position sensor

Hello, thank you for writing in. The camshaft position sensor is located towards the front of the engine directly at the end of the camshaft. Due to not being able to see the camshaft, you are going to want to...

Q: When I turn ignition off and pull key out, car doesn't shut off. when i can shut it off, next morning battery is dead.

Malfunctions in the EGR (Exhaust Gas Recirculation) system would not affect the ignition system or battery. If the EGR system has a fault, the service to request is EGR system diagnostic/inspection. If your vehicle engine continues to run after the...

Q: Vibration in car.

The most likely problem you are describing is the front brake rotors are warped. The rotors would need to be replaced with the brake pads at the same time. I would recommend the brakes and front end be checked first...

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...
What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...