Q: The car will start and run on it's own with no key in the ignition.

asked by on

I have replaced the ignition switch. Is this the solenoid. Do I need to replace that?

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. The car will start and run on it's own with no key in the ignition.

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 crank or turn over, cannot be jump-started

Hey there. This sounds like the starter or starter solenoid has failed. Given that jumping the battery does not work, it is more likely the starter solenoid. Have a professional mechanic, like one from YourMechanic, diagnose the starting problem in...

Q: Squeaking noise comes from wheels as it spins.

If the noise does not exist with the vehicle stopped (i.e., due to engine noise), then it is likely due to wheel bearings or the brakes. If brake related, unfortunately these sorts of noises can be related to the use...

Q: Failure to catch or switch gears, belts turning and car has power ect, but won't switch into any gears. Transmission/engine fluids are ok.

Hi there. I have seen this same concern while I was employed at a Toyota dealership. This sounds like the transmission has failed internally; most likely the internal brake band, solenoid, or valve body has failed. The transmission will ultimately...

Related articles

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...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...