Skip the auto shop - Our mechanics make house calls

Q: Truck starting without key in ignition

asked by on

Over the last year and a half, my Toyota pickup has mysteriously started up with no one in the truck three or four times. It hasn't done this for a few months now and it recently did it again yesterday. The only way we can shut it down when it does this is to stomp on the brake pedal. Got any idea what needs to be replaced or checked?

My car has 15000 miles.
My car has an automatic transmission.

A: Hi, thanks for writing in. It sounds like y...

Hi, thanks for writing in. It sounds like you may have a faulty ignition switch that is causing your vehicle to start without the key. I would recommend having your ignition switch inspected and replaced if necessary in order to resolve this issue. Another thing I would recommend checking it for any electrical shorts in your starting system that could cause the vehicle to start on its own. I would also recommend having this issue resolved as soon as possible as many safety issues could result from a vehicle that starts all by itself. Here at YourMechanic, we can have a technician come to your home or office to inspect and diagnose this issue for you, and make or suggest the necessary repairs.

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

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!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: How do I adjust the settings on the air conditioning?

You want to travel in comfort at just the right temperature. Adjusting the temperature and fan allows you to find the ideal environment for all of your journeys. Turn the dial that controls the fan speed clockwise to increase...

Q: Car not starting

Hi. Is there any more information you can give us? For example, does the car crank at all or does it just make a clicking sound when you turn the key? Do any of the lights turn on when turning...

Q: Engine got flooded and hydrolocked. Need second opinion.

Hello, it sounds like you may have bent or broken a rod if the engine is now knocking. It sounds like there may be some damage to the bottom end of the engine. A technician such as one from YourMechanic...

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 to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
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.