Q: Wont start after leaving the key on all night.

asked by on

Last night i left keys in ignition in the "on position" but not running. came out this morning to a dead truck, tried jumping it which powered up all the electricity which seems normal but can't get motor or anything to turn over or even make a noise. got new battery, didn't help. so when i turn key on, all electronics and everything come on but go to turn motor over, silence...truck hasn't had any problems leading up this.

My car has 30000 miles.
My car has a manual transmission.

Hi there. Check the battery cables and see if the are tight and clean. A loose battery cable can cause the power to come on but not turn over the starter. If the battery cables are tight, then check the key fob and ignition key and see if the key has lost communication to the computer (ECM). If the key did, you will have to reprogram the key to the vehicle and then the engine should start up. If you need further assistance with your engine not starting, then seek out a professional, such as one from Your Mechanic, to help you.

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. Wont start after leaving the key on all night.

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: Why won't my truck start?

Hi there. Check the battery cables and see if they are tight and clean. If the battery cables are tight and clean, then check the ground wire to the fuse box and see if its loose or corroded. If the...

Q: Had transmission front and rear pinon seal replaced now has a wine noise from gear shift area

Replacing the seals should not have anything to do with the noise unless they put in the incorrect type of oil after the work was done. I would make sure the correct GM transmission fluid is used or you may...

Q: Bad clutch in my truck

Hello! Thank you for writing in with this question. This generation of Tacoma has an adjustable clutch pedal assembly. As outlined in the Tacoma service manual, if the assembly is out-of-adjustment, it could cause slipping. A local mechanic (like those...

Related articles

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...
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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...