Skip the auto shop - Our mechanics make house calls

Q: Lost the truck key and went to dealer to get a new one. Got home and it won't turn the ignition on. What could be wrong? It unlocks doors but that's it.

asked by on

Lost truck key. Got new one at dealer get home won't turn ignition. Will unlock door but won't turn ignition

My car has 206000 miles.
My car has an automatic transmission.

Hi there. The key will have to be programmed to your vehicle. First put the key in the ignition switch. Turn on the switch to the ’ON’ position. Then press the unlock button and hold it. Turn off the ignition switch while holding the button. Then release the button. Turn on the ignition switch to the ’ON’ position. Then press the lock button and hold it. Turn off the ignition switch while holding the button. Then release the button. Now your vehicle should start. If it does not, you will have to do the same thing in the driver door key slot. If you need further assistance with your key not working, 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 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!
  • Home
  • Questions
  • Lost the truck key and went to dealer to get a new one. Got home and it won't turn the ignition on. What could be wrong? It unlocks doors but that's it.

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 runs fine when idling but while driving it sometimes shuts off and I have to wait a few minutes to fire it up again.

Hi there. When the engine stalls out, the power steering and the power brakes will stop working for they need the engine to operate to make them work properly. For the stalling issue, check all of the sensors on the...

Q: Is there some trick to taking the coil pack off a spark plug?

Hey there. The coil pack is not connected directly to the spark plug. There should be a spark plug wire running from the coil pack to the spark plug with a small 'boot' on the end of the wire that...

Q: My car won't shift into gear

Hello, there is a park shift interlock system on your car that prevents the vehicle from being taken out of park when the ignition circuit is not powered up. I think you have an ignition switch voltage concern. If there...

Related articles

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...
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...
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...