John Mays

Hello, I just bought a used 2004 Acura TL. I was loading CD's into the CD changer and it locked up. I turned the key off and turned the car back on and finished loading my CD's.

Then, I tried to start my TL and it won't start all of a sudden. When the key is turned off, there's a green key that blinks 5 times.

What the heck is going on with my car?!? Please help!!

John Mays

I've attempted to unplug the battery (for about 5 minutes) and plugged it back in, but it still would not start. The car only came with one key so I am unable to try a different key.

John Mays

Also, everything works on the car. All the lights turn on and everything else is fine. I attempted to jump it off and that didn't even help. When I turn the key, there's a click. When I release the start attempt, you can tell it un-engages whatever is clicking. This is maddening. I am assuming this is some security feature due to the key icon and my googling of the symptoms?

Will Y.

It's likely the immobilizer chip in the key, which must be reprogrammed to match the car's ECU. If you got the car from an Acura dealer, it should reprogram the key for you.

You may have to have a locksmith or car dealer reprogram the key-- if you are an Auto Club member, it might be able to help.
For approximate costs, see this thread: https://acurazine.com/forums/3g-tl-2004-2008-93/question-about-key-replacement-853137/

FYI, there were 2 remote fobs, 2 regular keys and a valet key that came with each TL.

Welcome to AZ.