I have an 04 rx 8 and I took the battery out due to it leaking around the post and got another one to put in to the car but when I hooked the new one up the alarm went off and I couldn't get it to turn off I tried putting the key in the driver's door and nothing and the car wont crank either any suggestions

 

Have you tried unlocking the car with the remote? That usually fixes it for me.
Sounds like it thinks it's being stolen, hence no crank.

 

My key fobs do not work I have tried replacing the battery in them and reprogramming to the car but didn't work I am my wits end with this I know it has to be a simple fix

 

Take the battery back out and then try again

 

Ok will try that again in the morning, trying to take care of this without having to get it towed to mazcare cause I know I will be kicking myself in the *** when it takes 5 minutes to fix it and it was something simple that I over looked thanks for you guys help you guys have always helped me before hope it works this time

 

Did you by chance hook the battery up backwards?

 

No, I know my why around a car but I understand where your coming from most girls don't know where the gas goes now days in a car let alone how to work on one but my dad taught me how to work on cars at a young age

 

Try this.. with the alarm going, open the door and use the power locks button to unlock the car. Then come to the front and disconnect the battery. Then close all the doors but don't lock them. Then connect the battery again.

No promises, but it might work.
.

 

Well, we don't know if you are a dude or girl until you say so, but anyway...

You should be able to disable the alarm by simply unlocking the door with your remote, or open the trunk with it.

If that fails, try putting the key into the driver side lock and turn it and see if it will turn off.

 

You can order a switchblade keyfob that will work.
It's a common problem on '04s.
I had to get one.
I'll look for the thread with the info.

Here it is, you need the Visteon model number and the FCC #.
I got mine from the Remote Superstore online.

https://www.rx8club.com/series-i-tro...orking-214555/

 

This thread helped me track down another pesky electrical issue, it may be helpful, if not, it may come in handy for something else.

https://www.rx8club.com/series-i-do-...utputs-155947/