The wifey didn't close the door properly so after 3 days my 99 ml430's battery got drained. I tried jump starting it and it works. So I knew it was the battery and replaced it. After replacing it, it starts then dies. I've searched here but there are gazillions of reasons.
I'm planning on trading this sucker so I just wanted to keep my expenses to a minimum.

What would be the top 2 culprit why this is happening?

Thanks a million.

 

You might have fried the key when you jump started it. Try a different key. My 2 cents.

 

Now that you have fire the next 2 needed is fuel and air

 

appreciate it very muchos señors

 

it was the key i tried my spare and it works.
so, how do i get the other key to work again?

thanks

 

You have to buy a new one, the old one is no good now. When you jump started with the key in the ignition, it was ruined. My 2 cents.

 

oh no! well, if that's the only way i guess i have to get a new one from the dealer.

thanks again

 

when was the last time you replaced the battery in the key? You may want to try that first. I know they cell the battery in many pharmacy's

 

Before replacing the batteries the key can unlock/lock the doors but not to start the truck. After replacing the batteries, it's totally dead. Tried resyncing it several times using different methods and switched the old batteries back but to no avail. Oh well, I guess it's time to get a new one.

Anyway, thanks a bunch guys for your suggestions.