Hi Everyone Maybe someone can help me

I have a 2006 Dodge 2500 Diesel and today I got in my truck started it went to fuel station turn it off and the raido stayed on alone with the dinging. So I put the key back in started the truck up again and turn it off and the same thing. So I put fuel went back home and it did not do it again. Do any of you guys no what this can be.. Thank you for your INFO Ben

 

Without knowing the electrical of an '06 I'd guess either a relay is sticking on or your key switch is acting up.
My bet is more than the radio is staying on.

 

My bet is on a relay/connection in the steering column. Or something between the radio and the column. Look for a crimped wire or exposed wire by a connector, relay. Just my .02 with some experience.

 

If the correct setting is set the radio is supposed to stay on for about 10 minutes or so after shut down or until a door is opened. Might that be the case?

 

mine just started the same thing today. shut off truck and radio stayed on for a few seconds, never did before, and don't have any settings that would cause it. also i opened the door with my keys in my hand and it began chiming as though i had left the key in the ignition, it eventually went off by itself. any common electrical between the two to start checking?

 

so today it didn't do it hopefully it doesn't come back...