Radio draw on Battery

[shelly4278]

My CD/Radio keeps reading deck error. I am jump starting my car at least once a month. got two new batteries so I not its not a bad battery. I am thinking of replacing my CD/Radio all together. Does anyone know of an eletrical draw on the battery because of a broken CD/Radio I don't know where the draw is coming from.

[jimmy57]

That car, like lots of cars sold in the last few years, does not have a direct on/off ignition switch reltaionship. The key being turned off tells the main module the key is off and that module tells the others to go to their hibernate mode more or less like closing the cover of a notebook PC/MacBook.
When one of the modules has a problem with its shutdown it may stay on and in turn may keep sending messages on the communication network that keeps others on and using power way above the hibernate level.
The car needs to have codes read and network status checked using VIDA as it has the best network diagnostics help for the technician working on it.
Replacing the IAM (integrated Audio Module), which on that car is the CD and radio tuner housed in the CD player unit, may fix it but that is expensive and is a big gamble with no diagnostics to back it up.
An alternate way would be to check the key off amperage draw for 20 minutes and then turning key off and pull the fuse for the IAM/CD player and repeat watching the current draw at regular intervals during the 20 minutes to see if the battery killing current draw is normal (less than 30 milliamps).