How do I unlock my esn on my eclipse AVN 52D - Car Audio & Video

Open it? Perhaps you mean 'unlock it'?

https://www.google.com/search?q=eclipse+AVN-z05i

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the esn is only active if the previous owner activated it. the user would of used a CD to be a key cd and that is how they are unlocked. if the cd is lost or damaged, Eclipse can give a code to unlock it. However the original owner needs to have registered the deck with eclipse and have some kind of ID like mother maiden name. there is also a second registration that can be done. which an eclipse dealer can do, it is for used cars with eclipse radios, and things like that.
They can be real strict sometimes about giving out a code, and the authorized dealer has to be the one calling, and somtime that means a lot of time on hold.

wiki.eclipse.org/MemoryAnalyzer

forum.windowsfaq.ru/archivede/index.../t-98126.html

http://auto.manualsonline.com/manuals/mfg/eclipse/avn.html
try the above link to download the user manual to this device. It has all details.
Gopakumar Gopalan Google

replace eclipse avn-g01 car settup software

email [email protected] with "avn 2454 map disc" as subject... will see if i can help you

i just buy a mercedes c240 and have a dvd eclipse avn 6640HD on it. pls help me to change the language from japonese to english. i cant operate nothing because i don't understant . pls tank you.

my email: [email protected]

for avn 5435 on the left:press menu and cont ant the same time, while holding them down press menu on the right 5 times

a menu will appear and ask you for a code. you have to call 800-233-2216 and pay $25 for the code. you will have to explain where you bought your eclipse and or know the name of the original owner. if it doesnt match they will not give it to you