For BMW 3 5 7 Series 2009 2010 2011 2012 2013 2014 2015 2016 F CAS4 System Fob 433Mhz 7945 Chip Smart Remote Key Keyless Full intelligent

[PERFERT REPLACEMENT CASE SHELL]This is a shell. Its quality is the same as the original key, even better than the original key. Before installation, please open the back cover of the key, which has screws and log0. [YOU CAN REPLACE IT BY YOURSELF] Take the internal electronics(include immobilizer/transponder chip) from original remote and place them to our key shell,then you are ready!Also give instructions and screwdrivers, you can do it yourself, very easy and simple.If you still don't understand how to install, please contact us, we will provide video and teach you how to install 【Need programming】You can't program by yourself, MUST be programmed by a Professional Automotive Locksmith(With programming method).To replace the blade, you can choose to reset the old key or replace with a new blade. 【Complete key】Battery Installed & Uncut Emergency Key Provided Ready to Work with Your Vehicle 【Confirm again】Match FCC ID and Part Number in Description to an Existing Remote to Ensure Compatibility with Your Vehicle.If you used the key or tried to program the wrong purchase, you will not be able to return or exchange the product.