TOOGOO(R) Uncut Replacement 3 Button Car Remote Key Keyless Shell Case for BMW E31 E32 E34 E36 E38 E39 E46 Z3 This is a high-quality remote case unit. This is for you to replace your worn or broken case. The keyblade needs to be cut at qualified locksmith. All you need to do is to move the internal components from your old remote to our new case. There is NO interior (remote / electronics / transponder chips / battery) unit inside.