(The emulator simulates a perfectly working ELV for the CAS. So don't worry, this emulator will be good for 3 and 4 pin ELV modules too.). The problem with ELV is known in the E81, E82, E87, E88, E90, E91, E92, E93, E60, E61, E63 and E64 models and also Mini R55, R56, X1, X3, X5 series.
eBay