Hi, I've just received a retrofit kit from Kufatec. The hardware has been successfully installed. Now the question about coding. Instructions from Kufatec say that two modules need to be coded: - Module 16 (Steering), byte 2, bit 2 to get checked/activated. Done. - Module 1 (Engine), byte 6, bit 0 to get checked/activated. It comes actually activated from the factory (original reading of byte 6 is 00000001). Either the instructions are outdated or the engine module is too new (it's number 03L-906-018-JP), would need to find out which other bit/byte needs to be activated in the Engine module. If only module 16 coded and no coding/changes in module 1, module 1 throughs an error and engine electronics lamp comes flashing on on the dash. Just in case, the car is 2014 year model A4 2.0 tdi Avant . While I'm waiting for advice from Kufatec and trying to find an official VCDS around to see if it provides clear instructions for which bit/byte needs activation, your ideas would be greatly appreciated!