VRSmk3black

Hi, While away in Germany last week my 2016 plate Mk3 Octavia VRS TSI came up with a fault on the dash board of “keyless access system faulty” which comes on the screen every few seconds and creates a binging noise (very annoying while driving). I’ve just gotten home and plugged in my carista obd which gave me a fault code of 1057287 for the ignition ecu. I also had a drivers door fault but couldn’t find a fault code for it. Firstly Has anybody had this fault code show up before? If so what was the root cause of the issue? Secondly can anybody supply me with information about where the antennas for the keyless entry system are? I suspect the antenna has just worked itself loose from the connector after a spirited trip down the autobahn at 140mph so want to try and find it before taking it to a garage! Thank in advance