New BSI unit but no horn, washer, central locking, interior fan and headlights on

[solid]

Hi,

New member here, attempting to solve an electrical problem and tried to download a wiring diagram as an attachment but apparently forum rules state I have to make one post before I can do this. So here goes!

Problem: BSI unit replaced after water ingress around windscreen caused old unit to fail. Now headlights on all the time on dipped beam, no full beam even when headlights turned on, no interior fan, no central locking, no windscreen washer (only wipers) and no horn. Main dealer had no idea what fault might be, decided to retrieve vehicle from them as little confidence they really know what they are doing.

Any ideas??

[addo]

Some of those faults might also cross to the stalks or COMM unit, even to the engine bay slave panel (PSF1, also known as the "BSM").

Have you anyone nearby with a Lexia to read the faults log for you?