Opel Mokka PROBLEME Rearview camera,ABS,ESB,return light lights everything permanent ?

Good day forum, problem: And I have the problem that with my Mokka yesterday the return camera is permanently on during the ride (forewarning ) and the reversing lights (reversing gear ) permanently burn during the ride. Then came the ABS light on and ESP light also out of the nothing. First of all: I have not read it out yet. First of all have removed the panel from the rear and the brins (reversing gear ) so that the at least during the Fhart not more lights. Causes of my opinion: – Have also in winter from time to time the problem disc from in Frozen that there may have been water running somewhere above all windshield – Marten damage ( First glance found nothing ) – Short circuit somewhere in the system – Cable breakage vehicle: Opel Mokka Bj 2013 1.7 CDti 131 hp. What do you think about the problem, am open about tips and advice and is very desired. Thank you already in advance.