Need some advise please....

So my wipers started playing up and would stop in middle of the screen...got them looked at and it was a relay issue but they come as a unit with the CJB (Central Junction Box) so got a new one via warranty......then while coding was told the key less module was locked and would need the new one which was again done via warranty....

Got the car back end of last week and few issues now...the tailgate sometimes opens when I unlock the car...the alarm randomly goes off whenever it wants....the steering wheel feels heavier, before it went it...it was light? (when I picked it up the steering column height wouldn't adjust and they sorted that out within a few minutes) and also before whenever I used to finish most journeys and lock the car I would hear the suspension working and drop a little...I don't hear that anymore...(well not since ive had it back)

Could the steering wheel and suspension issues be due to any of the works with the CJB? RRS TDV6 2010