I had the caravan body come loose from the chassis. There was no noise but I could see it moving in the rear view mirror a couple of times after it had gone over a bump. Fixed twice under warranty and I was not confident that it was fully sorted so I tried the van in.
If you are getting a loud bang then it is most probably something on the car!
Is your jockey wheel fully up? If not fully wound up and tight it might have come loose and wound down and botted out?
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XC60 2013 D5 215 SE Lux Nav geartronic
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