I have a cx-9,2014.The bsm light is flashing.The dealer says the right side module is faulty.They say they have to be replaced in pairs.They say u3000 bulletin also calls for lengthy recalibration.Comments appreciated.

 

If the LHS is faulty/damaged it can be replaced on its own. For some reason, if the RHS requires replacing, both sensor/radars require replacement as a pair. I remember reading a TSB on it.