2007 Volvo XC70, during replacement of the steering wheel module, one of our Volvo techs noted the steering wheel was loose, and the retaining bolt not tight. Upon removal of the wheel, he noted multiple cracks at the splined hub, apparently a casting defect, and a major safety issue. We’ve noted a number of loose wheels on the later model Volvos, but this is the first one we’ve seen with this extent of cracking in the cast aluminum hub. Correction consisted of replacement with a new unit, and torquing the retaining bolt to the proper setting.