Volvo XC60 differential noise issue requiring replacement on Volvo XC60

Some Volvo XC60 owners report experiencing differential noise issues, particularly a whining sound from the rear end of the vehicle around 40 mph, which may indicate a problem with the rear differential. These owners note that the noise can become more pronounced at certain speeds, prompting the need for a thorough inspection. Additionally, Volvo has issued service bulletins regarding odd noises in various models, suggesting that similar issues could also affect the XC60. Some owners have found that addressing the differential problem requires disassembly of the failed differential to identify the cause and necessary components for a rebuild. In certain cases, removing the differential from the vehicle is essential to assess the damage and decide between a rebuild or replacement. Symptoms reported by owners also include humming noises that correlate with vehicle speed, starting around 35 mph and increasing in pitch. It is recommended that affected owners consult a qualified mechanic for a comprehensive evaluation of the differential issue.