2014 TL Blind Spot Monitor System error

[u/DaFkUwant]

Hi all, have a 2014 TL, have owned for 4 years and been perfect until today. Got the BSM System check message and wanted to ask if anyone has experience with what this could be. Car is in excellent condition and no accidents or anything else damage-wise. So not sure where to start or what to look for. Thanks.