https://www.teslarati.com/tesla-issues-safety-update-model-s-x-electric-parking-brakes-potential-defect/
Tesla issues safety update on Model S, X electric parking brakes over potential defect
Apr 21, 2017 - Tesla issued a voluntary safety update today to owners of Model S and Model X built between February and October 2016 over a potential manufacturing issue...
electric parking brakeson modelteslaissuessafety