general problems of the 2015 Lexus IS250

Vehicle was in motion had a driver side hit, really bad and really hard and the bags didn't deploy.

The panel that covers the driver side front air bag pops off repeatedly. Car has been back to the Lexus dealer (bredemann of glenview, IL) at least a half-dozen times without a satisfactory fix. While this appears to be a cosmetic problem, my concern is there is a deeper issue that could affect the air bag as well and I do not want to be driving the car when the air bag suddenly pops. Bredemann Lexus has been unable to solve the problem and the general manager of the dealership has not returned a phone call. The date listed below is merely the last time the car was in for service which failed to fix the problem.