问：刹车，VSC和ABS灯，在制动过程中打磨噪音

你好。我的车走了110,000英里。在过去的几个月中，仪表板一直在显示几盏灯。有刹车警告灯照明红色，会偶尔显示。另外，偶尔会照亮ABS和VSC灯。当我去商店换油时，机械师因磨损而更换了刹车片。之后，有时只有制动警告灯会打开。当我一次开车时，我掉头了并施加了刹车。噪音很大。似乎我无法像以前那样刹车。 The noise was noticeable several times in row while I was applying the brakes and the three lights were on--the brake warning light, VCS and ABS lights. When I went back to the mechanic, he said that there was air in the brake lines. They bled the system. Could that possibly cause that loud grinding? I am about to take on long-distance driving and I was wondering if it is really safe to drive the car now. Thank you.