1. It's passive keyless entry. It's pretty simple.

就是免钥匙进入系统 非常简单

2. You ran because you were downloading keyless entry systems to cars that you were supposed to be valeting.

你逃跑是因为你在下载 无钥系统用来进入 应该由你停泊的汽车

3. This is the little keyless fob that locks and unlocks it, and you could see that as the button that launches a missile.

这就是用来解锁或者上锁用的钥匙卡 你可以看到 这解锁按钮就像一个导弹的发射按钮

以上参考资料就是本英汉词典详细汇总的单词keyless的翻译英语含义，如有错漏请向我们提供反馈意见。