首页 > 生活常识 > autohold什么意思车上的什么按钮(开启“AutoHold”等红灯,结果被追尾,会不会打坏变速箱?)
2026-03-04

autohold什么意思车上的什么按钮(开启“AutoHold”等红灯,结果被追尾,会不会打坏变速箱?)

现在很多车都有AutoHold自动驻车)功能,行驶中临时停车时自动驻车就会启动,这时候你既不用换N挡,也不用拉手刹,直接松开刹车也不会溜车。起步的时候直接踩油门就能走,非常方便。


但是有一些车主对自动驻车不了解,担心在使用的时候万一被追尾会对变速箱产生冲击。其实完全不用担心,因为自动驻车和挂P挡是不一样的。


P挡是用机械机构把驱动轮给锁住使其无法转动,此时如果被追尾的话要么是驱动轮在地上以抱死的状态往前滑行,要么就是冲击力太强,直接把变速箱P挡锁止机构给弄坏。


但是自动驻车并不靠变速箱,它靠的是ESP系统


咱都知道ESP的液压控制器里有个液压泵,在汽车失控的瞬间这个液压泵可以主动产生压力对个别车轮进行刹车,以此来调整车身姿态。


而自动驻车利用的就是这个功能,当你踩刹车停稳后ESP液压控制器会自动给车轮施加制动力,这样你就可以松开刹车了。


所以说自动驻车启动的时候其实就相当于挂着D挡踩刹车,这时候就算被追尾,也是车轮在地上以抱死的状态往前滑行,对变速箱没任何冲击力。


自动驻车有个开关,打开开关后指示灯会变亮,这就代表功能开启,接下来就不需要你进行任何操作了,只要你把车刹停,它就会自动帮你“踩住”刹车。这个开关的图标一般显示为“AUTO HOLD”字母,也有一些是刹车标志里面有个大写字母A。


自动驻车虽然方便,但我觉得这东西其实挺鸡肋


首先它工作时汽车的状态和挂D挡踩刹车是一模一样的,这时候油耗会增加,对于带液力变矩器的车来说变速箱油温度上升更快,会增加汽车散热系统的负担。


其次自动驻车在起步的时候需要先踩油门,系统检测到你踩油门信号后才会释放刹车。但你在市区遇到堵车走走停停的时候跟车距离都比较近,起步时踩油门容易把握不好力度,追尾的风险更大。而不用自动驻车的话起步时你松开刹车汽车就开始往前蠕行,这时候再踩油门就更安全。


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