请教各位车友，问题一：在电子手刹灯左边位置有一个黄色的灯是发动机故障指示灯，这个灯在车通电后为什么出现？（未着 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;车）。 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 问题二：正常情况下，通电后多长时间发动机故障指示灯会熄灭？ <img src="http://club0.autoimg.cn/album/g23/M03/1E/7E/userphotos/2016/03/29/12/500_wKgFXFb5__qATRQ9AC8wgXoXxZA217.jpg" style="height:933px;width:700px" />

请教各位车友，在电子手刹灯左边位置有一个黄色的灯是什么意思