Oct 15, 2010 · Re: Lights flashing randomly on Grand Cherokee With the auto light feature turned on, it shouldn't flash at all. Sounds like you have an electrical issue, possibly a loose ground or loose signal circuit in the system, in some cases, the light photo sensor on top of the dash, IF it's malfunctioning will cause that issue. All of these lights will come on for about two (2) seconds upon turning your vehicle's ignition to the 'ON' position. This is normal. Your vehicle is checking to ensure all warning lights in the gauge cluster are functioning properly. These lights should disappear after startup of your vehicle. The Jeep division of an American manufacturer Chrysler started to produce the Jeep Grand Cherokee since 1993. It was a mid-size SUV with a front engine, which was available as rear-wheel drive and four-wheel drive. Jul 27, 2009 · 2006 Jeep Grand Cherokee Overland: the dash warning lights..under load I have a 2006 Jeep Grand Cherokee Overland 5.7. When first starting the vehicle all of the dash warning lights go on as they do when the key is first turned to the 'on' position. dashboard lights came on all at once while driving (2006 Jeep Grand Cherokee) ONE TIME I DID NOTICE THAT THE SPEEDOMATER AND TAC WENT TO 0 BUT CAME RIGHT BACK UP TO THE SPEED I WAS GOING WHICH WAS ABOUT 40 MILES PER HR. A check engine light can indicate a broad spectrum of problems with your 2008 Jeep Grand Cherokee. In some cases you need to pull over immediately to prevent damage while in others you merely need to tighten you gas cap next time you stop in order to reset the service engine soon light.