2004 jeep grand cherokee will not start and at the same time all gauges and dash light blink and flash

SOURCE: 2004 jeep grand cherokee will not start, dash

It takes very little voltage and amperage to operate dash gauges. You cannot rely on "seems" when it comes to the battery. A good battery should have standing voltage of at least 12v and be able to "snap back" from a fifteen second 200 amp load. Under load, the voltage should not drop lower than 9.5 volts. Have the battery charged and load tested before going anywhere else with this. then make sure connections are clean and tight. After you get it started, if battery was good, check starter draw and charging system operation. If it does not start, check power flow from key through neutral safety switch and starter relay to starter.

Testimonial: "very helpful , battery was no good , installed new battery. problem solved"