My lightning bolt light comes on a few seconds after starting the car. Then once the engine is fully warmed up, if you restart the car the light does not come on. It also seems to be affected by underbonnet temps, as on a cold day it takes longer (up to an hour) before you can get the light to go off while on a hot day 10 minutes. It does not affect the driving but it is annoying.
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2007 Cherokee 2.8 CRD, auto, Anniversary Edition
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