Last night we were driving back from an appointment doing about 70mph. It was around 100 degrees F outside (San Antonio, TX). Ironically, our 2006 PT hit 42,000 miles and when it did, all of the warning lights flashed on and all needles (speedometer, fuel guage, tachometer, etc.) dropped to their "engine off" positions. I did not notice any loss in power and the exterior lights remained on. This happened a couple of miles further down the road and repeated every few miles. This continued to occur even as we approached our subdivision at speeds around 30 - 40 mph. This morning on the drive to work (5 miles from home and speeds not in excess of 45mph) there was NO repeat of this incident. Any thoughts?
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