THE TRANSAXLE WARNING LIGHT COMES ON AFTER DRIVING ABOUT FIFTY MILE.

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WILL TURN OFF WHEN VECHILE IS TURN OFF THEN RESTARTED. AFTER ANOTHER FIFTY MILES THE LIGHT COMES BACK ON. IT IS NOT USING TRANSMISSION FLUID NOR DOES IT SHOW ANY OTHER SIGN OF DANGER. NEVER HAD PROBLEMS UNTIL I WAS HIT IN THE REAR END OF THE VAN. I GOT THE RIDE OUT OF THE SHOP AND HAVE HAD THIS PROBLEM EVER SINCE. I WAS TOLD THE REAR END HAD NOTHING TO DO WITH THE TRANSMISSION. ANY IDEAL WHATS WRONG ARE HOW TO FIX IT