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99 Mercury Mountaineer 4wd light flahses

\015 The last couple of days have been very hot in se South Dakota (up to 100), and I've noticed the 4wd High and 4wd Low lights flash every so often. It's usually about six times, then it stops for a while. Does it very rarely at interstate speeds--usually at about 55-60 mph, or when accelerating or decelerating. The vehicle seems to run okay (191,000 miles), but I'm wondering if that should be a concern or what I can/should do. (Thanks!)\015 Posted / edited by AnonymousUser on : 12-03-2018

Answers :

Usually it means the system is seeing a problem - you might want to get the computer scanned for trouble codes. The code will be different from an engine code.
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