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Q: 4x4 will not work only the front wheels pull and not the back 4x4 light blinks on 2005 Mercury Mariner

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4x4 will not work only the front wheels pull and not the back
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The 4X4 light flashing indicates a fault in the transfer case system. The concern could be electronic or mechanical. We do not see many problems with this system. It takes a scanner that can access the 4X4 module to pull DTC's. Without these codes, it would be impossible to diagnose.
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