Which problem are you having with the transfer case ? The front wheels will not engage.

* Issue : Faulty Front Wheel Locking Hubs
* Description : Regular stress on the drivetrain may cause smaller parts of the axle to malfunction or become damaged. Heat and pressure causes friction, which may eventually weaken or break components.
* Solution : Four Wheel Drive Inspection

* Issue : Internal Transfer Case Failure
* Description : Internal damage to the all-wheel drive transfer case may be caused by low fluid levels or lack of lubrication. This would cause drivability problems.
* Solution : Transfer Case Service

Buy your car diagnostic device :
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Please note

In most cases, the check engine light comes on even without a fault or because of a minor fault.
The electronics can be fickle and can detect "failures" without incidence :

  • Poor fuel quality,
  • Fuel tank cap improperly closed,
  • Low oil level,
  • A faulty sensor,
  • Etc...

Sometimes, a simple reset via CarDiag can solve a lot of "electronic problems".