1. Check the Transfer Case:
* Shift Lever: Many Durangos have a shift lever (or a dial/button) for the transfer case. Make absolutely sure you've moved it to the 2WD position. Double-check the indicator light on your dash to verify it's showing 2WD. Some models require a complete stop before shifting out of 4WD.
* Electrical Issues (More Common): A common cause is a malfunctioning actuator motor, switch, or sensor within the transfer case itself. This prevents the system from disengaging 4WD electronically. This requires professional diagnosis and repair. Don't force anything.
2. Listen for Noises:
While driving in 2WD (if you can shift out of 4WD), listen for any unusual noises, such as grinding, clunking, or whining. These can indicate a problem within the drivetrain components needing professional attention.
3. Check the Dashboard Lights:
* Warning Lights: Pay close attention to any warning lights on your dashboard. A 4WD-related warning light (check your owner's manual for specifics) is a strong indication of a problem.
* Indicator Light Inconsistency: Is the 4WD indicator light illuminated even when the selector is in the 2WD position? This points towards an electrical fault.
4. Check for Obstructions:
While less likely to directly cause a stuck 4WD, ensure nothing is interfering with the transfer case linkage or any related components.
What NOT to Do:
* Don't force the shifter: If you can't shift out of 4WD, forcing it could cause damage to the transfer case or other drivetrain components.
* Don't drive aggressively: Driving at high speeds or in difficult conditions while in 4WD unnecessarily could lead to increased wear and tear.
When to Seek Professional Help:
If you've checked the obvious (shifter position, dashboard lights) and the Durango remains in 4WD, you need professional help. The problem likely lies within the transfer case's electrical system or a mechanical issue that requires specialized tools and knowledge to diagnose and repair. A qualified mechanic can diagnose the problem (potentially using a scan tool to read diagnostic trouble codes) and repair or replace the faulty component.
In short: The most likely solution is a simple shifter issue. If that's not the case, it's time for a trip to a mechanic specializing in 4x4 systems. Attempting complex repairs without the proper knowledge and tools can lead to significant damage and expense.
