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Old 07-27-2016, 12:59 AM
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Service 4WD and no DTC codes?

My '06 is reporting 'Service 4WD system' in the EVIC display. I checked via OBD (torque & bluetooth) and using the ignition-switch-three-times. No DTCs.

The ABS light is lit, as is the traction control light. I've begun to suspect my clockspring as it'd been having some intermittent horn issues.

My question is it unusual for it to report Service 4WD without there being ANY other codes?

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Old 07-28-2016, 11:43 AM
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Re: Service 4WD and no DTC codes?

Bump, what, nobody?
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Old 07-29-2016, 07:08 AM
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Re: Service 4WD and no DTC codes?

My 2010 GCL has the same issue. The transfer case had a internal major failure. It was replaced by dealer under The Chrysler drive train warranty.
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Old 07-29-2016, 05:18 PM
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Re: Service 4WD and no DTC codes?

Hello, it might be the battery. clean the terminals and try again.
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Old 07-29-2016, 05:39 PM
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Re: Service 4WD and no DTC codes?

I guess there are numerous recalls on this for updating the controllers. You might want to check your serial # to see if you need an update. This also could be an intermittent wheel speed sensor. That would trip both 4wd and anti lock brake lights.


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Old 09-07-2016, 07:08 PM
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Re: Service 4WD and no DTC codes?

There was a recall. Mine had the same issue. Dealer repaired at no cost to me.
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Old 09-09-2016, 11:50 AM
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Re: Service 4WD and no DTC codes?

my 08 has same issue was told major failure in clutches (by a reputable mechanic) as well. now shopping for a new case. Last time at dealer when it was checked they said mine was not covered by any recalls or TSB's.
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