Service 4wd light intermittent/ Dodge 2500 Power Wagon 5.7 Hemi.
Service 4wd light comes on on occasion.
goes out after about 2 min; into morning warm up.
came on yesterday for the whole drive home from work, about 60 mile..
Then did not come again until about 30 miles into this mornings commute. Then went out about 20 mi; later.
When it's on, the rear lock light on the switch flashes.
Normally in normal drive mode both the rear and rear/front lock will flash if set to that point but not in 4wd and acually set to lock.
But when service 4wd light is on and rear lock is flashing, if I set it to rear/front lock it does nothing, no flashing.
I was told 4wd module or transfercase 4wd motor/solenoid???.
yes/no?. Or something else. I notice no issues in normal driving mode.
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Jul 2, 2010 - 15 posts - 9 authors
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ABS and Brake warning lights intermittent may be caused by a failing wheel speed sensor(ABS Sensor) and /or its connector. You may have one on each wheel hub(4WD) or if 2WD, a sensor may be on the rear axle differential center.
4 wheel drive service try un hooking the battery for 5 min and see if that clears if not go down to auto zone use there computer to clear it the computer wants you to change the gear lube in the front rear and rear rear it wouldn't hurt to check the level in the transfer case
wire that goes to the starter not the main wire there is a smaller wire that sends electric from the switch to the starter solinoid might be shorting out (skinned wire between the starter and the ignition switch/fusebox
You need to find out what code it is setting that will make it easyer to find out what is going on. You need a true OBD II scanner to do this. I have had the problem with this same intermitant light. You can check to see if the transfer case wiring is rubbing where the wire go around the trans
I have the same problem on my 2003 Dodge Ram 2500 5.7 Hemi. Also the gauge is sometimesslow to register after filling. Maybe 5 minutes.My neighbor has the same poblem with his 1999 Durango? I think this is a job for a recall.