Service 4wd indicator + bad odor
My wife was complaining about a bad odor inside the cabin of the jeep (08 CRD Limited). She also mentioned that by the way the service 4WD indicator was coming up as well. Sure enough I drove the jeep to the store one day with no smell or issues but leaving the parking lot all of a sudden I had the odor in the cabin of the jeep and shortly after the service 4WD indicator lit up. The smell was mostly gone by the time I reached home. Tonight I decided to do an oil change on the jeep. When I was completed I had the jeep running while I put some things away in the garage. Suddenly I could smell the odor from the Jeep. I quickly popped the hood to see if I could figure out where the smell was coming from. I checked the vent from the front differential and sure enough that's where the smell was coming from. I also noticed that there was actually smoke coming from the outlet of the vent. Seeing as the jeep had not moved for sometime the smoke couldn't have been from overheating due to bearings gears or whatever. The smoke lasted for a short time and then stopped on its own. I'm thinking that it must be something electrical inside the differential. If it was a short of some kind you would think it would blow a fuse somewhere. I seem to remember reading in other posts about a solenoid inside the differentials. Is there anything else inside the differential that could possibly cause this?