Hello,I just bought a 06 commander with a 4.7 and i was interested to see how the 4 low worked. So, following the manual I put it in 4low just fine but now it will not shifted out. The thing just beeps and service 4wd system come up on the screen.please help.and yes I even tried to shift into neutrul
All good thoughts above but a couple of additional ideas.
Since you indicate a recent purchass, you likely haven't looked it over, from a driveline perspective, very closely.
For starters, are all the tires equally worn and of the same manufacturer and size?
If any one or more tires is a different diameter, due to the above differences, the transfer case will tend to bind in low range.
The transfer case shift motor won't be able to make the requested shift and the 'Service System' light will come on.
This is the computer saying it is unable to perform the request......not necessarily a mechanical problem.
To 'unbind' the driveline, the owners manual says sometimes a slow coast (like slower than walking speed) in nuetral while lifting the lever, will sometimes be required.
If it is a severe bind, due to dimensional differences, you may have to follow that proceedure while rolling backwards.
You can also 'unbind" the driveline by raising any one wheel off the ground.....if it is bound, you will see the wheel spring into a unloaded condition the moment the tread clears the ground.
If you then start the vehicle and follow the transfercase shift instructions, with the wheel still off the ground, and it successfully shifts, you now know for certain there was a bind condition......most likely caused by a diameter difference in the tires.