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3rd Gen Ram Tech2002-2008 Rams: This section is for TECHNICAL discussions only, that involve the 2002 through 2008 Rams Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
have an 04' ram 1500 hemi. 4-wheel lite doesn't come on, not sure if lamp is bad or switch not being made. have looked on case but don't see it.......where is the switch?
Get underneath the truck and find where the linkage is for the 4WD shifter. It connects to a rod held on by two hard plastic grommets, and above that is the switch. Check the conditions of the grommets. If they are deteriorated (or missing) you will get slop and the linkage will not fully mate the switch.
My suggestion is to simply replace both grommets and the switch. It’s a cheap fix.
Forgot to mention: turn key on and check dash. If the 4WD lamp illuminates, the problem is what I mentioned above. If it does not illuminate, it’s the lamp.