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4th Gen Ram Tech2009 - 2018 Rams and the 2019 Ram Classic: This section is for TECHNICAL discussions only, that involve the 2009 - 2018 Rams and the 2019 Ram Classic. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
The traction control/ service 4by4 lights kept coming on in my 2012 ram 1500. In my case, I could not shift out of park. The problem was a faulty rear lights switch. Problem solved