How change the oil pressure switch

does not have drain plug, on this car you have to remove the oil pane if you want to change or servicing

Have you checked the oil pressure switch ?

remove the dummy plug on the oil switch at the unused terminal

Sounds like bad oil pressure switch. Is the engine making any loud noise(s)? I'd replace oil pressure switch and/or check connection at oil pressure switch.

install it with a sealer or teflon tape and snug it in tight but not super tight

There are three engines that come with this car, there are two engines 2.0 and2.4 with the oil pressure switch located on the right front of the engine block, and then if it has the 2.5 engine then the oil pressure switch is located on the leftside of the engine block above the oil filter, good luck,.

chrysler 300m is well known for the oil sending unit to go bad! if u have diagnosed it to be coming from there then ur hunch is prolly right

Test the oil pressure, if too low, repair the engine, if normal replace the pressure sending unit .

lift the hood. the light are down behind the light assembly. simply turn large black ring and it will come out. be carefull not to touch the glass on the new one. oil from your skin will cause it to prematurely fail.

Is an oil pressure problem, inside the oil pan have an pump strainer , maybe its dirty
clean