Where is the oil sending unit located, 2009 Charger 3.5?

Turn the ignition to run position with out starting engine, same with key or push button, push accelerator pedal to the floor three times with in 15 seconds. don't have to stomp it. Remember, do not have engine running. Hope this helps you.

Depends on vehicle, some are quite easy, others could be a night mare (some require removing intake manifold,etc.etc.)
national average part $34-$60.00, labor $74-$94.00
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see links below for what is involved on some models.
How To Install Replace Oil Pressure Sensor Sending Unit GMC Savana Chevy...

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It's located by the oil filter,it's screwed into block,easy to remove,remove electrical connector,get wrench and remove part.

you will have several sending units.
1. Oil pressure sending unit, which according to peoples site that I have visited is right above the oil filter.
2.sending unit in gas tank going to gauges, which is in the gas tank.
3. temperature sending unit, which is located near the thermostat housing or near the end of the upper radiator hose.

first need to buy oil pressure sending unit 3/8 deep socket remove oil pressure sending unit you need teflon tap sealer for oil sending unit threads.okay to replace oil pressure sending unit.you need safe raise support vechicle locate oil pressure sending unit next to the oil filter.disconnect oil pressure sending unit wire connector then use oil pressure sending unit 3/8 socket remove the sending unit.then take new oil pressure sending unit use teflon tape white plumbers tape or use thread sealer apply to the oil pressure sending unit threads then install new oil pressure sending unit and reconnect electrical connector to sending unit.then crank engine check for oil leak if all is good lower vechicle back to ground wait several minutes check engine oil level.you good to roll.

Click on link to view.http://www.autozone.com/autozone/repairinfo/repairguide/repairGuideContent.jsp?fromSearchPage=true&pageId=0996b43f80cb42b6&partName=Oil+Pressure+Sensor&partId=0996b43f80cb42b6

Its mounted on the oil filter adapter just above the oil filter.

sometimes the service technician fails to remove the old oil filter gasket. This causes a leak at the oil filter. This would cause a leak which would lead to low oil pressure and loss of oil. You would have to remove the oil filter and check for an extra gasket. Or perhaps the oil filter was never tightened. If you find one then just remove it and re-install oil filter. You will, however, leak a couple cups of oil so have a drip pan ready. You may have damaged your engine if you ran with no/low oil pressure for any length of time.

either your pressure is low causing the light to come on , and dangerous to your engine , or the oil pressure sending unit is dead. It is just a small pressure switch that screws into the side of the engine block and reads the oil pressure. If the pressure is low , or the sensor is dead , the light comes on. Oil pressure sending units die a lot more often then oil pumps , and they are not expensive to buy , or hard to install. The hardest part of the job is actually locating on your engine. Its location should be easy to find out online.

I just replaced the oil pressure sending unit on my 2000 Durango and it is located just above the oil filter. You need a deep-well socket to get the old one out and to put the new one in. It is something that is very easy to replace so if you have a deep-well socket you can do it yourself and save yourself lots of money. Once you get it threaded in you just connect the wire to the end and you should be good to go. Be careful not to break the clip that holds the unit in cause then it will wiggle itself out of place and make the check gauges lite come on again and make you think that the part is bad. Not to mention you will think that you have no oil pressure.