In Reply to: Oil Level Sensor posted by Andy Peavy on April 09, 1999 at 10:57:31:
: My check control is consistantlyy displaying the 'Oil Level Low' message when I start the car and when I shut it off. When it first came on, the oil level was only 1/2 quart from the top. I topped it off and it has not made a difference. It is time to change the oil so I thought I would look into it.
: Anybody ever replace an Oil Level Sensor?
: Was it hard? I assume it is in the bottom of the oil pan.
: Andy Peavy
: 91 535i
: email: [email protected]
Andy, it's real easy, especially at oil change time. It's just a small threaded unit (about $10-12) with a single tab-type wire connection to it. Unhook wire, remove old, screw in new one (thread sealer good here), and reconnect the wire.
On my 525, it was located down low on the right side of the block (not the oil pan). Don't know exactly where it is on your car, but i doubt it's very different or more complex for the 3.5L, just look for a single wire sensor on the block, about the size of the O2 sensor.