Join Date: Aug 2018
Location: Two locations in NH: One near Concord, the other at the 45th.
I believe if you're down 2 quarts it will activate the kill switch. Not sure about the low pressure indicator. In fact I didn't know we had a low pressure indicator. We do have an oil temperature gauge which is a pretty redundant (and useless) invention. From what I've read on this site, the engine just shuts down if the pressure is low, and many complain about where they get dropped -- left lane of the expressway, middle of an intersection, miles away from a store, etc. Frankly, a low oil pressure indicator is the last thing you want to see. That pretty well indicates the damage is done. Don't expect sympathy from the manufacturer, a judge, jury, or arbiter if that's ever come on. They'll all agree you should have checked the oil level yourself. The dipstick is the only genuinely reliable indicator of your oil level.
I've posted elsewhere on this site that the oil consumption on my 2018 Compass began at 1000/qt and gradually improved to 3000/qt by 30,000 miles. Knowing that any new engine will use oil I started checking at 1000 miles and was amazed that the oil was so low. I expected some consumption, but that was a LOT. So as I said, it gradually improved to where it was acceptable for a very old engine, not a brand new engine. I just learned to carry a couple extra quarts with me.
My 2018 Compass was replaced with a 2019 Compass that uses hardly any oil: about 5000/qt which is where I'm at now, and about what I'd expect from a new engine. I expect my consumption will trail off to no consumption by 10,000 miles. That's what should happen; I'll post if it doesn't.
I understand your problem, in fact I had it. However, its a nuisance, but neither the end of the world, nor the end of your Compass -- you're just going to have to befriend that dipstick. Worst case scenario, you have to buy a couple cases of oil over the life of the vehicle. In the long term perspective, that's not a lot of money. Agreed, it shouldn't be consuming so much, but also remember its Congress who voted for the CAFE standards, so if you're really upset about this, write to your reps in Washington, not FCA. The manufacturers are just coping with government regulations. Compasses are not the only vehicles with oil consumption problems, other reputable manufacturers have the same issue: they must push the margin of error so far in the direction of fuel economy that other problems creep in. Like I said, write your politicians.