Acura's tech. service bulletin described the issue perfectly on a car I bought at a dealer in Indy. Not an Acura dealer, but an indie. Driving car home to Lafayette, started playing with tech. pkg. stuff. Had no illuminated "i" near the mid area to prompt me to check for messages on the navigation screen. Hit messages and trouble codes and had one: "check engine oil level" which I consider a "soft" error as I does not also reflect on "Check engine light" OR with the bright yellow "oil can" signifying "low oil Pressure". Pulled over and oil clean and full to very top of dipstick full mark. Reading on the forum got me to TSB 09-012 which described my issue EXACTLY.. "Check engine oil level" message was display, while inspection revealed oil was full. I read owners manual, bought the three thick service manuals written by Acura and at least I could not find anything describing how to clear these "message warnings". So, In ordered the oil pressure switch pt.# 37240-R72-A01 figuring that would address the TSB and fix my message. I still wondered how, when a message error shows up, one can clear it and see if it goes away, is intermittent, or returns immediately. Then, detected a noise from area of front wheels that got louder with speed. Despite only 61,000 miles on it, I had replaced tires with new as ones on car were shot and I thought this might be cause of whine that increased with speed. Ordered TSB recommended fix for check engine oil issue and took car to mechanic to put on lift and find source of front end noise. To do so, they raise in air, block one front wheel at time from turning and put in gear and spin front tires as they listen. Right front wheel bearing was toast. Checked left front-ok. Few hundred bucks later car was quiet as a mouse on new 18" tires and wheels. BUT! I had two NEW messages about errors on mid display. Both rear wheel speed sensors (#16 and #18) faults. Now have 3 errors and no clue how to clear. Hooked-Up my OBDII reader and not a single Code was set. Realized what these "soft" messages were all about. They are not HARD errors, but likely there to push folks to take their car to stealership. If there is an OBVIOUS reset for these messages, where is it and has anyone seen in either owners manual or thick service manuals how to clear? A U-tube video shows that by pushing 3 buttons simultaneously, you can access error history, clear messages, and more? How would a laymen find? I read prompts and all 3 messages are now gone. I did not need the new pressure switch. Rear speed sensors were simply the result of mechanic having car in air with front wheels turning. Computer sees front wheels turning and back wheels sitting still and "assumes" rear speed sensors are bad! Had I not found what possibly is a little known method to clear messages, they would be there FOREVER. The "check engine oil level" message was set on Feb.1, 2018 and never turned off. I turned it off and It has not come back in a week and should not as oil is full. What's the deal? Ploy to force the uninformed visit their stealer or worse, pull over and possibly tow car that is perfect?? Are these message errors not supposed to clear themselves after so many key cycles?? Will keep oil pressure switch incase error decides it is not done with me.`

 

I'm guessing the rear wheel speed sensors are due to this being a FWD car, the front wheels were turning but the rears were not. This confuses the computer and says "well, the sensors must be bad! those tires HAVE to be moving!" Those may go away. I had an 05 TL that had them get set during troubleshooting at one point. They cleared after X miles, can't remember, it wasn't long like less than 20. IF they don't clear, then yes, you are back to square one and I will let others chime in here.