My check engine light came on a couple of days ago while towing out large 3500kg Jayco Caravan. When scrolling through the engine / trans oil temps I found the engine oil showing minus 34 deg Celsius !! Soon after it reverted back without numbers at all and background display showing in red. Went to my Jeep Dealership this morning and they have picked up a code advising that the engine oil temperature sensor needs replacing. They need to do some research before they can even guess at the repair cost. The warranty on my 2015 diesel Laredo expired just six months ago. Bugger !!!