Resetting a car's tire warning light is an operation that can only be done after having carried out the check that the car requires of us, to avoid bigger problems. Let's see how to do it: with the car stationary, turn on the ignition, go to screen 3 of the menu, select Vehicle info, in the sub-menu we look for "tyre pressure" and hold down "Ok In order to reset the Fiat 500L tire pressure warning light, you need to turn on the instrument panel by turning the appropriate key: then you will need to move to the menu on the instrument panel using the buttons on the left spoke of the steering wheel. How to reset the service light / oil change due on a Fiat 500.Check Euro car parts - Question type: Maintenance & Repair. We just had our 2014 fiat 500L trekking oil changed yesterday for her scheduled maintenance and today both the low oil pressure light and check engine light came on as I was driving. I am hoping it is due to something perhaps the guys at the service center missed or put back incorrectly and not something The "light little" 500L is actually heavier & much bigger than a 500e. & the 500e has a battery pack in the floor, for more balanced weight distribution. 2018 500e is 2980Lb on 185 tires with 23" outer diameter. & 500L Pop is 3254Lb on 205 tires with 25" outer diameter. The tire pressure monitors on our cars are indeed wireless (as I believe all of the in-wheel type sensors are) but they operate at 433Mhz, which is well outside the range of RF that would be legally permissible for a WiFi router to interfere with - they use the unlicensed 2.4 GHz spectrum (2412-2484 MHz) or else the unlicensed 5.0 GHz spectrum (5180-5825 MHz), both of which are incredibly far Sep 10, 2014. #2. Graham54 said: Hi All. I have just serviced my wifes 40k 2011 500 Twinair (Couldn't afford the £400 Fiat wanted) Changed the oil and filter, topped up to the right level but now I am getting a red oil light & low pressure warning. It says to turn off the engine. The light only comes on at low revs (below about 1200rpm. 9. Drive the vehicle above 15 MPH, for at least 20 minutes, and monitor the low tire pressure monitor to ensue it does not blink. About Fiat 500X. The Fiat 500X (Type 334) is a subcompact crossover SUV manufactured and marketed by Stellantis (formerly Fiat Chrysler Automobiles), since its debut at the 2014 Paris Motor Show. Following the 500L Tire Pressure Monitoring Module - Mopar (68201504AA) 2014-2019 Fiat 500L - 68201504aa. MSRP $314.00 . Change Location. Submit. Invalid Postal Code . At the point, when 2017 Fiat 500L low tire pressure warning light is on, be sure to check all tires for low air pressure and inflate as needed. Refer to owner's manual on the most proficient method to reset 2017 Fiat 500L tire pressure monitoring system. OGt3.