It works with the car’s on-board computer to create the fuel-to-air ratio. One owner wrote o… Service the 4WD system soon. Jeep Compass Warning Light is on Inspection at your home or office. If the light remains lit after you have driven it several times more than 30 mph, have your Jeep Liberty serviced by a certified dealer as soon as possible. Cold or hot weather can also play a factor in how tires react to the temperatures. But just the valve or the solenoid can activate your Jeep check engine light. I will take a pic of the light tomorrow if it comes on. But do you really want to take that gamble? And you’ll want to address this. After all, if it’s something more serious, you could be left stranded. Blinking Check Engine Light Diagnosis: Jeep Compass. I make this a habit every Sunday morning to do a total system check before heading out that following week.. this doesn't mean nothing will happen.. and in our case what can/could happen, usually does. The computer needs these measurements so it can direct the fuel injectors to add more or less gasoline to the air/fuel mixture. Once you determine it’s your Jeep check engine light, you might feel alarmed. Jeep liberty: I have a warning light on that is an exclamation point - Answered by a verified Jeep Mechanic We use cookies to give you the best possible experience on our website. What does it mean when the exclamation point is lit up on the dashboard of a Jeep Liberty? Im having an exclamation point light up under the drive portion of my dash from time to time...I have no clue what this means as well as I dont have ... 2008 Jeep JK Rubicon Unlimited (Bought for Wife) 2007 GMC 2500HD Duramax (Work Horse) 1982 Honda CB 900F Supersport A bad sensor or more probable since you live in Florida the fluctuation in the air temp going from hot to cold. Jan 12, 2019 at 9:29 PM #1 #1. But an O2 sensor code will surely show up in a diagnostic test. Your new Jeep Compass has several indicator lights that are designed to let you know when a system or part of your vehicle is on or in use. Whether you are on the go or plotting your next adventure, be comfortable in a Jeep® SUV. Jeep Compass indicator lights can come in various colors (yellow, white, green, blue, or gray), and simply tell you when aparticular system is currently at work in your vehicle. For the TPMS light all you need to do is air the tire up to the correct pressure and drive. It's based on the same platform as the Jeep Renegade and Fiat 500X, albeit extended to offer more interior space. Home » Auto Repair Blog » Auto Repair Help » Why Is My Jeep Check Engine Light On? If none of the above seem to be your issue, it could be that your Jeep check engine light is on as a result of an aftermarket alarm that was not installed properly. The EVAP valve prevents vapors from the gas tank from being released into the atmosphere by steering them into a canister to be burned in the engine. 4WD performance will be at a reduced level. No need to take it to the dealrship. The 4WD Warning Light appears as the characters 4WD with an exclamation mark, and indicates a fault with your 4WD system. Our certified mobile mechanics come to you 7 days a week between 7 AM and 9 PM. When turning a key in the ignition, the vehicle should start, without trouble. It’s controlled by the engine control module or powertrain control module. It’s a warning light in your instrument panel and looks like a U-shaped pictograph with treads and an exclamation point in the middle. Just pull up your pants and add air to your tires, the light will go out on its own. But if your Jeep check engine light doesn’t require a serious repair and you have the expertise to handle the job yourself, check out our Jeep Repair Manuals. References & Definitions. 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