Step 1: Get your vehicle’s engine running. This is because the exhaust system on GMC sierra has a vacuum that runs through it, and when you start again after resetting the check engine light, this vacuum will draw out any excess gas or fumes. Step 2: As soon as your GMC Sierra starts up, turn the ignition off. Video Description. A check engine light can indicate a broad spectrum of problems with your 2010 Lincoln MKX. If you have a flashing check engine light, turn off the engine immediately to prevent potential motor damage. Whereas a steady check engine light may mean you merely need to tighten you gas cap next time you stop in order to reset the Let the reader, read. The scan tool will automatically link with your vehicle’s computer. The reader has a small LCD screen. It should say: “read” and then “done.”. The time from “read” to “done” is usually 4-5 seconds. Once the screen says “done,” unplug the reader and turn your vehicle off. Troubleshooting: If the reader This is an effective way to reset the check engine light on your Toyota Tacoma. Step 1: Locate the OBD-II port in your Toyota Tacoma. This port is typically located under the dashboard on the driver’s side of the vehicle. Step 2: Get an OBD-II scanner and plug it into the OBD-II port. This device will read the codes that are causing the check Hold down the brake and press the power button one time to turn the car on. Continue holding down the brake, and then press the ODO trip button. (The ODO button is located by the hazard lights.) (If the glass readout says TRIP, you may have to change it to ODO for this whole process to work.) Here’s how to reset your check engine light safely: Wear safety glasses and gloves. Turn off the ignition, and open the hood. Locate the battery and find the negative terminal. It is usually black and/or marked with a minus (-) sign. Hold the negative cable to the side for 30-60 seconds. 1. Loose or bad gas cap. It is possible for the check engine light to come on in Renegade due to a loose or bad gas cap. The fuel system in modern vehicles is designed to maintain a certain level of pressure, and if the gas cap is not sealing properly, it can cause a leak and disrupt the pressure balance in the system. Step 3 – Reconnect battery. Disconnecting your battery has disconnected your ECU's source of backup power. Now your ECU's memory has been cleared, your check engine light should be off, and you're ready to go. All that's left is to reconnect the negative terminal of your car's battery by reattaching the battery cable to the terminal and 1. Loose or bad gas cap. It is possible for the check engine light to come on in Avalon due to a loose or bad gas cap. The fuel system in modern vehicles is designed to maintain a certain level of pressure, and if the gas cap is not sealing properly, it can cause a leak and disrupt the pressure balance in the system. Fix all the problems that have triggered the fault codes. Rescan the vehicle for codes. Next, go to Clear Fault codes [2] and press OK. If you don’t fix the problem, the check engine light might come back on. These instructions work on any 1996 and newer Volvo, including XC90, S40, S60, XC60, S70, V50, etc. 4eLls8.