how to reset car computer with scan tool
Observe the 45-Minute Waiting Period. Open up Cars Hood.
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Use a high-spec diagnostic scan tool.
. Turn off the car and disconnect the scanner. Select Codes and Clear all current and stored DTCs Wait for the scan tool to indicate that the codes have been cleared. After you reconnect the battery start the car and let it idle for about 15 minutes.
Whether youre a professional mechanic or just trying to troubleshoot a second-hand vehicle this scanner is a fantastic option despite the slightly higher price tag. Even after the introduction of onboard diagnostics II OBD-II professional scan tools continued to cost thousands of dollars. They will scan your computer and clear the trouble codes for free.
After the 45-min wait restore the battery and reconnect all the terminals. Successfully complete the OBD-II system monitors that are built-in to the vehicle. Do a soft reset.
Leave The Fuse For A Little Time. Put the battery back in place. Turn on the scan tool and allow it to start up.
Choose ECU from the main menu. Will touching battery cables together to reset computer. Press the eraseclear button and wait to see a No code signal.
Have a functional Check Engine light and OBD port. Using software from a. The Ancel Classic OBD Scanner view at Amazon is our top pick on the list for being a solid and accessible piece of hardware.
Once everything is ready switch the car back on and inspect the check engine light. Insert the fuse back in to the box. Get a wrench that will fit the size and just loosen up the terminal.
Reinstall The Fuse And Reconnect The Battery Terminal. Thats what I suspected scan tool still needed to do it right. The Check Engine light must be off.
Resetting the Car Computer with the Battery Turned Off. If you clear the Check Engine light or reset the OBD-II monitors right before your emissions test your vehicle. To pass an OBD-II emissions test a vehicle must.
Remove all rust and rinse the battery after cleaning to clean off all the solutions. Remove the ECUECM fuse from the fuse box. Keep the car disconnected like this for two to three minutes to clear the computers memory.
Open up the hood. Reset radio and clock. Insulate the battery wires.
Turn off your car battery. To remove the terminal you will need a small wrench to access the bolt that is holding the battery clamp. This will give the car computer time to reset and reboot.
This will allow the computer to relearn your driving habits and adjust accordingly. Otherwise everyone would do idle-learn without scan tool. After taking all the steps make sure the check engine light doesnt turn on that would mean it worked.
Remove the positive terminal cable from the battery using your pliers or wrench. Here is the step by step process of how you can reset your car computer with the battery off. Remove The Positive Terminal.
How do I reset my ECU scan tool. Remove The Fuse From Fuse Box. This will drain the capacitors in the vehicle which is needed to reset the cars computer.
Follow the instructions on the scan tools screen to enter engine and transmission information. Whenever you touch the battery cables together and drain the capacitors the clock will lose its memory the radio stations will need to be reset all fault codes will be cleared the outside temperature may take some time to relearn any systems with security codes will need to be reset and the computer will need to Apr 23 2018. To reset a cars computer memory simply disconnect the battery for 2-3 minutes.
Record the code that appears as it will represent the required repairs of your vehicle. Clean the battery and its terminals using water and baking soda. Go to your fuse box in your car and look at the diagram.
Auto mechanic for the last 45 years Scotty Kilmer shows you how to use your own computer to repair your car through an OBD scan tool. When you use the PCM reset feature in the scan tool the data pid changes to Learning while it does the idle relearn and then changes back to Completed after 5-10 minutes of idling. The simplest trick in the book to reset a car computer is by removing the positive terminal from the battery.
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