How to Reset a Ford Explorer Computer - Open the hood: release the primary latch by pulling the release lever under the steering wheel near the floor board.
- Disconnect the negative battery terminal.
- Wrap the negative clamp in a towel.
- Leave the negative battery cable off for a minimum of five minutes.
- Remove the towel from the negative battery cable clamp.
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Correspondingly, how do I reset my Ford computer?
How to Reset the Ford PCM
- Open the hood of the Ford. Loosen the lock nut located on the negative battery cable connector with a socket and ratchet. Pull the connector off the negative battery terminal.
- Wait for 20 minutes while the PCM bleeds off the electricity it stores for backup power. Once the power drains from the PCM, it resets.
One may also ask, how long does it take for a PCM to relearn? It only takes ~30 seconds for the computer to relearn its settings. Generally it'll idle high during that time (at least on WJ's) until it learn them.
Also Know, how do you reset your car's computer?
How to Reset a Car Computer
- Open up the hood.
- Remove the positive terminal cable from the battery using your pliers or wrench.
- Go to your fuse box in your car, and look at the diagram. Select the fuse that is labeled "ECM" and remove this fuse.
- Keep the car disconnected like this for two to three minutes to clear the computer's memory.
How do I reset my 2002 Ford Explorer?
How to Reset the 2002 Ford Explorer XLT After an Oil Change
- Crank the Explorer's engine or turn the key to the "ACC" ignition position. Push the "Setup" button to the right of the steering wheel.
- Push "Reset." The screen will show "Oil Life - Hold Reset New"
- Press and hold "Reset" for two seconds.
- Press and hold "Reset" again until the screen flashes.
Related Question Answers
What are the symptoms of a bad PCM?
These are the symptoms of a bad or failing engine control unit (ECU) - Check Engine Light comes on. An illuminated Check Engine Light is one possible symptom of a problem with the ECU.
- Engine stalling or misfiring. Another symptom of a bad or failing ECU is erratic engine behavior.
- Engine performance issues.
- Car not starting.
How do I reset my phone?
Factory reset your Android phone from the Settings menu - In the Settings menu, find Backup & reset, then tap Factory data reset and Reset phone.
- You'll be prompted to enter your passcode and then to Erase everything.
- Once that is done, select the option to reboot your phone.
- Then, you can restore your phone's data.
How do I get my Ford Fiesta out of limp mode?
How to get out of a ?Limp? Mode? - Don't panic, remain cool and calm.
- Bring your car in an uncrowded part of the road.
- Bring the automatic transmission into “PARK”.
- Turn off the ignition switch.
- Wait for 10-20 seconds.
- Then turn on the engine.
- Shift the gear to anything you want.
What is powertrain control module reprogramming?
The PCM (powertrain control module) is your car's on-board computer. The PCM can be reprogrammed to improve the car's performance or to fix a bug that negatively affects one or more of the car's characteristics (the car maker creates updates to the PCM software periodically), which is usually done at a dealership.How do I reset my Ford Fiesta ECU?
The correct procedure to reset the PCM/ECU (PCM is the correct FORD term) would be: First disconnect the NEGATIVE battery cable from the battery. Second disconnect the positive cable. Next touch and hold the two cables together for 30 seconds.How do I reset keep alive memory?
The KAM can be reset using a capable scan tool in a few seconds. If you don't have a capable scan tool disconnecting the PCM (computer) for 10 seconds will also work. Another method is to remove the positive battery cable and connect a jumper to the positive battery cable end to ground for 10 seconds.Does disconnecting the battery reset the computer?
An old mechanic's trick for turning for temporarily eliminating certain kinds of driveability problems is to disconnect the battery ground cable for 10 seconds to "reset" the computer. Essentially, this trick erases the stored fault codes in the PCM's keep alive memory and turns the Check Engine light off.How long do I have to drive my car to reset the computer?
Here's something you probably don't know: after clearing the car's computer you will need to drive for about 50 to 100 miles. As you drive your car the computer will monitor all the sensors and register the results.How much does it cost to reprogram a car computer?
Depending on your make and model, the computer itself will run anywhere from $100 to $1,000. Most of them are located underneath the dashboard inside the cabin of the vehicle. Labor will run an hour or two because of the reprogram that needs to happen once the new computer is installed.Can a car run without a computer?
Yes, it's true. Most cars prior to about 1980 had no computers in them at all. Carburetors and some forms of mechanical fuel injection operate without computer control - even though all modern cars use electronic fuel injection of some form, to my knowledge.How much does it cost to reprogram ECM?
The average cost for an engine control module (ECM) replacement is between $904 and $988. Labor costs are estimated between $79 and $101 while parts are priced between $825 and $887. Estimate does not include taxes and fees.Does a used ECU need to be reprogrammed?
Yes. In fact, if you want to change the ECU for any reason, a dealer will have to reprogram your keys into the ECU. Or it will not start.Will disconnecting my battery reset codes?
The battery disconnect method will work on most vehicles. Some late model vehicles will not clear trouble codes by disconnecting the battery. On these vehicles trouble codes are stored in the ECM's ROM, and only a scan tool will clear trouble code(s) and turn off the check engine or malfunction indicator lamp (MIL).What happens when you reset the ECU?
"Resetting the ECU" is the process of clearing all the long term memory from the ECU's memory. These variables trim idle speed, fuel, spark, and more. The ECU will also store trouble codes for diagnostic capability.How do I program my car ECU?
Entering programming mode Ensure the OBD-II vehicle interface is properly connected. Switch the ignition to ON but do not yet start the engine. Choose Detect Vehicle… from the Tools menu, then select Program Engine ECU when the window appears, and click OK. Select Program ENgine ECU to enter programming mode.What is idle relearn?
Because your vehicle's engine is electronically controlled by a computer, some control conditions are maintained by power from the battery. When the battery is disconnected, a new battery installed or a tune is loaded, the engine must relearn its idle and fuel trim strategy for optimum driveability and performance.How do I reset my ECU?
To "reset" the ECU, all you have to do is remove the source of backup power. To keep the memory alive while the car is off, the ECU has a direct line, through a fuse, that goes right to the battery.Where is the ECU in a car?
The Main ECU is located on the passenger side behind the dashboard, under the airbag. The Body ECU is located on the Drivers side. The fuze panel is where the Body ECU is.Why is my engine stalling after replacing the battery?
Why can a new battery cause stalling? But by disconnecting your battery when you replace it with a new one, you cut the flow of power to your vehicle's computers, if only for a short time. If the power is disconnected for too long, these computers can lose their VRAM settings, including the engine idle settings. 
