How To Reprogram The Ecu On A Car

Modern cars just about any car made within the last 20 years have a large number of computers that control various functions. Here is how to reset your cars ecu to get better fuel economy andor for your car to lean how to use new upgrades.

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Depress the brake for around 20 seconds so as to completely discharge the capacitors of the ecu system through brake lights.

How to reprogram the ecu on a car. Before attempting to reprogram the ecu select enter utility mode to identify the ecu version. However you can flash your car engine yourself with the right tools. The ecu software version rom filename is shown in the box below the enter utility mode button.

How to use reprogram tool. Check the calibration history of the vehicle go to the gm web page at. Other compatible roms are shown below the ecu version box.

As you wait for the charge in the circuit to get depleted you can take the opportunity to wash your car battery and battery compartment. Wait for 5 minutes. Connect your pc to the tech 2 scan tool with a rs232 cable pass through device.

There are many symptoms that can be associated with a faulty ecu. More accurately it controls ignition fueling and things like cam timing etc. The gearbox if an automatic will also have an ecu that controls gear shifting.

For example the engine ecu controls. In this example it is us wrx 2011my ad021 0000. Its a bountiful cash crop for repair shops who tend to charge between 80 and 120 for the service according to underhood service.

Drive your car for around 15 minutes to bring it to its normal operating temperature. If the programming is optimized your cars engine tends to run much more efficiently. Now stop open your cars bonnet and remove the lead of earth from the battery.

Here are some ways to tell if yours is damaged or faulty. You can use water and baking soda to clean the battery and the battery terminals. How to reprogram your engine computer.

The check engine light is on. Programming option 2 enter utility mode. Car computer location inspection and.

The actual reprogramming procedure for a typical gm vehicle goes as follows. How to reprogram a computer in your car diy with scotty kilmer. In case of any rust use wd40 spray to wash away the rust.

In this video i show you how to program a vin in the toyota after ecu swap if you need to program the immo security information watch my other video on how you can do that without a scanner. Its used to regulate many systems and subsystems in your cars engine drive train and other major components. Click query ecu to identify the exact ecu version.

The ecu or engine control unit is a major component of your cars onboard computer. Start the gm recalibration software program on your pc and enter.

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