
Voltages are changing and can vary from 12 to 14 volts. If the battery voltage drops below a set voltage, the reflashing process will stop and possibly damage the module. Some reflash sessions can last more than 45 minutes. Most reflashing methods require the use of the four pins in the DLC that are open to the manufacturer. It is an interface that acts as a gateway that translates the messages back and forth between the PC and controller into a protocol that is understood by the vehicle. If your Wi-Fi is unstable, use a LAN/ethernet connection.Ī J2534 pass-thru programmer is a box and/or cable able to connect the PC to the vehicle and communicate with the correct pins on the OBD II connection.

The PC must remain connected to the Internet during the entire procedure or the module could be damaged. You can’t download a vehicle reflash file at home and install it when you get to the shop. You must have a stable Internet connection to reflash modules. The computer should only be used for reflashing and navigating OEM websites. Make sure to read all of the OEMs’ recommendations for the largest volume of vehicles you plan to reflash.

Some systems specify that the system be 32- or 64-bit versions of Windows. Most OEMs require a Windows-based PC with specific hardware, operating system requirements and user settings.

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