Esys 3.40.2 Info

FDL coding lets you alter specific system behavior preferences line by line.

It features faster loading times for large PSDZData files compared to older versions (like 3.27.1).

Changing specific parameters (e.g., enabling Video in Motion or disabling Auto Start/Stop).

A matching PSdZData Lite (for coding) or Full (for flashing) version. esys 3.40.2

Change the value from nicht_aktiv (inactive) to aktiv (active), or modify the hexadecimal values.

Set the car to remember your last setting so you don’t have to turn it off every time you start the engine. FDL coding lets you alter specific system behavior

The vehicle’s I‑Level (also called I‑Step) is the overall software release installed on the car. As BMW releases new I‑Levels, the structure of CAFD files may change. If your E‑Sys version and PSdZData are too old to understand a newer I‑Level, coding may fail. Conversely, a very new E‑Sys version may not run on older JDK environments. Version 3.40.2 hits a sweet spot for many 2014‑2018 BMWs, but for 2020+ vehicles, you may need to move to the or 24.xx series.

Never code or flash without a steady 13.5V+ power supply. A battery charger is not enough; you need a dedicated Flash Power Supply .

Open the E-Sys Launcher (e.g., BimmerUtility) to run E-Sys. A matching PSdZData Lite (for coding) or Full

Although E‑Sys is not primarily a diagnostic tool, it includes a DTC (Diagnostic Trouble Code) reader that can access all ECUs. This is useful for verifying that a coding or flashing operation did not introduce any errors, or for clearing fault codes after a retrofit.

Select your vehicle's specific target chassis (e.g., F020 for the F30 3-Series, S15A for the G30 5-Series). Do not select the target variant appended with "_DIRECT". Select and click Connect . Step-by-Step VO (Vehicle Order) Coding