This comprehensive guide outlines the necessary steps and equipment required for coding and diagnostics on a BMW Z4 E85 using a K DCAN OBD2 cable. While several guides exist, this one focuses specifically on the E85/E86 Z4 models, providing clear instructions and verified solutions.
Cable and Software Requirements for BMW Z4 E85 Coding
Successfully coding your BMW Z4 E85 requires the correct cable and software. This guide details a confirmed working setup using a Windows 7 laptop and a specific K DCAN cable. Remember, compatibility can vary depending on your PC and vehicle.
Recommended K DCAN Cable for BMW Z4 E85
A reliable K DCAN cable is crucial. One confirmed working option is available by searching “bimmer$0ftw4re” online (replace the characters with the appropriate letters).
Important Cable Setup Steps:
- Bridging Pins 7 and 8: Bridge pins 7 and 8 on the OBD2 connector. While this was necessary in the tested setup, it’s uncertain if it’s universally required.
- Driver Installation: Windows should automatically install the necessary drivers upon connecting the cable. Ensure your PC recognizes the cable as an OBD interface.
- COM Port and Latency: In Device Manager, set the cable to COM1 with a Latency Timer of 1. Always use the same USB port to avoid reconfiguration. If a different port is necessary, repeat this step for the new port.
Alternative K DCAN Cables:
Other confirmed compatible cables include:
- Option 1: Amazon.com K+DCAN Cable – Requires bridging pins 7 and 8.
- Option 2: Amazon.com INPA K+DCAN Cable – Features a built-in switch; set it to the far right position.
Reputable Cable Vendors:
- Bimmergeeks: https://www.bimmergeeks.net/store – Offers reliable cables and software.
- Cable-Shack: Cable-shack.co.uk – Another well-regarded cable source.
alt: A K+DCAN cable connected to the OBD2 port of a BMW Z4 E85.
BMW Standard Tools Software Installation
The recommended software for coding your BMW Z4 E85 is BMW Standard Tools, available from https://www.bimmergeeks.net/downloads.
Installation Procedure:
- Download the Standard Tools package.
- Extract the downloaded folder using WinRAR or a similar program.
- Carefully follow the instructions in the “Install Instructions.txt” file.
- Download the appropriate NCS Dummy Profile for your NCSExpert version: https://www.bimmerforums.com/forum/showthread.php?1553779-NCS-Dummy-Taking-the-expert-out-of-NCS-Expert
- Extract the NCS Dummy Profile file.
- Place the extracted file into the
C:/NCSEXPER/PFLfolder. - Run NCS Dummy or create an empty text file named
FSW_PSW.MANin theC:/NCSEXPER/WORKfolder if it doesn’t exist.
alt: Screenshot of the BMW Standard Tools installation process on a Windows computer.
Important Software Notes:
- Daten Files: The Standard Tools package typically includes the necessary daten files. Verify these files against the latest E85 daten download to ensure they are up-to-date. Using the included daten worked in the tested setup.
- NCS Dummy Version: While using the latest NCS Dummy version is recommended, an older version may suffice if it functions correctly. Updates between versions may be minor.
Establishing Connection with INPA
After installing the software and setting up the cable, it’s time to connect to your Z4 E85.
- Connect the K DCAN cable to your PC and the car’s OBD2 port. Leave the ignition off.
- Launch INPA software on your PC. Initially, “cable” should have a black dot and “ignition” a white dot.
- Turn the car’s ignition to the accessory position (position II). The “ignition” status in INPA should change to a black dot.
If the “ignition” status doesn’t change, troubleshoot the software, computer settings, or cable connection. A successful connection indicates proper communication between your PC and the Z4 E85, allowing for coding and diagnostics.
This guide provides a solid foundation for coding your BMW Z4 E85. Always double-check compatibility and follow instructions carefully. Using the correct K DCAN OBD2 cable and software is paramount for a successful coding experience.
