BMW E84 E90 Cruise Control System Retrofit
This instruction show you guide on how to retrofit cruise control system for BMW E84 E90 vehicle.
![](data:image/svg+xml;charset=utf-8,<svg height="399px" width="599px" xmlns="http://www.w3.org/2000/svg" version="1.1"/>)
Preparations:
2024.08 BMW Rheingold ISTA+ 4.48.40 4.23.14 ISTA-P 3.71 Free Download
NCS Expert BMW Coding Software Download
Procedures:
Install SZL
Run BMW NCS software add FA
3 series E90 cruise control system retrofit need add code”540”
X1 E89 cruise control system retrofit need add code “544”.(some E89 X1 also use “540” code)
![](data:image/svg+xml;charset=utf-8,<svg height="362px" width="372px" xmlns="http://www.w3.org/2000/svg" version="1.1"/>)
After using NCS software add FA,coding for DSC
![](data:image/svg+xml;charset=utf-8,<svg height="303px" width="394px" xmlns="http://www.w3.org/2000/svg" version="1.1"/>)
Coding for KOMBI
![](data:image/svg+xml;charset=utf-8,<svg height="275px" width="336px" xmlns="http://www.w3.org/2000/svg" version="1.1"/>)
Read trouble code by ISTA diagnostic software,it will show “005E50”
Error Code 005E50 – DSC: Steering-angle sensor: serial number; calibration required
You need use ISTA to calibrate DSC
Operate–>Service–>02 Chassis
Select “Steering angle sensor”…
Select “ABL” and follow the guide to perform calibration
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