Coding the Front Turn Signal Lights.pdf

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Pre-LCI to LCI Xenon AHL Conversion: Coding the Front Turn Signal Lights

Retrofitting LCI Xenon Adaptive Head-Lights to a pre-LCI BMW E90 requires the NFRM ECU to be

coded to disable all bulb checks of the Front Turn Signal lights in order to prevent defective

bulb errors being reported on the instrument panel. The LCI headlight LED turn signals draw

less power than what the pre-LCI system monitors for, which was designed to test filament-type

bulbs, and thus triggers a bulb fault if not disabled.

The procedures described herein were conducted with NCS Expert Tool version 4.0.1 running

under Windows 7 x64. Vehicle was a 2008 335i Sport Sedan AT with FRM2 module standard,

firmware version FRM2_E89.C09.

1. Launch NCS Expert Tool, and from the menu bar choose

File

Load Profile

menu…

…select the “Expertmode” profile or “NCS Dummy profile” (depending on what “expert”

profiles you have available or installed), then click on

OK.

These “expert” profiles should give you the necessary access to execute the procedures

outlined below.

2. Click on the

FG/ZCS/FA

button (or press [F1])…

…then the

ZCS/FA f. ECU

button ([F3]).

3. Select the “E89” chassis, click on

OK…

…select “CAS”, “FRM”, or “NFRM” ECU (it doesn’t matter which), then

OK.

This preloads the VIN into NCS Expert Tool so it won’t need to be manually entered for

follow-on operations. NCS Expert is now ready to process ECUs.

4. Click on the

Back

button ([F6])…

…the

Process ECU

button ([F3])…

…select “NFRM” from the ECU list, then

OK.