Enabling Cornering Light Function


One of the current 'trendy' features is to have Cornering Front Lights.  Depending on the version of Central Electronics Controller fitted to your car it is entirely possible that this function is already present on your car and it can simply be switched on.

Tools Required - VCDS (VAG-COM)

Applicable Cars - Octavia II and other A5 Platform cars.

To do this first connect your VCDS to the car and carry out and save a full Autoscan.

Currently I have only tested this on the Central Electronics Controller 3C0 937 049 AJ so you will need to identify the controller you have fitted to you car. 

Open controller number 09 and look at the part number in the field marked VAG Number.

09_Cent_Elec_3C0_Open_Controller

With the controller open select Coding 07 which will open a new window like this

09_Cent_Elec_3C0_Recode_Module 

From this screen you'll need to select Long Coding Helper which should look something like this

09_Cent_Elec_3C0_Long_Code_Helper_FogLightCornering 

As you can see we have to change Byte 23, Bit 2 and Bit 3-4.  Bit 2 simply requires a tick in the check box and Bit 3-4 is a drop down list where you should select 08 Turn Lights via Fog Lights.

Once you've made the change choose Exit to close Long Coding Helper and copy the code back to the Recode Module screen.  Once in the Recode Module Screen you should see the new long code inserted into the white box.  Choose Do It and VCDS will validate the code before writing it to the controller and returning you to the Open Controller screen.  At this point it's always worth doing a quick check for stored fault codes that might relate to the changes you've made.

To activate the Cornering Function simply switch on the headlights and turn the steering wheel, it is better to carry this out with the engine running as the steering is easier to turn.  You should see that the front fog lights will illuminate at varying levels depending on the steering wheel position.

Please note that the functions and bit/byte locations may vary depending on which version of controller you have. If you find a variation please contact me with full details and the VAG part number of the controller and I will add it to these instructions.