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Hi, I have a switch underneath my handbrake that I have no idea what it does. If I flick it on it lights up blue but I am none the wiser. Any help would be great. Thank you View attachment 9664
Is there anything which looks aftermarket under the bonnet. I just wonder if its anything to do with a tune. As @gwynp asked what is your model.
 

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Have you resolved what the switch is for.
 
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