They glued a piece of plastic in the accelerator, just screw up the top part of the box that's above the throttle and you can just pull it out.
Or at least that's how it works on the 2014 model, am not 100% sure if it's the same on the 2015
Or at least that's how it works on the 2014 model, am not 100% sure if it's the same on the 2015