[danyro]

I have already fitted from factory kafas hba etc and i am targeting by this upgrade the traffic jam assist.

If i would be in your place, yes, i would first try to reset rear brake pads from kombi and if everything is ok, proceed with the front ones.

Even if the CBS will not reflect the reality of wearing, when the brake pad sensor will start to touch disk brake, the DSC will give insrantly warning on kombi even cbs has much more km until brake pad replacement is required.
Just assure twice that you have brake pad sensors well secured on brake pads front/rear