CraigB

As long as the seller sells you true canbus error free bulbs your ok - the rest is in the hands of god.
Seriously, in my experience exterior bulbs will definitely have to be error free (or you will have to use them in conjunction with one of those error cancelers) On 'the bay' just search for example: LIGHT BULBS ERROR FREE CANBUS, CANbus LED Control Unit, etc. Choose the bulbs that suit your car and hopefully all should be OK. When I upgraded mine the DRL were already wired up error free so were the wing mirrors LED's. I've just bought LED's for low beam but I'm not sure if they are already error free. I hope that's the case.