Guides
Car coding and programming guides
Straight answers to the questions owners and workshops ask most, written by an automotive engineer.
CarPlay activation by model: which VW Group cars can have it switched onA model-by-model overview of which Volkswagen, Audi, Skoda, SEAT and Cupra head units can run Apple CarPlay and Android Auto, and what to check before you book."Component Protection active": what it means and how it's removedFitted a used instrument cluster, radio or gateway and now it's locked? Here's what Volkswagen Group Component Protection is and how a module is adapted to your car the legitimate way.SVM coding explained: why your VAG car needs online coding after a module swapSVM is the step most people skip, and the reason a replaced module shows "not coded" or "software version incorrect". Here's what it does.Mercedes AMG menu activation: what it shows and which cars can have itThe AMG menu adds performance displays to the instrument cluster of many non-AMG Mercedes-Benz models. Here's what you get and how to check if your car qualifies.UK import to Ireland: switching mph to km/h by codingMost German cars imported from the UK can show km/h as the main unit after coding. Here's what changes, what doesn't, and how to check your car.US car imported to Canada: daytime running lights and km/h by codingCanadian rules require daytime running lights, and drivers want km/h. On many German cars both are coding changes. Here's how it works.Why battery voltage matters when you program a carMost failed flashes have the same cause: the voltage dropped. Here's what to use and how to set up before any programming session.Retrofit coding: making a retrofitted part work like factory fitFitting the part is half the job. Here's why a retrofit throws faults until the car is told it's there, and what proper coding involves.