ECU Key Programing
Author
Discussion

Sir.Rothschild

Original Poster:

28 posts

55 months

Monday 4th April 2022
quotequote all
Hello All,

I'm debating buying a spare ECU Crystal key and having it programmed for my V12V. The question is, are the codes displayed in the attached what is needed for programming? If so, what does the dealer charge to program these keys?

Thanks All


anonymous-user

83 months

Monday 4th April 2022
quotequote all
You have two options.

First, buy a spare crystal key with innards and have the dealer reprogram it to match your car. From memory there is a set of codes that come with the innards that the dealer requires to do the reprogramming. Then you have three keys (two crystal and one valet).

Second, buy a spare crystal key with or without (cheaper without) innards, and move the innards from your courtesy key into the new crystal key. All you need to do this is a very small screwdriver - an optician’s set. Then you have two keys both of which are crystal.

Option 1 is expensive. I went for option 2, bought another one of those AM leather covers for it, and resolved never to let a valet park my car.

The inside of the key has two components: a printed circuit board which is controlled by the buttons on the fob and which unlocks the car, and a small black hockey puck thing that is the transponder that talks to the ignition and lets the key start the car. A new PCB can be programmed to control the locks (I forget how, now) but it’s the transponder that requires codes and AM dealer intervention.