my car has an abs pump 8E0 614 111 A in it but it has the usual problem with them.i got a pump from an a6 8E0 614 111 AH. what does the H on the end mean? both look identical and i just want to fit the module part and it doea fit but i think it has the same fault as my current module so if i get the module from the a6 fixed will it work fine in my a4?