Some of them are pretty serviceable at the module level. Ford has done a good job here. Of course, it won't be economical to service them unless someone start

Some of them are pretty serviceable at the module level. Ford has done a good job here. Of course, it won't be economical to service them unless someone starts mass-producing aftermarket modules. I'm keeping my fingers crossed that someone will start making solid state replacements at some point. That could be a nice business if the costs ever get down low enough.