FYI, I have an account with Mercedes and spoke to there parts department about getting a module from them. They have 600 in available, but will not sell them except for a Mercedes. The list price is $270.00 for the module. The local Chrysler Dealer told me they are working on a supplier,hopefully by Oct. 15th but do not expect them to be available before December. Chrysler list is $577.00.
I would also like to have a spare one just in case.