jw97C2S

I've been in contact with several Rennlisters who have been attempting to establish an Aux connection in their Becker CR210. In January of this year I bought the aux kit from Becker and everything worked great for 9 mos until the dealer reset the unit back to radio mode. I cannot seem to locate the instructions to change back to aux mode. I called Becker and they now indicate that the CR210 is not aux capable despite the fact that I purchased and successfully installed their aux kit. They are asking me to let them know if the radio is aux capable (very strange). Does anyone know the button sequence to change back to aux mode?

Thanks
Jim

PS I asked this question recently but my post must have been deleted.