Be carefull. The Phone PSE and VAD voice control units are very common for locking up. Does the Bose amp have light output at the D2B connection
on the amp itself?
DR.D

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Dr.Diesel -
Shop Foreman
Master Guild Mercedes-Benz Technician.

Think the dealer is expensive? Do you know how much it costs to train a dealer tech? Or buy the required MB special tools to have on hand?