How to enter service mode in Ford 6000 CD radio unit (C-Max Focus Fiesta Mondeo Transit)

Thanks to hidden service mode in Ford 6000 CD radio unit, you can access information like software version and in some units also serial number needed for lock code generators.
Turn on the radio and press and hold buttons 6 & 1.
Ford 6000 CD radio unit can be found in:
Ford C-Max MK1
Ford Fiesta MK6
Ford Focus MK2
Ford Galaxy MK2
Ford Fusion
Ford Mondeo MK3
Ford S-Max
Ford Transit MK7
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