Thank you for that clarity and it is possible that the units were installed here. Though we would divert that to the dealership for information. It is also possible that the units were changed out, though we don’t know exactly and we would have to pair the part numbers up with what we understand are to be with your units. Most any transducers would work as they all interchange if they are Helix units. There are several transducer generations that have been presented for both DI (3) and SI units.
We would like to speak with your dealership on this and have them communicate with their representative for a resolution.
BCB