I wonder if they were "testing" it after the parts were replaced to ensure the DSC/DTC etc was all working correctly...
If they were doing a "real world" test of this it would involve spanking the sh*t out of the car to see if the electronics stepped in to recover any slide. This driving style would quickly see a reduction in the service interval...
I personally would raise it but that's from a laymans point of view.
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