It will still log a fault code so make sure to plug it back in before doing any warranty work other wise the tech will end up cursing you after going down a rabbit hole chasing the fault to find you've unplugged it and it's unrelated to the issue you brought the vehicle in for.
But if you wish to unplug it it's a fairly simple process
Remove the O/s + n/s Wiper arms 2x caps 2x 13mm nuts
Remove rubber trim around the scuttle panel, remove the scuttle panel 4x clips I believe
The control unit is located on the drivers side near the top mount follow the wiring to a small sensor about midway along the bulk head and unplug the sensor (make sure to tape the sensor up to prevent any water ingress into the loom)