2019 Sport Heated grips

[Surfcoasttiger]

All of a sudden my heated grips (OEM) have stopped working. Start up routine does not work either.  I have checked the fuse, replaced it and also checked the connection on top of the cylinder head into the main harness, all OK. Thinking it may have had an open circuit in the harness where it wraps around the head step, i did continuity checks, all OK.  I connected my dealer tool and ran  the test mode. When i did the accessory repay test, it came up with an error or not supported. I think it has worked before.  Owners manual does not show which relay is what. I did find a pic on this site but no accessory relay.  Anyone got any ideas?

[mustangpilot]

In the service manual no heated grip relay is mentioned.
The heated grip switch..part #3... failed on my 2017 Tiger Sport. Cause was moisture inside the switch housing. A small crack was found at the back of the switch housing most probably caused by overtightening the bracket .....part #5 ...screws 

[Mike_B]

There may not be a dedicated relay - grips only use a small amount of power, so they may be wired to a switched power source in the loom that covers multiple things.