My second superb has developed an unusual problem. Passenger seat heater won't turn off. No matter what I do, it stays on. Switch appears to work ok, you can select level of heating 1-3 and turn it off, but heater actually stays on. What is even weirder, yesterday this drained the battery, the heater stays on even when there is no contact and the car is locked. I found a temporary solution when I removed the fuse for front heated seats..

 

Any ideas?

Sounds like a wiring fault - get it looked at immediately!!!