Thanks for the reply, guys. Basically, Mobility says I’ll need to get it booked in and see if it’s a manufacturing fault. If the garage says it’s not, I can raise a complaint with Hyundai. The garage was so dismissive this morning, and I’m still waiting on a call back from the service manager. The RAC chap made a good point: typically, there’s heat from the engine to clear snow around that area, but on mine, it just built up and built up.