I have a 2022 Scala with an extended warranty, which has a towbar which was dealer-fitted pre-delivery. Over the past summer the towbar often wouldn't drop (both from 'stowed' and 'out'), and the switch was not illuminated. It was fairly random and always dropped in the end, so I didn't worry about it too much. Now that we're into winter I have noticed that the boot light often fails to come on, and this always coincides with the towbar switch light not coming on. So I deduce that the towbar system relies on the boot being open to energise the switch (obvious safety feature), which makes me think that there is a problem with the boot light switch. I visited my local dealer today to book it in, and the first step will be diagnostics which I will have to pay for if the fault lies with the towbar itself. So some questions:

1. Is it more likely that the towbar is not working because of the light, rather than that the light is not working because of the towbar?
2. Is there a switch within the tailgate latch, or is there a gravity switch somewhere else?
3. Has anybody else had a similar issue, either with or without towbar?
4. Does this sound like a physical switch or wiring issue, rather than a software or coding issue?

Update - it was the boot light switch, which has been replaced under warranty. The boot light and towbar both work fine now. Something I didn't notice was that the tailgate being open didn't trigger the dash warning showing the image of the car with the tailgate in red. So it was easy for the dealer to diagnose and fix. Not cheap though - over £200 for the boot lock (which includes the switch), plus one hour labour to include coding. Thankfully covered by the warranty.