That's not Service Mode, that's the Service menu.
Go to Software > Tap and hold the Cybertruck logo for a few seconds > this should show a password prompt > type "service" (without the quotes) > This will put you in Service Mode
The "hissing" is caused by the high frequency switching action inherent to buck (stepโdown) converters. There are several things that can be done:
Get a better quality DC-DC step down converter https://amzn.to/428TZ9g
Apply a non-conductive epoxy or potting compound to the inductor to reduce...
Biggest thing would be misaligned panels, especially with the recent Cantrail recall. Also, check for any lifting of the cantrail.
The trim at the top of the tailgate door may also be loose.
The Cant Rail Service Bulletin was published yesterday. https://service.tesla.com/docs/ServiceBulletins/External/SB/SB-25-10-001_Replace_Cant_Rail_Assemblies.pdf
The Tesla Supercharger Fair Use Policy, embedded in their terms, hints at this flexibility. Itโs designed more for referral-based free Supercharging (e.g., 1,000 miles or time-limited perks), where Tesla can restrict access if someoneโs hogging the network or using it commerciallyโlike charging...