Theoretically I guess the 12V system could short circuit, just like any other vehicle. Except there can’t be any gasoline spilled for a short to ignite.
And modern Tesla vehicles, like the Cybertruck don’t use a standard car lead acid car battery (which would have 48Ah or so). Instead they use a 16v small lithium battery (which has only 6.9Ah). Further, this battery system has short protection built into it with an auto resetting breaker.