Why do people post this stuff? Unless an issue is shown by the warrantor (Tesla) to be the direct result of a third-party modification (hitch), Tesla is prohibited by federal law to deny warranty claims.
That said, issues like the Model S pioneers who put early hitches on, only to find the galvanic corrosion ate through their car's aluminum, clearly are grounds for a warranty claim against corrosion.
Exactly, why do people post *sugar* like this. Federal law, LOL.
If you add a 3rd party hitch the vehicle WILL NOT know it's towing, for one thing. For safety reasons it automatically will disable stuff.
It may make a multitude of adjustments (well beyond suspension adjustment on Model X) you don't have a clue about.
It might boost cooling on battery or drive units, it might boost 12V charging because of the extra 12V loads.
Just because it's "legal" doesn't mean it's a good idea. I don't have time to fight anything legal. Perhaps you do.
It is clearly stated in the extended warranty on Model S if you tow, you'll void your extended warranty.
I've been denied warranty work for plugging in a trailer brake controller. Were that legally in their right? Of course not, but it was a royal pain in ass. I've seen people get denied defective suspension work because they didn't have OEM wheels.
For a $60K vehicle or $100K vehicle, I wouldn't mess around. Legal or not. If you want to, go right ahead.