For whatever reason (probably because of children playing with the phone), Speed Limit Mode got enabled on my mom's Model 3. We don't know the pin. We've called Tesla twice. The first time we were told it needed to be done on their end, and they'd call back, but we haven't heard back. The second time the support person talked about valet mode... which the car is not in... at any rate, anyone else have this happened? There a quick solution? Calling Tesla doesn't seem to help....