Tesla will add a "Download Beta" button for FSD Beta to the Service section of the car display in about 10 days from 6 March 2021.

Delivered means a Tesla software update reaching customer cars that put a button in the car display letting owners download, request or opt in to FSD Beta. A label other than 'Download Beta' (e.g. 'Request FSD Beta') is acceptable, and the button may be in the Service section or a closely related menu. The deadline is 16 Mar 2021, which is 10 days after the claim, as the claim itself states ('~10 days'). TRUE: the button reached customer cars on or before 16 Mar 2021. MOSTLY TRUE: the button reached customer cars by 16 Mar 2021, with only a small difference in label or menu location. MIXED: not used, because the claim states a single outcome. MOSTLY FALSE: the button reached customer cars after 16 Mar 2021, however soon after, or by the deadline it existed only for employees or internal testers. FALSE: dated reports or release notes show that no such button had reached customers months after March 2021, or that the plan was dropped.

Set before the research began.

1. E1 Tesla 2021.32.22 software update brings the highly anticipated Request Full Self-Driving (FSD) Beta button Drive Tesla Canada · 25 September 2021

   “The 2021.32.22 release notes contained just one item – “Request Full Self-Driving Beta”, which explains that to access the FSD button you must navigate to Controls > Autopilot > Request Full Self-Driving Beta and follow the instructions.”

2. E2 Elon Musk taunts Tesla fans with yet another Full Self-Driving button promise Mashable · 18 September 2021

   “The download beta button never materialized in March. (Nor in April. Nor in May.)”

3. E3 Elon Musk gives update on timing of FSD beta, the button, and FSD subscription Drive Tesla Canada · 14 April 2021

   “Originally hoping to release “the button” to a large number of Tesla owners sometime in March, then delaying it until at least April, Musk has provided another update on the timing of when it will appear.”

4. E4 Waiting On Tesla's FSD Beta Download Button? Here's What Musk Says InsideEVs · 22 March 2021

   “However, 10 days came and went, and the button isn't yet a reality.”

An InsideEVs report dated 22 March 2021 says the 10 days had passed and the button did not yet exist (E4). Other independent reports say it did not appear in March, April or May, and that Musk pushed its timing back again (E2, E3). Drive Tesla Canada reports that a 'Request Full Self-Driving Beta' button under Controls > Autopilot finally reached cars in software update 2021.32.22 in September 2021 (E1). The criteria say a button that reached customers after 16 March 2021 counts as mostly false, so this late delivery resolves mostly false.