That is a fairly fundamental set of fixes!
I note that the people in this thread are based in Canada and the USA. Have any other members had the same updates from different regions? If not, it may be worth contacting dealers to ask if we need these updates in other markets (like Europe, Asia, Australia etc.)
Hi Savcom, UK member here. Had to call out Mazda Roadside Assistance for the second time. Both times, with the same issue, the vehicle failed to start.
The first time (05-Feb-2021) I was vacuuming the inside of the car and while cleaning the boot, the power tailgate was stuck in the up position. When I tried to start the vehicle, it would not start. When the Roadside Assistance technician attended, he explained that the power tailgate used a lot of power and after sitting on the driveway for the past week, I had managed to drain the battery. After checking the condition/state of the battery, he restarted the vehicle, using a power bank and allowed it to recharge naturally.
The second time (06-Mar-2021) I washed the car. Learning from my previous experience, I started the car and let it run for close to an hour before switching off the ignition, while continuing with the clean. After around 2 hours I locked the car, however it failed to start when I next went to use it.
Luckily the same Technician attended and explained that he had received a bulletin regarding “battery drain” and that I needed to contact the dealership to arrange for the modules to be updated. He added that ours was the 5th Mazda he had seen recently (3's & CX-30's).
Contacted the dealership and it was booked in (09-Mar-2021). The update took 30mins, no obvious changes and due to COVID we aren't driving the vehicle so it's difficult to tell.