Do all 2021 TRD Pro models come with remote start standard? My dealer says no.

You're probably right about the service connect.

 

All 2021 TRD Pro Tundras have remote start for one year. I think it’s subscription based. You can start it from the app on your phone or if you tap your key fob three times and then hold down the button on the third tap. It should remote start. After the first year it’s like $8 a month or $80 a year. It includes a bunch of other options to that help you track your driving, unlocking/locking your car remotely…etc. I can literally start my truck from anywhere in the country by using the app.