Welcome to Tesla Motors Club
Discuss Tesla's Model S, Model 3, Model X, Model Y, Cybertruck, Roadster and More.
  • Want to remove ads? Register an account and login to see fewer ads, and become a Supporting Member to remove almost all ads.
  • The final cut of TMC Podcast #34 is available now with topics timestamped. We covered Tesla's rollercoaster prices, Toyota pushing junk science, Mike's new Model 3, Optimizing track mode for snow driving, FSD V11 apparently coming by the end of this week, and more. You can watch and check out the chat replay on YouTube.

App won't unlock doors....


Top Supercharger
Jun 19, 2013
Big Horn, Wyoming
I got my MCU 1 replaced and am seeing the following issues:
- App cannot unlock, cannot open trunk/frunk (though it can lock, remote start, honk, flash lighs)
- Voice control is not working. When button is pressed, the mic icon with radiating circles show, but doesn't pick up any words. My mic does work for phone calls though, so it is connected.

I'll contact the SC for the lock issue.
Has anyone seen the voice control issue?

2020.4.1 MCU 1 AP 2.0 Model S
I had similar app limitations after the replacement of my MCU a couple weeks ago. Remote start didn't actually work though. It's related to not having an e-cert, using the parlance I discovered. I let my ranger and ranger's handler know I needed an e-cert and some time over the next few days it was fixed remotely and silently.
Not sure about voice control. That's been hit or miss over the years. Seems to be working fine now.
Just had my MCU 1 replaced. Same problem, lights and horn and lock would work from the mobile app, but several commands just would not work at all, unlock and open frunk and open trunk.

Here was my solution; Turned out the mobile app caches the old security token which will no longer work for those commands, and needed to be cleared by either clearing app data storage or uninstalling the app. Logged back into the mobile app and now all commands work through the mobile app including open trunks and unlock. Phone was sending old invalid security token key and this is why those functions didn't work.
  • Informative
Reactions: dsnows and Bighorn
I tried using the online chat to tell them I was having the same issue. I posted links to the comments here. The guy wanted me to test my physical key which I told him was working fine. Was one of the most frustrating experiences I've ever had with customer service. I just booked an appointment for 2 weeks out to get someone out here. What a waste of time and money.

About Us

Formed in 2006, Tesla Motors Club (TMC) was the first independent online Tesla community. Today it remains the largest and most dynamic community of Tesla enthusiasts. Learn more.

Do you value your experience at TMC? Consider becoming a Supporting Member of Tesla Motors Club. As a thank you for your contribution, you'll get nearly no ads in the Community and Groups sections. Additional perks are available depending on the level of contribution. Please visit the Account Upgrades page for more details.