Welcome to Tesla Motors Club
Discuss Tesla's Model S, Model 3, Model X, Model Y, Cybertruck, Roadster and More.
Register
  • The final cut of the 9th episode of the Tesla Motors Club Podcast, featuring Balazs Biro, of the prominent Hungarian EV channel Villanyautósok, is now available. You can watch it now on YouTube or listen to it on all major podcast networks.

Key Fobs don't differentiate

I had to replace one of the original keys early on. I wonder if anyone knows how to to definitively assign the fobs themselves so they are always #1 & #2? I think the car is confused as to which is which as it seems to lose the settings, then the only option is to associate both drivers with "Key Fob 2". Any thoughts?
 

DCGOO

Active Member
Supporting Member
Nov 24, 2015
2,049
1,343
Indianapolis, IN
I had to replace one of the original keys early on. I wonder if anyone knows how to to definitively assign the fobs themselves so they are always #1 & #2? I think the car is confused as to which is which as it seems to lose the settings, then the only option is to associate both drivers with "Key Fob 2". Any thoughts?

This requires a trip to the Service Center. Mobile Service might also be able to help, but they will be reluctant to tie up a ranger for that. The SC should have made sure the fob was registered uniquely, before you left the site. They will require both fobs to fix it.

There apparently are a number of idiosyncrasies with the Model X, that make this very difficult. You will not be able to fix this yourself. I had a failure of the Central Body control module (which is the device that detects the bluetooth signal from the fob). It took them 30 odd minutes to replace the control module. But it took them many hours over two days to get the fobs correctly registered. They actually burned through five fobs to get me two that were uniquely distinctive.
 
  • Informative
Reactions: Silicon Desert
Upvote 0

jboy210

Well-Known Member
Supporting Member
Dec 2, 2016
6,528
4,459
Northern California
Wew, i never imagined one may have to go through all of this to replace a key fob battery. My MX is approaching 2 yrs so I am not sure when I will get the call to replace the batteries
Just replace the batteries yourself. We have done this will no ill effects.

The only issue is getting the correct battery, CR2354, they are not in every store and you will likely have to order. Don't use the similar-sized CR2032 which you can find at every Supermarket.
 
  • Like
Reactions: peety3
Upvote 0
The only issue is getting the correct battery, CR2354, they are not in every store and you will likely have to order. Don't use the similar-sized CR2032 which you can find at every Supermarket.
^ This. Order a pair from Amazon and stow them in your box o' batteries. Cheap insurance for a big surprise. I'd assume the batteries on the shelf last longer than the batteries in the fobs, so even if they sit a while, they'll keep you going long enough to order another set.
 
Upvote 0

Products we're discussing on TMC...

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.


SUPPORT TMC
Top