No LTE connectivity

[M3-Florida]

I purchased the board from the service center. Just buying the board and not installing it made mine work again (LOL).

It's been working now for 3 weeks so I will keep the board just in case. I didn't have any software updates immediately before it started working, just an appointment to get the parts price.

 

[Mike1080i]

I purchased the board from the service center. Just buying the board and not installing it made mine work again (LOL).

It's been working now for 3 weeks so I will keep the board just in case. I didn't have any software updates immediately before it started working, just an appointment to get the parts price.

Perhaps I should have given mine a little more time (although the tech did say my board was internally faulting). If it happens again I might try your approach of buying a replacement board as a spare then waiting longer to see if it recovers before I swap it.

 

[M3-Florida]

Perhaps I should have given mine a little more time (although the tech did say my board was internally faulting). If it happens again I might try your approach of buying a replacement board as a spare then waiting longer to see if it recovers before I swap it.

I'd definitely like to know WHY mine stopped working. It has stopped before but recovered within a few days OR a software update. This past time it was a few weeks, so I really figured it was dead. My only thought right now is there was a configuration error with the car (I'm pretty sure Tesla can "reconfigure" it without an official update you have to "install") or AT&T had a configuration issue specific to some devices (I know AT&T couldn't be down for weeks in lots of coverage areas.)

 

[Kevy Baby]

I purchased the board from the service center. Just buying the board and not installing it made mine work again (LOL).

1. How much was the board?
2. Is there a way in service mode to check if the board is iffy? I seem to lose LTE from time-to-time* and have always wondered if something was wrong (since day 1 - I'm a dummy for not having this checked before the warranty expired)

*Frequent "Navigating without traffic info" messages, occasional challenges connecting to the car remotely, etc - nothing intolerable, but an annoyance none-the-less

 

[M3-Florida]

1. How much was the board?
2. Is there a way in service mode to check if the board is iffy? I seem to lose LTE from time-to-time* and have always wondered if something was wrong (since day 1 - I'm a dummy for not having this checked before the warranty expired)

*Frequent "Navigating without traffic info" messages, occasional challenges connecting to the car remotely, etc - nothing intolerable, but an annoyance none-the-less

The board was $110 + tax at the service center.
You can place the car in service mode and under infotainment > connectivity and there is a LTE Antenna and LTE Modem check.

The LTE Modem test will run (for a while) and display a window showing the modem was not reachable and the car tried rebooting the modem and still nothing if it's bad.

I've seen when the modem is out the antennas are also out since they connect the modem and the if modem isn't working, the car can't check the resistance of the antennas either.

Since my car started acting up yesterday again (off and on, not the AT&T outage), I'm going to replace the board today.

 

[Kevy Baby]

Since my car started acting up yesterday again (off and on, not the AT&T outage), I'm going to replace the board today.

Thank you so much for the info! It sounds like the modem is user replaceable? If so, where is it located? Did you happen to get a price to have Tesla replace it?

 

[Kevy Baby]

It sounds like the modem is user replaceable? If so, where is it located?

It looks like I found the answer to the "location" question. Just not sure it is something I want to do myself (I could - just a little too much liability for my preference).

Model 3 Service Manual | Tesla

Correction code 21152802 0.48 NOTE: Unless otherwise explicitly stated in the procedure, the above correction code and FRT reflect all of the work required to perform this procedure, including the linked procedures. Do not stack correction codes unless explicitly told to do so.NOTE: See Flat...

service.tesla.com

 

[Kevy Baby]

I finally got around to testing both the modem and the antennae and it says both are functioning normally. But I am not getting a connection today

 

[kodenco]

I finally got around to testing both the modem and the antennae and it says both are functioning normally. But I am not getting a connection today

Bad timing lol. AT&T looks like it has a outage today, both of our teslas are having connectivity timeout issues in SoCal.

 

[Kevy Baby]

Bad timing lol. AT&T looks like it has a outage today, both of our teslas are having connectivity timeout issues in SoCal.

Not really: it is testing the equipment, not the signal. But I was planning on testing again when things are working normally.

And there is a discussion going on now in this thread.

 

[nicksp]

I can confirm that here in Socal my LTE connection dropped yesterday but it's all good today.

 

[justsomeguy]

My connection started having serious issues earlier this year. Days without connection. Then it was fine for a couple months... now recently I'll go days without connection, and then it'll come back, but drop periodically during the drive. Then go out for days again.

Doing the service mode checks are all green when the LTE is connected, but when it's showing disconnected I get the Antenna is open stuff. Guess I should just buy the board and try to replace it.

I assume the HW2.5 instructions are the same for HW3 Atom cars, wish me luck.