Replacement MCU1

[bhansen34]

2017 S100d FSD. Under Warranty. I went in for the eMMC replacement and due to chronic WiFi connectivity issues am having a replacement MCU1 installed. Part says MCU NA PREMIUM-Hardware 2.0/2.5/3.0 -Remanufactured
Has anyone had this done? Can i expect any improvement in overall MCU1 function?

 

[Krash]

Consolidated eMMC Thread (MCU repair) (Black Center Screen)

Congratulations. If only it were so easy for the rest of us to get replacements.

If you post the part number, others will verify that you got the 64GB part, which should make almost everything work well. Most of the debate being what “well” means for the browser.

 

[bhansen34]

Consolidated eMMC Thread (MCU repair) (Black Center Screen)

Congratulations. If only it were so easy for the rest of us to get replacements.

If you post the part number, others will verify that you got the 64GB part, which should make almost everything work well. Most of the debate being what “well” means for the browser.

 

[bhansen34]

My replacement MCU part # is 1098010-90-B
Thanks.!

 

[tbone586]

Question: Does anyone know where GPS functions reside? Is there a GPS board/chips/antenna built into MCU1, or are those external components?

I ask because Tesla Service recently replaced my MCU1 with a "new" (reconditioned) MCU1. Since then, I have a new issue... my GPS guidance is totally wacked out. Shows me skating over waterways, fields and wrong roads while I'm simply driving straight down the highway. Service already has me booked for a follow-up appointment and I'm sure they'll get to the bottom of it. But my first guess is that the replacement part (yes, mine also is # 1098010-90-B) contains faulty GPS components.

Thoughts?

 

[bhansen34]

Well that is sure depressing to hear.!
I got my car back today after 10 calendar days with the reconditioned MCU1 and 64gb eMMC chip.
I think they decided to replace the MCU1 because they duplicated the intermittent WiFi connectivity I have chronically had and could not fix it any other way. So, I get home and guess what. Cannot connect to WiFi even though car is 6 ft. from Extender and iPhone in car picks up network with 30mbps download.Read on teslaTap to do scroll wheel reset and, cross my fingers, it appears to be working for now.!!!

 

[tbone586]

Hope that stays fixed for you! Keep us posted.

I wonder if Service is moving from replacing daughter boards to just swapping out entire reconned MCU's. Would save them time in the service bay since they avoid having to open the removed MCU on site, have someone mess with the insides, swap out the board, avoid damaging the internal cables and other components, etc. They can then send in the original MCU1's and have the interior work done off site in a more controlled fashion. This is all just speculation on my part.

Bottom line: I just want it to work!

 

[tbone586]

Here's an update... Service says they fixed my GPS problem:

"Found replacement MCU is incorrectly equipped and missing gyro board. installed gyro board..."

Can someone tell me where the "gyro board" lives (inside the MCU perhaps?) and what is the part number for such?
If this is an item that's integral to an MCU1, and Tesla installed a "reconditioned" MCU that was missing this vital component, it doesn't say much for their quality control, does it?

 

[Lasttoy]

Did you all get new touch screens with new MCU? My buddy said he got new touch. I need one, leaking. Ranger said it was included.

 

[buddy4406]

@

Lasttoy yes it comes with both touch screen and IC screen.​

 

[EV-Fixme]

Here's an update... Service says they fixed my GPS problem:

"Found replacement MCU is incorrectly equipped and missing gyro board. installed gyro board..."

Can someone tell me where the "gyro board" lives (inside the MCU perhaps?) and what is the part number for such?
If this is an item that's integral to an MCU1, and Tesla installed a "reconditioned" MCU that was missing this vital component, it doesn't say much for their quality control, does it?

They Gryo board is on the modem, inside the MCU. We have also seen a car with a missing gyro, car was used so no idea how it was missing, we installed one for them.

 

[tbone586]

Thanks FixMe. As my saga goes, picked up my car from service yesterday and then returned it 5 min later. While the GPS issue was resolved (with addition of Gyro board), my LTE was malfunctioning, switching into 3G. Now again ready for pickup, after installation of a new "connectivity board" (by which I guess they mean the LTE card.)

So now after my 5th visit to service (two separate attempts at software fixes to my MCU issues, third for install of a recon MCU1, fourth to install missing gyro board, and fifth to replace faulty LTE card that was in the recon MCU)... I HOPE everything is good now!

The guys at the service center are very nice, but clearly the overall quality of service had dropped from prior years, at least in my experience.
"Your mileage may vary.". I hope it does!