“Navigation Update Required”, nav won’t work

[rsg123]

On my way back from a trip today, the navigation refused to work, stating an update was needed. I hotspotted the car to my phone to connect it to wifi. It never updated. I tried a main screen reboot, then both screen reboot, and even Power Off, wait 5 minutes and awaken. I had to manually figure out my superchargers, and that certainly wasn’t optimal.
Any ideas?

 

[DerbyDave]

It says that the navigation maps are not loaded, like the ones you had are now missing. This may be some other issue with the storage. Use your phone and Google maps to navigate to the superchargers until fixed. Search for "Superchargers Near Me". I'd open up a service request on your phone. They will try pushing you an update.

 

[rsg123]

So the following day after doing all the reboots the “navigation data update required” message disappeared and it was instead stuck on “navigation system is initializing”. The next day (this morning) everything was fine.

 

[DerbyDave]

Tesla would have been alerted of the navigation issue, and likely sent you the data overnight.

 

[rsg123]

It’s back to getting stuck on “navigation system is initializing” again today

 

[DerbyDave]

Time to submit a service request.

 

[Busk]

There’s a micro SD card in your MCU that holds the offline maps. It’s dying. It seems to be happening to more Model S at the moment, as those cards seem to have reached the end of their write cycles or so. It’s actually something you can replace yourself if you know how to take apart the dashboard, temporarily take out the MCU & have some knowledges with Linux & terminal commands. Tesla will bill you a few hundred dollars for the fix. Doing it yourself will cost you the price of the micro SD card and a few hours.

Source: Had this issue. Fixed it myself.

 

[rsg123]

There’s a micro SD card in your MCU that holds the offline maps. It’s dying. It seems to be happening to more Model S at the moment, as those cards seem to have reached the end of their write cycles or so. It’s actually something you can replace yourself if you know how to take apart the dashboard, temporarily take out the MCU & have some knowledges with Linux & terminal commands. Tesla will bill you a few hundred dollars for the fix. Doing it yourself will cost you the price of the micro SD card and a few hours.

Source: Had this issue. Fixed it myself.

Hmm interesting, is this separate from the eMMC repair?

 

[Busk]

Hmm interesting, is this separate from the eMMC repair?

It is. The eMMC is a flash storage that's soldered onto the MCU, used for the OS. The micro SD card is plugged into a slot on the top right of the MCU, behind the panel covering it. It's only used for navigation offline maps.

 

[The Lorax]

Do you know if this SD is replaced as part of the MCU upgrade?

 

[Busk]

Do you know if this SD is replaced as part of the MCU upgrade?

I’d assume so, since the whole MCU unit is replaced. I’m not even sure if that SD is still in MCU2. Maybe someone else knows?

 

[DerbyDave]

I’d assume so, since the whole MCU unit is replaced. I’m not even sure if that SD is still in MCU2. Maybe someone else knows?

I don't think so. It is not included in the MCU specific 8gb card that is replaced. This is a standard SD card that is used just for the navigation. That card can be ejected from the MCU. There is even a slot to do so from the outside without disassembly of the MCU. The SD card was still in use in 2020 models, and I doubt there is a newer revision.

 

[rsg123]

Would the navi SD card failure cause my main screen to sometimes be black when I get in the car and then eventually boot up and an error message on IC stating “center screen unavailable” for a few days?

 

[DerbyDave]

Would the navi SD card failure cause my main screen to sometimes be black when I get in the car and then eventually boot up and an error message on IC stating “center screen unavailable” for a few days?

That sound like maybe the MMC. The SD card is almost entirely offloaded Navigation files. Mostly only Navigation functions would be affected.

 

[rsg123]

That sound like maybe the MMC. The SD card is almost entirely offloaded Navigation files. Mostly only Navigation functions would be affected.

According to this post the navigation card failure mimics some of the eMMC symptoms. I already had my MMC repaired.

 

[Doanster1]

Hmmm, haven’t used nav for a few wks and am now stuck in the “Nav system is initializing” loop as well.
Maybe double up with the LTE retrofit to save labor…
Coinkydink with the 37.6 update? P85D btw.

 

[Doanster1]

Reboot and nav is back, but GPS location is off by a few hundred feet, ie I’ll hit the turn and then get the “In 500ft turn left” instruction.
Will try another reboot later today.

 

[DerbyDave]

The location accuracy should get better over time. If not, Open up a ticket and they can refresh.

 

[Busk]

Rebooting just temporarily fixes this. Be assured: The micro SD card is dying. The problem will worsen over time, until your MCU will wake up with a black screen where the map used to be.

 

[Doanster1]

Rebooting just temporarily fixes this. Be assured: The micro SD card is dying. The problem will worsen over time, until your MCU will wake up with a black screen where the map used to be.

Could be, but a new thread from yesterday has others reporting the exact same thing so unless the timing is impeccable that the SD cards are all failing “simultaneously”, I’m hoping it is indeed the 2020.48.37.6 update.