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Unable to drive - Authentication required alerts every hour/two hours?

swt2c

Member
Jan 31, 2021
15
12
USA
Hello!

New Tesla Owner here (CPO March 2017 Model S 75D bought in November, upgraded to MCU2/AP3 in early January).

I've noticed in my alert history that I seem to be getting the "Unable to drive - Authentication required" (GTW_w358) alerts approximately every hour or two hours. This happens when I am definitely not using the car, especially in the middle of the night when the car is parked and locked.

Does anyone else see this or know why this happens?

Screenshot_20210131-125210.png
 

swt2c

Member
Jan 31, 2021
15
12
USA
It's possible that after switching to new hardware, the technician forgot to register them. Please have your service center do an over the air fix.

Register what? The key fobs? If so, perhaps its my second key fob as they only had one of them at the service center.
 

Chaserr

Hyperactive Hyperdrive
Sep 5, 2017
2,658
5,582
Logan
Do you have 2 profiles? Link yours to your fob and then try to link the second profile to a second fob. It will only allow you to link fobs that are detected so if the second fob is under a seat or something you will know.
 

Tam

Well-Known Member
Nov 25, 2012
8,560
7,366
Visalia, CA
Register what? The key fobs? If so, perhaps its my second key fob as they only had one of them at the service center.

No. The key fobs are old. There's no need to tell your car what has been existing all this time.

You need to tell your car there are unfamiliar pieces of hardware that's just invaded into your car: MCU2 and HW3.0 and they are now part of your car, not some kind of foreign invasion.
 

boaterva

Supporting Member
Apr 2, 2016
7,565
3,736
Northern Virginia, USA
It does sound like the fobs aren’t working and the app is being used for drive authentication. When my MCU upgrade was done they needed both fobs. I’d check they did the correct key (authentication key) update and everything. I’ve seen this on the other side, where the app wouldn’t work; but could be the same thing, where the fobs weren’t transferred
 

swt2c

Member
Jan 31, 2021
15
12
USA
Both key fobs are working fine. I haven't noticed any actual problems other than these alerts which happen when the car is parked and locked (which makes me think that the car may be waking up unnecessarily and wasting energy). I haven't contacted the service center yet. I have done a power down though and the alerts still persist. They were also happening before I installed 2020.48.35.5 as well.
 

KalJoMoS

Member
Aug 11, 2019
318
189
EETN, EST
I have noticed this as well, similar alerts biles up during night time, or when the car is parked (although have not checked is the code same). Can’t say since when but this behaviour has not been known before. My car is on 2020.48.12.1. so it’s AP1 car from 2016. Still on original MCU1 and no recent service been done. Also no issues detected during everyday driving. This last update was done early in January.
 

swt2c

Member
Jan 31, 2021
15
12
USA
I have noticed this as well, similar alerts biles up during night time, or when the car is parked (although have not checked is the code same). Can’t say since when but this behaviour has not been known before. My car is on 2020.48.12.1. so it’s AP1 car from 2016. Still on original MCU1 and no recent service been done. Also no issues detected during everyday driving. This last update was done early in January.

OK, so probably nothing to do with my MCU2 & AP3 upgrades, but more likely due to recent software updates.
 

gaswalla

Model S,3,X.. CT with Austin delivery
Sep 23, 2012
3,298
3,582
San Diego
This is definitely related to the MCU2 upgrade. Common problem of tech not registering the fob. Just take it back to the service center.
 

KalJoMoS

Member
Aug 11, 2019
318
189
EETN, EST
How come it’s related to MCU2 upgrade when my car was last serviced more than a year ago and it was nothing to do with MCU? I suspect that in the recent SW update something have triggered this alert as I do not see it when I enter the car and it has no impact on everyday commute (so far...). Will try to get into the recent history of the alerts tomorrow, when I have any need to drive...
 

gaswalla

Model S,3,X.. CT with Austin delivery
Sep 23, 2012
3,298
3,582
San Diego
OP had the upgrade recently and this is a common issue after the upgrade, due to a missed step in the install. If you’re on MCU1, may be relayed to emmc failure impending
 

swt2c

Member
Jan 31, 2021
15
12
USA
OK, I'll contact the SC.

OK, so I contacted the SC. They said that the "authentication required" alerts were due to me having Passive Entry turned off. I turned on Passive Entry yesterday and sure enough, no "authentication required" alerts overnight.

I think I prefer to keep Passive Entry turned off, so I guess I can just ignore the alerts. Seems like a bug to produce those alerts, though.
 

KalJoMoS

Member
Aug 11, 2019
318
189
EETN, EST
I can’t confirm this, my Passive entry is/was still on. Unfortunately the car is not keeping longer history than two days and as of that I found today something different. I haven’t used it for three days and according to the history the car was notified that navigation data was not available. Doesn't it alerts if you try to start a route? And my nav. data was/is up to date when I opened the menu. Photos attached.
9989354E-57A5-4314-B1DA-D7457B394CF0.jpeg

5F29DEB4-A009-4301-B89A-071695F14CF5.jpeg
 

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