Broken at delivery: Critical Steering Issue Detected & Loss of System Redundancy Detected

[Carlos Thomas]

I had the same issue. If you go to the ALERTS you will see all the errors. I guarantee there were about 15+ errors because the item that is faulty is connected to numerous systems. However, if the vehicle is not with you, you can't check and see it. Drove it three times and had three breakdowns. You can do the reset. It will only buy you time until it happens again. Luckily for my when it happened I was going 25 mph, 41 mph and 13 mph.

My Cybertruck was towed in and they identified the problem. It is the "Bed and Backbone Harness - Harness - LV Backbone". That is what they call it. It is the Low Voltage (48v) Harness which many other systems reply on, so once that goes, everything else has to trigger an alert/error. The part was faulty and had to be special ordered from Austin.

What I don't know is if the replacement part the same part or a new & improved part. If it is a new & improved part, folks are going to be lining up for it or some sort of recall. If it is the same part, I think it is more of a hope that it was a rare occurrence as others driving 1000's of miles haven't had that issue. I think if one of the folks who gets the repair comes back for the same issue shortly there after, they probably have a problem on their hands. Only time will tell.

According to the service manual it is a 78 step process to get to the Low Voltage Harness and to put everything back. They actually have to remove a lot of stuff. My Cybertruck is close to being finished, so I will report back as I have updates.

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[cgladue]

seems to be a pretty common issue that half a dozen people have had, hopefully its resolved by the time i take delivery

 

[supergeek18]

I had the same issue. Drove it three times and had three breakdowns. My Cybertruck was towed in and they identified the problem. It is the "Bed and Backbone Harness - Harness - LV Backbone". That is what they call it. The part was faulty and had to be special ordered from Austin.

What I don't know is the replacement part the same part or a new & improved part. If it is a new & improved part, folks are going to be lining up for it. If it is the same part, I think it is more of a hope that it was a rare occurrence as others driving 1000's of miles haven't had that issue.

According to the service manual it is a 78 step process to get to the Low Voltage Harness and to put everything back. They actually have to remove a lot of stuff. My Cybertruck is close to being finished, so I will report back as I have updates.

I had the same issue. If you go to the ALERTS you will see all the errors. I guarantee there were about 15+ errors because the item that is faulty is connected to numerous systems. However, if the vehicle is not with you, you can't check and see it. Drove it three times and had three breakdowns. You can do the reset. It will only by you time until it happens again. Luckily for my when it happened I was going 25 mph, 41 mph and 13 mph.

My Cybertruck was towed in and they identified the problem. It is the "Bed and Backbone Harness - Harness - LV Backbone". That is what they call it. It is the Low Voltage (48v) Harness which many other systems reply on, so once that goes, everything else has to trigger an alert/error. The part was faulty and had to be special ordered from Austin.

What I don't know is if the replacement part the same part or a new & improved part. If it is a new & improved part, folks are going to be lining up for it or some sort of recall. If it is the same part, I think it is more of a hope that it was a rare occurrence as others driving 1000's of miles haven't had that issue. I think if one of the folks who gets the repair comes back for the same issue shortly there after, they probably have a problem on their hands. Only time will tell.

According to the service manual it is a 78 step process to get to the Low Voltage Harness and to put everything back. They actually have to remove a lot of stuff. My Cybertruck is close to being finished, so I will report back as I have updates.

Mine is intermittent and the service center hasn’t been able to reproduce for 6 days, although it happened to me 3 times when I took delivery. At this point I’m asking to get the car back and if it happens again I’ll report again and either drive it back to service or get it towed if needed. So annoyed.

 

[Carlos Thomas]

Mine is intermittent and the service center hasn’t been able to reproduce for 6 days, although it happened to me 3 times when I took delivery. At this point I’m asking to get the car back and if it happens again I’ll report again and either drive it back to service or get it towed if needed. So annoyed.

If I were you, I would tell them what the Dublin California Service Center discovered and their remedy. They can see the alert codes that were triggered. No need to try and replicate. They need to use the data they have access to. If this was a plane and it was throwing detailed error codes, the plane would not go in the air again without some sort of repair being done. Tesla has enough information to ID what the potential issue is. When they told me that is was the Low Voltage 48v Harness, it made sense. I assume Tesla Service Centers & Corporate share information.

 

[supergeek18]

If I were you, I would tell them what the Dublin California Service Center discovered and their remedy. They can see the alert codes that were triggered. No need to try and replicate. They need to use the data they have access to. If this was a plane and it was throwing detailed error codes, the plane would not go in the air again without some sort of repair being done. Tesla has enough information to ID what the potential issue is. When they told me that is was the Low Voltage 48v Harness, it made sense. I assume Tesla Service Centers & Corporate share information.

I will thanks!

 

[Crissa]

That low voltage harness is always the weak point in any EV. It carries all the control and power for the computers and controllers and if installed the least bit wrong, it's likely to break a connection or corrode. They need certain handling going in, certain seals and clips all have tomwork right, go around sharp corners, etc.

It's basically an ethernet cable on steroids that can die if tweaked wrong.

And it's a pain to replace. I wonder if they managed to get the rigid version into the Cybertruck?

Either way, it's just so easy to get a fault in these, and it takes a bit of shakedown to figure out all the mistakes that can happen. And then it basically stops happening.

-Crissa

 

[Gigahorse]

That low voltage harness is always the weak point in any EV. It carries all the control and power for the computers and controllers and if installed the least bit wrong, it's likely to break a connection or corrode. They need certain handling going in, certain seals and clips all have tomwork right, go around sharp corners, etc.

It's basically an ethernet cable on steroids that can die if tweaked wrong.

And it's a pain to replace. I wonder if they managed to get the rigid version into the Cybertruck?

Either way, it's just so easy to get a fault in these, and it takes a bit of shakedown to figure out all the mistakes that can happen. And then it basically stops happening.

-Crissa

Didn't the 48v system replace most of those weak points in that wiring system?

 

[supergeek18]

? no just trying to keep your spirits up…

Appreciate it

 

[ituner-HF]

That low voltage harness is always the weak point in any EV. It carries all the control and power for the computers and controllers and if installed the least bit wrong, it's likely to break a connection or corrode. They need certain handling going in, certain seals and clips all have tomwork right, go around sharp corners, etc.

It's basically an ethernet cable on steroids that can die if tweaked wrong.

And it's a pain to replace. I wonder if they managed to get the rigid version into the Cybertruck?

Either way, it's just so easy to get a fault in these, and it takes a bit of shakedown to figure out all the mistakes that can happen. And then it basically stops happening.

-Crissa

It might not be a bad cable, esp if seen in multiple Cybertrucks, there is comm redundancy built in much like a ring, IMHO it could be due to noise from an ethernet-like line driver.

 

[Tedacules]

Critical steering issue - Loss of system redundancy (intermittent)

Had delivery on March 1 and got a giant red PULL OVER SAFELY, critical steering issue detected alert on my first attempt to put it into drive. It went away after getting out of the car and getting back in, but comes back again when stopping, getting out, and getting back in to drive again. My Cybertruck went directly from delivery to service (very sad) and Tesla has been diagnosing the issue for 5 days. They still don't know what's wrong with it.

Anyone else have this issue?
Do I hold the record for the worst/most unlucky Cybertruck delivery experience so far?

Looks like bad luck so Sorry for you.

 

[jf64k]

Tough spot to be in, OP.

I hope they get you fixed up quickly!!

 

[supergeek18]

Welp I just went over to service today and asked them to give me the car back. They were not able to reproduce the issue (don't know what they did for 6 days "diagnosing" the issue) and did a test drive before giving it back to me... Weird experience but glad I finally got it back. Everyone at service was super friendly.

 

[wayne]

Wow there’s a lot of people that are bitter it’s a truck!

 

[Carmino]

Welp I just went over to service today and asked them to give me the car back. They were not able to reproduce the issue (don't know what they did for 6 days "diagnosing" the issue) and did a test drive before giving it back to me... Weird experience but glad I finally got it back. Everyone at service was super friendly.

"Sorry, we can't replicate the issue" seems wildly unacceptable.

 

[JBee]

Welp I just went over to service today and asked them to give me the car back. They were not able to reproduce the issue (don't know what they did for 6 days "diagnosing" the issue) and did a test drive before giving it back to me... Weird experience but glad I finally got it back. Everyone at service was super friendly.

Do you know how to go into the service mode and access the error logs? Info is in the service manuals on the Tesla site. If it happens again, and your screen is on I'd try to take pictures of as much detail as possible. From what I know it's also possible to monitor via the OBD2 port, which requires a $20 bluetooth adapter and a phone app.

With that you should be able to get it permanently fixed. Also don't forget that to use the emergency brake you need to press and hold the overhead console P button, or the on screen one if its working.

Stay safe!

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