Steering Assist Reduced

[derotam]

I'm starting to think this is a problem I cannot solve externally. I'm very tempted to get off the Beta, as I think Tesla Vision started all this.

I think your line of reasoning about getting the errors due to the system getting bogged down by something is a little much. I'm not saying it couldn't happen but I think it is unlikely. I am assuming you have fully ruled out an SSD relation as well as it being related to a bluetooth connection?

Did you every attempt to track down if there is a separate ground wire for the steering assist motor and verify that connection is good?

I don't think Tesla Vision has anything to do with this either or one would think there would be other reports of this happening.

I think a bad ground connection is definitely a good candidate to look into. Ground issues can do all kinds of funny things to cars.

 

[MagnusMako]

My friend just picked up his 2023 model 3 SR. He's had it a few weeks and is at around 923 miles on the ODO. He was recently getting small vibrations trying to turn the wheel left or right. He did a reboot to fix it, and it went away but now has a complete loss of power steering. Went through several reboots. Talked with Tesla service and they're saying it has to be towed to the Service Center.

Anyone else experienced similar?

 

[mknewman]

One reason I thought it was overloaded CPU is there would be stuttering in the reverse camera.

I have it at Tesla today and will let y'all know what they find (hasn't happened for a week!). Had the appointment 2 weeks though and they saw all the errors in their logs.

 

[mknewman]

Ok, so I just got word from Tesla that the wiring harness is corroded and the steering rack will be replaced, along with an alignment. $3200.

Here are the pics of the wiring.

This car just turned 5 years old.

 

[MagnusMako]

My friend just picked up his 2023 model 3 SR. He's had it a few weeks and is at around 923 miles on the ODO. He was recently getting small vibrations trying to turn the wheel left or right. He did a reboot to fix it, and it went away but now has a complete loss of power steering. Went through several reboots. Talked with Tesla service and they're saying it has to be towed to the Service Center.

Anyone else experienced similar?

Looks like SC replaced the steering rack in my friends 3 week old 2023 model 3. This is probably related to the issue being investigated by the NHTSA:

Tesla under investigation for Model 3 and Model Y steering wheels that freeze up

The steering wheels get stuck and lose power.

www.theverge.com

 

[mknewman]

Don't drive through water. $4200. Had to replace wiring harness in front.

 

[Brewmyown]

My friend just picked up his 2023 model 3 SR. He's had it a few weeks and is at around 923 miles on the ODO. He was recently getting small vibrations trying to turn the wheel left or right. He did a reboot to fix it, and it went away but now has a complete loss of power steering. Went through several reboots. Talked with Tesla service and they're saying it has to be towed to the Service Center.

Anyone else experienced similar?

This symptom is exactly what happened to me. I have about 6,000 miles on my 2023 M3. My service appointment is on Tuesday 9/19/23

 

[mknewman]

At least he has a warranty. Mine went out before I had the issue.

 

[MagnusMako]

At least he has a warranty. Mine went out before I had the issue.

I thought this was a known 2023 model 3 issue so the warranty should be valid. When was yours produced? How much did it cost you to fix?

This thing is under investigation by the NHTSA so if it turns into a recall then I'd imagine you are owed a refund for the repairs.

 

[mknewman]

I thought this was a known 2023 model 3 issue so the warranty should be valid. When was yours produced? How much did it cost you to fix?

This thing is under investigation by the NHTSA so if it turns into a recall then I'd imagine you are owed a refund for the repairs.

Mine was a 2018. 51k miles. $4200 to replace the steering and front harness.

 

[mirkop82]

@mknewman, is there any way to reach those connectors and the harness to do a check without disassembling the steering box?
I'd say it's way too premature to see such corrosion in 51k miles!

 

[mknewman]

I don't know. Go for it I don't work around high voltage.

 

[Brewmyown]

This symptom is exactly what happened to me. I have about 6,000 miles on my 2023 M3. My service appointment is on Tuesday 9/19/23

Update: The service center replaced the entire steering rack under warranty. They also did a full wheel alignment. I got the car back the following afternoon.

 

[Figo7966651]

Mine was a 2018. 51k miles. $4200 to replace the steering and front harness.

Do you mind sharing a snapshot showing how much is for the front harness replacement only? I suspect you only need to replace the harness since the corrosion is causing the problem. And probably a grounding connection of the steering motor as some other posts suggested.

 

[ODWms]

I’m thinking same. Why would the steering rack have anything to do with this, once it’s determined to be a result of water contamination in the wiring harness? Sounds crazy.

 

[mknewman]

I’m thinking same. Why would the steering rack have anything to do with this, once it’s determined to be a result of water contamination in the wiring harness? Sounds crazy.

Steering harness plug was corroded

 

[arrow7]

My friend just picked up his 2023 model 3 SR. He's had it a few weeks and is at around 923 miles on the ODO. He was recently getting small vibrations trying to turn the wheel left or right. He did a reboot to fix it, and it went away but now has a complete loss of power steering. Went through several reboots. Talked with Tesla service and they're saying it has to be towed to the Service Center.

Anyone else experienced similar?

On my 2023 RWD, after 1800 miles mine went out a couple months ago, it made the news at the time that the government was investigating (ha ha) why this happened so much and people might get hurt. I drove mine (was hard) to the service center and got to drive the piss out of a performance model as a loaner for a few days. Replace steering rack. All good.

 

[colettimj]

Had this same error message pop up about two weeks ago. The message did not return after the car was parked overnight, but I made an appointment with Tesla in Cherry Hill NJ. The tech found corrosion on the wiring, cleaned and tested conductivity. Just under $150 for the repair. 2018 LR RWD Model 3, 69K miles.

I never drove the car through water (unless rain/puddles count) so I'm wondering how permanent a fix this will be.

 

[justinhow]

Ok, so I just got word from Tesla that the wiring harness is corroded and the steering rack will be replaced, along with an alignment. $3200.

Here are the pics of the wiring.

This car just turned 5 years old.

I have just started having similar problem with the Power Steering intermittently failing (UI_a020 "Steering Assist Reduced"). I am unfortunately 90 miles away from a service centre so its no easy to just drop it in and pick it up.
Do you know whether there is anyway for me to check for this corrosion issue, or is that actually pretty difficult?
If found this to be the likely cause I could prep the Tesla Service centre and this would probably reduce the visit duration (time without car etc) considerably.

 

[P3dStealth]

There are a few grounds visible when you take the frunk out. Not sure which one it is but just try to follow the steering column to the electric power steering unit. Then look for a wire going to the cars chassis and see it it's corroded.

I wonder if this article is talking about this same issue.

https://www.reuters.com/business/autos-transportation/tesla-recall-over-2-mln-vehicles-us-nhtsa-2024-02-02/