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Groan when making 90 degree slow speed turns
- Thread starter TLLMRRJ
- Start date
Hayseed_MS
Spreader of "Endless Non Sequitur"
So why does it only make that noise when making sharp turns and not regen while going straight?
The noise you are hearing from 1-3 seconds is the ridiculous amount of gear whine my front drive unit makes. That gear noise is there even if I put the car in neutral, so it is definitely not regen noise. As an engineer, and life long car nut, that gear noise is very not ok in my book either, but that's a different topic.
The groan for this poll is from 4-5 seconds in the video that starts when the wheel is turned. I had to cut the video short because all the parking sensors were annoyingly sounding off false alarms due to the driveway which only has a very slight slope, but that's a different topic that I won't be bothering anyone about.
That's very interesting. I have not heard anything like this noise on our Y or 3, and as I understand it, the front drive unit on the MS LR comes from the 3/Y, but the noise almost seems like the brakes are dragging.
Thinking out loud, I'll check if I have the option turned on to use the physical brakes to assist the regen and test with that feature turned off if it's on.
So i switch from hold to creep, and no more noise, and I also tried to apply brakes while on creep mode, turned wheel all the way and stop. Also no noise. Turn hold mode back. And noise is back. Let me know if you try that and has same result. I’ll bring it to service and will report back
Well, I don't see the hold and creep option in my Model S options, so no way to change that setting. Other things are missing on the Model S for some reason.
I did turn off the friction brakes assisting the regen braking, but that didn't make a change in the groan.
With the car parked, first turn the wheel all the way to lock , then get out and inspect the inner fender well liner for contact with tire or wear. Repeat for the opposite turn.
If you see wear make sure all the clips for the liner are in place and engaged.
Not a big worry.
If you see wear make sure all the clips for the liner are in place and engaged.
Not a big worry.
I don't have this noise but from what I am hearing it sounds like the power steering pump to me. It's too high frequency to be a low speed wheel rub and it only makes the sound once you approach the last 30% or so of the steering angle available?
So maybe as the steering angle increases at low speed there is more torque required to turn the wheel which increases the demand on the steering pump so it ramps up creating that noise.
The refresh cars have a wider track and wider wheels. Unsure of the offsets on the offsets on the wheels but if they have large offsets that would increase the amount of force needed to turn them do to scrub.
So maybe as the steering angle increases at low speed there is more torque required to turn the wheel which increases the demand on the steering pump so it ramps up creating that noise.
The refresh cars have a wider track and wider wheels. Unsure of the offsets on the offsets on the wheels but if they have large offsets that would increase the amount of force needed to turn them do to scrub.
hmmm, you are correct. Goes that theory but I still think the noise is coming from the rack.
It sounds more like brake dragging to me. I had an old car with some issues with the right front caliper from age, and it made this noise when the front right brake was dragging.
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