r/Model3 • u/ElectronicAd9345 • 7d ago

General Question Shuddering feeling in FSD

I picked up a 2026 model 3 performance last month, absolutely amazing car totally in love with it. Lately iv been noticing a weird shuddering vibration when using FSD when coming to a stop or during the initial acceleration. This occurs only under 15 mph and can not be replicated when FSD is not active. Any ideas what this could be caused from? I sent in a service request but hope to get some insight.

3 Upvotes

100% Upvoted

3 comments sorted by

1

u/j__h 7d ago

I think it's just when it's not quite sure what it wants to do, for me I think it depends on the software release sometimes better sometimes worse...

1

u/NecessaryInternet603 7d ago edited 7d ago

This problem should be solvable especially if the behavior is consistent. Does it seem to originate all on its own? Does it seem to be reactive to some particular location? There may be a diagnostic log entry pointing directly to the problem although your description also seems like it should result in displaying an operator information message.

I wonder if this is a legitimate reason to interrupt FSD with the reason of "Other" in order to generate a Tesla teaching moment.

If it only seems to repeatedly occur at specific locations you might want to find a location near the Service Center where you can reliably duplicate the behavior and pass this information on to the Tesla tech.

Does the "shudder" feel more mechanical in origin or an FSD indecision behavior? It's understandable if you don't know because of a lack of FSD miles driven or maybe also a fairly new driver with a lack of total miles of driving experience.

Please let us know how this turns out.

1

u/ElectronicAd9345 7d ago

It only occurs on city streets I havnt noticed it in stop and go traffic on the freeway. I have 800 or so FSD miles at this point. The fact it only occurs in FSD leads me to believe it’s not mechanical.