I think it’s a fairly common issue - a rattle/chatter, most noticeable at low speed when you can hear it above the road/wind noise. And if you don’t have music playing, obviously
It is documented here:
I have a refreshed 2017 75D with smart air suspension and only 2K miles. I recently notice some strange noise coming from the front suspension. The noise (which like clink-clunk/click-clunk, like something is loose) is most noticeable when I slowly going over speed bumps. I took the car to...
teslamotorsclub.com
Here are the notes from the service invoices where I took it in (twice):
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Corrections: Exterior NVH General Diagnosis
Carried out exterior NVH general diagnosis. Customer complain has been confirmed. Performed road test to identify noise. Upon investigation found both front air spring modules to be at fault. Carried out replacement on both front springs modules. Check operation by performing a road test, all OK.
Corrections: Air Spring Module - Front - LH
Carried out front left air spring module replacement. Check operation by performing a road test, all OK.
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Concern: Rattling noise from front suspension on rough or bumpy roads - low speeds
Customer concern confirmed, carried out replacement of front struts and strut braces and carried out bulk head rivet mod. Torque checked all suspension fasteners and checked condition, all okay.Noise still present, contacted engineering and they confirmed that this issue is currently being investigated and a revised part will be available shortly. This is not a safety concern and will not effect the handling of the vehicle.
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After that visit, I had to take it back for some other work and mentioned it again. They said they found a loose cable loom and after fixing that they said they found no other faults. I felt like they were closing out the issue at that point