There is a service bulletin where they replace the breather valves on the Model 3, assuming your car falls within a date range. This is supposed to fix the problem. You may want to check on that. At the same time they may also perform some other small service bulletins.
Yes, that's the one. They performed this service on my Model 3 along with several other service bulletins. One was for the replacing charge port pins. They didn't email me the receipt, so can't be more specific.Are you talking about this: https://static.nhtsa.gov/odi/tsbs/2018/MC-10148827-9999.pdf ?
Not sure the breather values service is the issue in this case.
Also have a 2019 built in Sept and hear these thumping loud metal sounds when supercharging. Been 6x to the SC and heard it each and every time.
Going with the assumption it is normal, if someone has had the sounds go away after a service that would be great to know.
My car does this in winter and colder weather.
Not Supercharger limited. See this:
There was supposed to be the fluff/foam layer somewhere in the battery(top?), but fluffer bot was too slow and people not a whole lot faster, so I think they decided to bypass the fluff and this bottleneck to ramp up production. My understanding anyway, doesn't bother me a whole lot.Ugh, I hate how that guy over reacts to everything.
Anyway, I understand how metal contracts and expands with the temperature, but these bangs are LOUD. I literally got out of the car to walk around on the third loud bang since I felt unsafe sitting on a bunch of batteries with 90+ kW going into them. Also, the sink is empty, run some cross beams over that since it's a ridged structural component, pack it full with stuff, secure it tightly to the car and now think about that expansion happening. It just seems like it can't be good long term with that metal or swelling of cells or anything. His bang is also hollow sounding, mine was like taking a large metallic bar and striking something else metal with it. There's certainly that metallic ping, but then a deep metal bang, like it smashed against something that doesn't flex or budge nearly as much or at the same rate...
Yes, that's the one. They performed this service on my Model 3 along with several other service bulletins. One was for the replacing charge port pins. They didn't email me the receipt, so can't be more specific.
Just drove my 2018 M3 from Bellingham, WA to Indio, CA and my car was thumping hard at every supercharger. Very shocking and I can't imagine its a good thing.
You are almost certainly hearing the contactor and this is normal operation for the car. It is the main disconnect and cycles during supercharging, typically at the beginning and it's a fairly pronounced "CLUNK" sound.
Contactor opening/closing = normal, happens all the time and probably what you're hearing. Normally you hear this when charging starts, you wake-up the vehicle or reset it. Try sitting in your car during a software update and you will hear it thunking away quite a bit!
Metal Flex noise = quieter, typically only happens when supercharging in freezing temps and/or driving with with altitude changes. If you hear a noise in the middle of supercharging and it's cold, it's likely this.