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The high-pitched whine during acceleration...
- Thread starter gg_got_a_tesla
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- Driving Dynamics Model S
67mph is just about where motor voltage reaches the max value and can output maximum power.
Is whine always there or only when the power is above some big number? If first then it is the frequency, if second it is the frequency times current...
Is whine always there or only when the power is above some big number? If first then it is the frequency, if second it is the frequency times current...
I think we are talking about two different noises here. The balloon squeal only happens at max throttle or close to it, and i have only heard it on the performance Model S. The other noise is more of a drone, or a hum, at least in my experience.
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It comes and goes. Temperature, humidity state of charge, and many other factors seem to affect whether it will be there when you floor it.
is it a whine or more of a hum? like halogen light buzzing / sodium parking lot lighting . This is what mine has when driving slow and using 'maintenance' throttle
I guess we need to decide what constitutes a hum vs. a whineIn frequency it's somewhere about 6-8kHz.
ow, 7kHz on youtube sounds bad! 6 & 8 too... I think I would describe the hard acceleration whine as something like that, mine is pretty quiet though.
I have that too on hard accel, and always accepted it. This is more annoying. Car has its 12000 mile service tomorrow, we'll see what they say, as this has only been there about 2 months.
Nope, same sound. It doesn't always happen as low as 40-80 (usually requires 160+) but under certain conditions, it'll happen at lower outputs. Either way, it'll frequently happen at 160 which is still lower than the Roadster's max. Others have reported it happening at lower power outputs as well; can't clearly remember if non-performance users have reported it (I think they have but I could be wrong). It varies considerably by car.
I have a very subtle balloon squeal now at 160+ kW with my S60 (I hear it when I punch it to merge into the carpool lane on most days). Not at all as pronounced as the squeal I've heard in P85s during test drives back in 2012 but, it's there.
bareyb
Active Member
Here's a recording of the Balloon Squeal from another thread: Poll: Does your Model S have the "ballon squeal" under heavy acceleration?
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Yes, this is the sound I'm talking about that I have only heard on a performance Model S, pedal mashed.
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bareyb
Active Member
Wow, I didn't realize that the standard cars had that noise. In 13k miles of driving my S85, I have never heard it, and I floor it about every day.
Did you perchance have back seat passengers? I notice it much more when the back seat is empty. If my two teens (about 250 pounds of 'em) are sitting on the back seats I find it is much harder to hear.Did a couple of speed runs with the cousins yesterday and nary a sound. Come to think of it, it's been quite a while since I heard it. Mine seems to have temporarily cured itself.
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