
I just got my car back - total of 5 months waiting for the motor, and 7 weeks for the battery. Has anyone else had a motor replacement? My car seems much more tame (sluggish acceleration) with the new motor. It is, however, a heck of a lot quieter than it was before!teaguecl wrote:Looks like I'm next for traction battery replacement. Car was gently used, 50K miles, no real issues until recently. It died while in motion and accelerating. Toyota has had the vehicle for 6 weeks, and have just notified me that both the motor and traction battery are being replaced. Unfortunately, they don't have an ETA for getting the parts from Tesla - anecdotally they say the last battery they ordered took 3 months. So I'm without a vehicle for 2-5 months
My car felt exactly the same after I got it back from drive unit replacement for noise last year. It was just much quieter. I only waited 2 weeks for the motor to come in and it was installed within one day.teaguecl wrote:I just got my car back - total of 5 months waiting for the motor, and 7 weeks for the battery. Has anyone else had a motor replacement? My car seems much more tame (sluggish acceleration) with the new motor. It is, however, a heck of a lot quieter than it was before!teaguecl wrote:Looks like I'm next for traction battery replacement. Car was gently used, 50K miles, no real issues until recently. It died while in motion and accelerating. Toyota has had the vehicle for 6 weeks, and have just notified me that both the motor and traction battery are being replaced. Unfortunately, they don't have an ETA for getting the parts from Tesla - anecdotally they say the last battery they ordered took 3 months. So I'm without a vehicle for 2-5 months
It's a bit disappointing to have a "normal" noise where once it was silent.Telsa Tech Note TN-13-16-002 R1 wrote: TN-13-16-002 R1 Tesla Motors Inc
September 12. 2013 Tech Notes
Tech Note: Battery Contactor Squeal
Tech Notes are internal announcements that help to communicate and track new information about Tesla Service concerns
This Tech Note supersedes TN-13-16, dated 22-July-22 [sic]. [ . . . ]
What the Customer Sees
A customer might notice a squealing sound from the rear of the vehicle while driving, usually during hard acceleration. The sound often begins around 40 MPH during heavy throttle, but can sometimes be heard at lower speeds and lower throttle positions. This noise has recently been mis-identified on public forums by some customers as delamination of the windings in the stator. It is actually unrelated to the motor.
What the Technician Sees
The squeal can differ slightly from vehicle to vehicle. It is a high-pitched tone that has been described as 'air escaping from a balloon' or as a steady, almost electronic tone. The tone might waver slightly with accelerator pedal position. It is not the same as the"spool-up" whine that is normal during hard acceleration, and does not have a rising pitch.
If the noise is identified as rear acceleration squeal after a test drive by the Service technician, do not attempt any kind of repair.
What to Tell the Customer
While electric vehicle powertrains are significantly quieter than vehicles with an [sic] internal combustion engine powertrains, they are not completely silent; they emit both mechanical and electrical sounds that might seem unusual at first to occupants of the vehicle.
The Model S Performance features a 310 kW motor, which is far more powerful than the electric motors in most other all electric vehicles. These very high levels of power occasionally result in behaviors that might seem unusual, but are actually normal.
In this case, under hard acceleration the main contactors inside the HV battery might vibrate as large amounts of current flow from the battery to the motor. These vibrations might result in a squealing sound. Depending on ambient temperature and the age of the battery, these vibrations might happen at different power levels over time.
Both the vibrations and the squealing sound have been validated by Tesla Motors to be normal characteristics of operation, and do not indicate any kind of fault, problem, or defect in the safe and reliable operation of the Model S powertrain. The system is operating as expected, and no repairs are necessary.
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