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Drive unit replacement - getting better?

My drive unit was replaced and my car was produced:

  • 2012

    Votes: 27 16.0%
  • 1Q 2013

    Votes: 27 16.0%
  • 2Q 2013

    Votes: 17 10.1%
  • 3Q 2013

    Votes: 25 14.8%
  • 4Q 2013

    Votes: 12 7.1%
  • 1Q 2014

    Votes: 14 8.3%
  • 2Q 2014

    Votes: 6 3.6%
  • 3Q 2014

    Votes: 12 7.1%
  • 4Q 2014

    Votes: 17 10.1%
  • 1Q 2015

    Votes: 3 1.8%
  • 2Q 2015

    Votes: 4 2.4%
  • 3Q 2015

    Votes: 1 0.6%
  • 4Q 2015

    Votes: 4 2.4%

  • Total voters
    169

mspohr

Well-Known Member
Jul 27, 2014
10,059
12,639
California
Recently Elon stated they were working towards a million mile drive train. This is a worthy goal and I personally would like to see them succeed (although I probably won't live long enough to drive my car a million miles).
We know that Tesla had some problems with drive trains (inadequate lubrication, slack parts) and it seems that it is very easy to replace the drive unit so rather than trying to diagnose and repair the drive train in the field, they just replace it and send it for factory reconditioning.
Hopefully their efforts are bearing fruit and newer cars have fewer drive unit problems.
This poll is intended to try to see if we can find a trend in drive unit problems.
I'd like people who have had one (or more) drive unit replacements to enter the production date of their car (by quarter). The gory details of failure mode, number of replacements, mileage, odd sounds, etc. can go in individual comments to the thread.
Of course, like all polls here, we don't have denominators and newer cars will have fewer miles, etc. but we might find out something interesting.
 

rxlawdude

Active Member
Jul 10, 2015
3,095
2,573
Orange County, CA
Recently Elon stated they were working towards a million mile drive train. This is a worthy goal and I personally would like to see them succeed (although I probably won't live long enough to drive my car a million miles).
We know that Tesla had some problems with drive trains (inadequate lubrication, slack parts) and it seems that it is very easy to replace the drive unit so rather than trying to diagnose and repair the drive train in the field, they just replace it and send it for factory reconditioning.
Hopefully their efforts are bearing fruit and newer cars have fewer drive unit problems.
This poll is intended to try to see if we can find a trend in drive unit problems.
I'd like people who have had one (or more) drive unit replacements to enter the production date of their car (by quarter). The gory details of failure mode, number of replacements, mileage, odd sounds, etc. can go in individual comments to the thread.
Of course, like all polls here, we don't have denominators and newer cars will have fewer miles, etc. but we might find out something interesting.
I believe I've seen at least two reports of post-April 2015 builds needing drive unit replacements. But I sure hope those were aberations.
 

TTT

Member
Jul 10, 2014
359
14
San Diego
No accomodation in your poll for multiple replacements, my drive unit was replaced a second time within a week of the first replacement. SvC were very nice during the entire ordeal.
 

ChadS

Last tank of gas: March 2009
Jul 16, 2009
3,364
2,772
Redmond, WA
No replacement yet. Q3 2012, 51k miles.

(Dang it; the first time I read this I correctly did not answer the poll because my DU has not been replaced. But I clicked on the thread again today, saw 2012 at the top and voted when I shouldn't have. I don't think there is a way for me to remove my incorrect vote. Sorry)
 
Last edited:

mspohr

Well-Known Member
Jul 27, 2014
10,059
12,639
California
No accomodation in your poll for multiple replacements, my drive unit was replaced a second time within a week of the first replacement. SvC were very nice during the entire ordeal.
I'm really only interested in the production date of your car so we could potentially see if cars are getting better (or worse) over time.
What was your production date?
The details of number of replacements, mileage, etc. can go in the comments.
If your replacement was replaced within a week, then the replacement unit was faulty, not the original unit.
 

trils0n

2013 P85
Feb 12, 2013
1,527
1,979
SF Bay Area
Car produced in Q1 2013.

2 replacements so far.
1st (ASY,P-TRAIN,SPORT,MECH,COMPLETE (1002633-01-D)) at ~16k miles.
2nd (DRIVE UNIT - SPORT WITH SHIMS - REMAN - (1025598-00-H)) at ~26k miles.

Current drive unit just started (~36k miles) with the buzzing/milling again. So a few thousands miles and it will be another replacement.
 

LMB

Member
Mar 9, 2013
192
3
South Shore Boston
(LMB spouse)

2013Q2 S85. Drive unit replaced twice.

First time was at 6000 miles because of the loud rumble/tire-noise-like-sound. The replacement was a rebuilt unit. It was great but after a few thousand miles developed a loud inverter whine at low power levels, 5-20 kW, i.e. typical steady driving power. Note that this is NOT the so-called balloon squeal noise heard during hard acceleration.

Second replacement was at 36,000 miles, just a week ago, after listening to the whine for a year and a half. No problems so far.
 

mspohr

Well-Known Member
Jul 27, 2014
10,059
12,639
California
The spike in Q3 of 2013 is interesting. That's when I bought my car. I needed a new DU within the first 500 miles, and have had a total of three replacements.
Judging by the number of people who have had multiple replacements, I'm beginning to think that there must be some problem with the "factory refurb" process.
 

AmpedRealtor

Well-Known Member
Jun 30, 2013
6,414
4,097
Phoenix, AZ
Judging by the number of people who have had multiple replacements, I'm beginning to think that there must be some problem with the "factory refurb" process.

I agree. They probably didn't get the memo. When outbound communications are so bad, how can internal communications be any better?
 

pgiralt

Supporting Member
Supporting Member
Jun 16, 2013
1,520
155
Cary, NC
I'm a Q3 2013'er as well and am on my 6th (5 replacements - Hum, Milling, Hum, Milling, Hum) through 53k miles. Last one (-M revision) in May has been going strong for 6,000 miles so have my fingers crossed this will be the one.
 

hpham007

Banned
Jul 17, 2015
166
1
Houston
I'm a Q3 2013'er as well and am on my 6th (5 replacements - Hum, Milling, Hum, Milling, Hum) through 53k miles. Last one (-M revision) in May has been going strong for 6,000 miles so have my fingers crossed this will be the one.

whoa. i think you take the prize for most DU replacements. 6 in 53K is more often than oil changes in a ICE car. In fact, I don't think there's any maintenance item in any car than is replaced as often.
 

AmpedRealtor

Well-Known Member
Jun 30, 2013
6,414
4,097
Phoenix, AZ
I'm a Q3 2013'er as well and am on my 6th (5 replacements - Hum, Milling, Hum, Milling, Hum) through 53k miles. Last one (-M revision) in May has been going strong for 6,000 miles so have my fingers crossed this will be the one.

My last DU swap in February was also an M revision, and so far (knock wood) it has been rock solid after 12,000 miles. This is one is lasting the longest so far! :)
 

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