hutch
Posts: 1
Joined: Fri Mar 08, 2019 4:45 pm
Delivery Date: 08 Mar 2019

?catastrophic transmission failure?

Fri Mar 08, 2019 4:57 pm

The problem has been coming on over the past few weeks--when I pressed the accelerator, there was a delay 'till the car "chunked" into drive, and when I put it in park it would creep a foot or so before halting abruptly. Now my 2012 Leaf won't move, and I can hear the motor spinning. I can't find any reference to this problem online, and of course the local dealer hasn't seen it before, since they've hardly seen a Leaf before. I live in the mountains, and need to figure out if this is worth the $500 tow bill just to find out if the car will need it's whole value in repair.

LeftieBiker
Moderator
Posts: 13419
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: ?catastrophic transmission failure?

Fri Mar 08, 2019 6:41 pm

Yikes. There is no "transmission" in the usual sense, just a reduction gear and presumably some kind of differential, or something that functions as one. I can't think of a failure that would let the car move, but only a little. I'm guessing it's the drive motor that has issues...
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

jjeff
Posts: 1971
Joined: Wed Jan 13, 2016 9:10 am
Delivery Date: 13 Jul 2014
Leaf Number: 422121
Location: MSP MN

Re: ?catastrophic transmission failure?

Sat Mar 09, 2019 6:19 am

Just a WAG but could it be something stuck in the electric parking brake? I guess to test you could put it in neutral on a flat area and see if you could push the car, I suppose you could also jack it up and see if all wheels easily spin?? Like Leftie I haven't read of anyone having a similar problem so I'm just grasping at straws.
Oh, any error lights on the dash?
2012 SL purchased used 2/'16
2013 S w/QC purchased new
Juicebox Premium 60a L1/L2 EVSE, Ebusbar 16a L1/L2 EVSE
'12 EVSEupgrade'd 20a L1/L2 EVSE, '13 EVSEupgrade'd adjustable 6-20a L2, 6-13a L1 EVSE
Zencar 13, 20, 30a L1/L2 portable EVSE
GE Durastation 30a

BlazinGuns
Posts: 2
Joined: Fri Jul 19, 2019 5:25 pm
Delivery Date: 20 Jul 2019

Re: ?catastrophic transmission failure?

Fri Jul 19, 2019 5:28 pm

Any update on this?

estomax
Posts: 227
Joined: Fri Jan 20, 2017 9:23 pm
Delivery Date: 21 Jan 2017
Leaf Number: 424033
Location: Seattle

Re: ?catastrophic transmission failure?

Tue Jul 23, 2019 6:47 am

a cheap test would be to drain the transmission fluid out and see if chunks/metal comes out of there. That would confirm something screwed in the transmission. If the fluid comes out looking alright then just put fresh fluid in and you can say that wasn't the problem. There is a how-to here if you search my username.

Marko
2013 Leaf SL Premium
27k, 93% SoH 2/17 32k, 96% SoH 6/17
46k, 94% SoH 2/18 52k, 88% SoH 6/18
62k, 87% SoH 2/19 68k, 84% SoH 6/19

Lothsahn
Posts: 525
Joined: Thu Apr 05, 2018 4:35 pm
Delivery Date: 04 Jan 2018
Leaf Number: 007797

Re: ?catastrophic transmission failure?

Tue Jul 23, 2019 7:49 am

estomax wrote:a cheap test would be to drain the transmission fluid out and see if chunks/metal comes out of there. That would confirm something screwed in the transmission. If the fluid comes out looking alright then just put fresh fluid in and you can say that wasn't the problem. There is a how-to here if you search my username.

Marko
If you want to do this, the Leaf doesn't actually have a transmission, it has a gearbox (fixed gear--no shifting). So the process you want done is to change the gearbox reduction oil, and check to see if there are metal bits in the oil.

Keep in mind that some small metal shavings are expected in the gearbox reduction oil (there's a collection magnet), but certainly not chunks or parts. If you can read a part number, you've got a problem. ;)
2011 Silver SV, purchased 2018, lives in Missouri (previously in CA)
LeafSpy Pro + BAFX Products OBDII dongle
Battery swap 2019/04/24 (87% SOH, 12 bar)

User avatar
Nubo
Posts: 5439
Joined: Fri May 28, 2010 11:01 am
Delivery Date: 31 Oct 2014
Location: Vallejo, CA

Re: ?catastrophic transmission failure?

Tue Jul 23, 2019 3:01 pm

LeftieBiker wrote:Yikes. There is no "transmission" in the usual sense, just a reduction gear and presumably some kind of differential, or something that functions as one. I can't think of a failure that would let the car move, but only a little. I'm guessing it's the drive motor that has issues...
A couple of broken teeth on the driven gear?
I noticed you're still working with polymers.

LeftieBiker
Moderator
Posts: 13419
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: ?catastrophic transmission failure?

Tue Jul 23, 2019 8:00 pm

Nubo wrote:
LeftieBiker wrote:Yikes. There is no "transmission" in the usual sense, just a reduction gear and presumably some kind of differential, or something that functions as one. I can't think of a failure that would let the car move, but only a little. I'm guessing it's the drive motor that has issues...
A couple of broken teeth on the driven gear?
Maybe, I guess...
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

GerryAZ
Gold Member
Posts: 2289
Joined: Mon Nov 22, 2010 6:47 pm
Delivery Date: 12 Jun 2011
Location: Phoenix, AZ

Re: ?catastrophic transmission failure?

Wed Jul 24, 2019 9:06 pm

You might be able to get the car to move under power by pushing it a couple of feet. That would move the driven gear so that good teeth would be in contact with the drive gear (if failure is due to broken teeth). As others have mentioned, reduction gear oil change would give some information. Drain and fill plugs have magnets which normally collect fine metal shavings that almost look like metal paste. Large pieces of metal on the magnets or in the drained oil would confirm failure.
Gerry
Silver LEAF 2011 SL rear ended (totaled) by in-attentive driver 1/4/2015 at 50,422 miles
Silver LEAF 2015 SL purchased 2/7/2015; traded 8/10/2019 at 82,436 miles
White LEAF 2019 SL+ purchased 8/10/2019

gregn
Posts: 99
Joined: Wed Apr 06, 2016 8:29 pm
Delivery Date: 03 Dec 2019
Leaf Number: 302662
Location: Montpelier, VT

Re: ?catastrophic transmission failure?

Fri Jul 26, 2019 6:08 am

Hi all,
Dose the dash indicate the position of the gear selector? P D R or N for neutral?
If not I would suspect the gear selector switch.
Greg
2019 Black SV w/All Weather and Tech Packages
Lease ended Odo 35700 Hx 85%
2016 Leaf SV Pearl Blue
67 mile daily commute

Return to “Problems / Troubleshooting”