goldbrick
Posts: 966
Joined: Tue Aug 01, 2017 3:33 pm
Delivery Date: 01 Aug 2017
Leaf Number: 311806
Location: Boulder, CO

Re: sour odor when new Leaf starts

Fri Oct 16, 2020 3:42 pm

I also run the fan with the AC off just before shutting down the car. I treat it as 30 seconds of free AC since the evaporator stays cold for some time after the AC is off.

LeftieBiker
Moderator
Posts: 15518
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: sour odor when new Leaf starts

Fri Oct 16, 2020 4:28 pm

Also check to make sure the condensate drain is not blocked. I.e., there should be a trickle of water under the car when parked for a few minutes with the AC on.
Definitely. I should have added that. I'd say that between a third and half of the time, this is the problem. Also, if you have a sunroof (not a Leaf option) check the drain line from that.
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.

DaveinOlyWA
Posts: 15067
Joined: Sat Apr 24, 2010 7:43 pm
Delivery Date: 16 Nov 2019
Leaf Number: 319862
Location: Olympia, WA
Contact: Website

Re: sour odor when new Leaf starts

Sat Oct 17, 2020 11:54 am

LeftieBiker wrote:
Sat Oct 10, 2020 10:15 pm
Condensation can form in the A/C and grow mold - especially if you use Recirculate all of the time.
Bingo. The fix; turn off A/C and flip the fan to high for the last 30 seconds or so on fresh air. For me, its more like 2 minutes but in Phoenix? Guessing 30 seconds would be plenty of time. You should also change your cabin filter twice a year. I would save the old one, wash it, dry it and reuse it. They are fairly durable.
2011 SL; 44,598 mi, 87% SOH. 2013 S; 44,840 mi, 91% SOH. 2016 S30; 29,413 mi, 99% SOH. 2018 S; 25,185 mi, SOH 92.23%. 2019 S Plus; 13,705 mi, 93.41% SOH
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sriram
Posts: 5
Joined: Sat Oct 10, 2020 9:25 am
Delivery Date: 03 Jul 2020
Leaf Number: 321850

Re: sour odor when new Leaf starts

Sun Oct 18, 2020 10:21 am

Thanks for all the advice and suggestions! But I am still puzzled why this happened in 3 months in my brand new Leaf and does not happen in my Toyota Prius and Avalon, both in Phoenix over the last 18 months and several years in Phoenix. I thought recirc is the default in these also.

LeftieBiker
Moderator
Posts: 15518
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: sour odor when new Leaf starts

Sun Oct 18, 2020 10:46 am

I haven't had a problem with it with my two Leafs, and it isn't a commonly reported one here. Either it is something to do with your car in particular (like a blocked condensate drain hose) or it's something to do with how you in particular use the car. BTW, we had a 2010 Prius that we leased for 3 years. Insects or spiders managed to block that hose, the rugs got wet, and we had to replace all of the carpeting because mold was growing in it. The dealership wanted thousands of dollars for that - and claimed that it was a rare issue - so we had exact fit aftermarket carpet installed, for about a Grand.
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.

goldbrick
Posts: 966
Joined: Tue Aug 01, 2017 3:33 pm
Delivery Date: 01 Aug 2017
Leaf Number: 311806
Location: Boulder, CO

Re: sour odor when new Leaf starts

Sun Oct 18, 2020 11:18 am

One difference is that there is no engine heat on a Leaf. Even the Prius I would assume generates quite a bit of heat from the engine when it runs. Maybe that was enough to dry out the AC system or maybe it's just how the Leaf's AC is constructed. Or maybe something was odd with your car, this is the first time I've heard of anyone having this issue on any model Leaf.

DaveinOlyWA
Posts: 15067
Joined: Sat Apr 24, 2010 7:43 pm
Delivery Date: 16 Nov 2019
Leaf Number: 319862
Location: Olympia, WA
Contact: Website

Re: sour odor when new Leaf starts

Tue Oct 20, 2020 6:53 am

sriram wrote:
Sun Oct 18, 2020 10:21 am
Thanks for all the advice and suggestions! But I am still puzzled why this happened in 3 months in my brand new Leaf and does not happen in my Toyota Prius and Avalon, both in Phoenix over the last 18 months and several years in Phoenix. I thought recirc is the default in these also.
Part of the reason is the seal. My LEAF with vents closed leak no air...at all. My other cars (including the Prius which had the same issues) did leak some air and I had others that felt like the fan was on low speed at freeway speeds.

I think in your case, the likelihood of your driving around with all the windows closed aggravates the situation due to back pressure preventing small air leaks. My Corolla leaked like a sieve but then again it was "older" and despite the definitive clunk of the vents closing, it still had significant air flow. The Prius also had that clunk which makes me think it was an electrically operated switch of sorts that released a spring loaded mechanism but the LEAF is all electric. The delay you experience when changing modes is more than enough to figure that out.

I can only think the "gentler" closing of the vent preserves the integrity a bit better?
2011 SL; 44,598 mi, 87% SOH. 2013 S; 44,840 mi, 91% SOH. 2016 S30; 29,413 mi, 99% SOH. 2018 S; 25,185 mi, SOH 92.23%. 2019 S Plus; 13,705 mi, 93.41% SOH
My Blog; http://daveinolywa.blogspot.com" onclick="window.open(this.href);return false;

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