TomMoloughney
Site Admin
Posts: 694
Joined: Mon Aug 06, 2012 3:01 pm
Location: New Jersey
Contact: Website

i3 Preconditioning Facts

Mon Mar 16, 2015 4:50 am

There have been a lot of questions here and elsewhere on how the i3's preconditioning system works. I sent a list of questions that I found on various sites to BMW for answers so I could put them all together in one place as a reference for i3 owners. Take a look and please add comments if you have any other questions or information that I left out.

http://bmwi3.blogspot.com/2015/03/bmw-i ... g-how.html
Tom Moloughney
MINI-E: (6/09 - 1/12)
BMW ActiveE: (1/12 - 5/14)
BMW i3 REx: (5/14- 6/17)
BMW i3s BEV (1/18- )

My i3 Blog:
http://bmwi3.blogspot.com

Hetekool
Posts: 2
Joined: Mon Mar 16, 2015 5:59 am
Location: Netherlands

Re: i3 Preconditioning Facts

Mon Mar 16, 2015 6:02 am

Thanks for the tips!

Is it the same for the BEV and the REX?

psquare
Posts: 495
Joined: Wed Oct 15, 2014 5:57 am
Location: i3 REx, 225xe Hybrid UK
Contact: Website

Re: i3 Preconditioning Facts

Mon Mar 16, 2015 7:06 am

Thanks, Tom.

Great post.

TomMoloughney
Site Admin
Posts: 694
Joined: Mon Aug 06, 2012 3:01 pm
Location: New Jersey
Contact: Website

Re: i3 Preconditioning Facts

Mon Mar 16, 2015 7:45 am

Hetekool wrote:Thanks for the tips!

Is it the same for the BEV and the REX?
Yes
Tom Moloughney
MINI-E: (6/09 - 1/12)
BMW ActiveE: (1/12 - 5/14)
BMW i3 REx: (5/14- 6/17)
BMW i3s BEV (1/18- )

My i3 Blog:
http://bmwi3.blogspot.com

m3lover1
Posts: 19
Joined: Thu Feb 19, 2015 11:57 am

Re: i3 Preconditioning Facts

Mon Mar 16, 2015 8:33 am

Thanks Tom!

MikeS
Posts: 713
Joined: Thu Jan 16, 2014 8:29 am
Location: Brighton UK

Re: i3 Preconditioning Facts

Mon Mar 16, 2015 9:32 am

Thank you for putting all that useful info in one place.
BMW 3 Series 2005 - Aug 2014
BMW Z4 35i 2009 - Mar 2014
BMW X1 Mar 14
BMW i3 Sep 14

TomMoloughney
Site Admin
Posts: 694
Joined: Mon Aug 06, 2012 3:01 pm
Location: New Jersey
Contact: Website

Re: i3 Preconditioning Facts

Mon Mar 16, 2015 10:06 am

MikeS wrote:Thank you for putting all that useful info in one place.
You're welcome Mike. I encourage anyone who has any other tips or questions to post them here or in the comment section of the post.
Tom Moloughney
MINI-E: (6/09 - 1/12)
BMW ActiveE: (1/12 - 5/14)
BMW i3 REx: (5/14- 6/17)
BMW i3s BEV (1/18- )

My i3 Blog:
http://bmwi3.blogspot.com

nowtta60
Posts: 182
Joined: Sun Aug 03, 2014 10:15 am
Location: Staffordshire, UK

Re: i3 Preconditioning Facts

Mon Mar 16, 2015 1:18 pm

Nice post - thought I knew everything but not the 3 hour limit. I've user the iRemote app a few times on the way back from shopping whilst parked at a public chargers thinking well if the battery gets 15 muinutes to warm up... nevermind at least the car was toasty.


I've got a couple of questions that I've been trying to find answers for...

1) I haven't yet got around to experimenting with this yet as I leave before the end of cheap rate electric, but what is the relationship between the timer for low rate electricity and the preconditioner. Eg. you might have programmed off peak between midnight and 7am, but have a departure time set of 8.30am. (I wish). In that case would a) the charge timer allow the battery to be topped up if the off peak charging is set b) the battery run down c ) would preconditioning be stopped at the end of cheap electric? Of the choices... I'd prefer a.

2) What happens if you are a bit slow getting dressed / breakfast / out of the shower and don't make the departure time. From my experience of this (like every day) it seems to keep the heat goign for about 15 minutes and then stops. Not sure of the exact time but I was really late one day and the car had cooled off again! LOL. Just wondering a) what the timeout is and b) if there's a way to say "keep the battery warm I'll be there in 10 minutes" given the 3 hour limit already mentioned. Probably not such an issue given the thermal mass of 230kg of LiIon, and hte cabin can be triggeredf from the iRemote once you finally head off to clean your teeth. ;-)

3) The pre-conditioning sends my EVSE into a clunking clicking cycle about every 30 to 60 seconds. I'm assuming the car is requesting current from the EVSE, reaching 100% again and then telling the EVSE - that's enough. Is it just my EVSE that's clunks or do all of them do it? (Rolec 240v 32a with a socket not tethered).

4) Last one - for the first time today - I went out to the car and the battery was not fully charged - was at 75%. Don't know what had happened. The pre-heat was working - the EVSE was supplying power and clunked as I unlocked the car. It definitely took on some charge, as I left it last night at 50%. Checked all settings like charge rate and timers (Max on both Standard and Fast Chargers, Off peak 11:30pm - 7am, Departure 6.15 Precondition on) and can't see why it would have either not charged or dropped charge. Does this sound like a known issue? I've had one where the car charges to 100% when plugged in despite being told to wait till off peak. Wasn't the end of the world - I went the "Fast" way to work on the M6 motorway (UK) and stopped off at Corley Rapid CCS. One that actually works! 50% on arrival - 80% 19 minutes later and back on my way. As the route is 15 minutes quicker than the shorter back roads not much time lost :-)
i3 REX Ordered 06/08/14. Collected 27/01/15
Capparis White, 429s, Loft, Park Assist, Winter Pack, Professional Media, Drive Assist Plus, DC Prep, LED headlamps.
Essential energy reading for EV owners... http://www.withouthotair.com/

jackt
Posts: 178
Joined: Sun Mar 02, 2014 4:57 am
Location: Leeds, Yorkshire, UK

Re: i3 Preconditioning Facts

Tue Mar 17, 2015 4:03 am

On 2 I noticed the same but as you say battery is bigger area, and even when the cabin had cooled in my case, the battery was still at 10degrees. The timeout is 15mins, and you can check battery temp from the service menu.

On point 3, the cycling of EVSE has been reported but I don't think a proper fix is expected until November.

I have also had a weird not charge with Rolec, in my case it was because the connection wasn't registered properly, I am untethered and hadn't pushed the type2 into the unit far enough, it was in far enough to make contact with signal pins.

In the last firmware update I have 14-11-504, the behaviour changed when plugging in, it seems to request about 20 seconds of power to confirm the connection before sleeping until off-peak.
i3 Rex - 25 July 14 - ( Standard Interior -Arravani Grey, Pro Nav + Enhanced BT, HK Audio, Park Assist, Winter Pack )
Outlander PHEV GX4HS - 1 Sept 14

PhilH
Posts: 136
Joined: Sat May 31, 2014 5:50 am
Location: Suffolk, UK

Re: i3 Preconditioning Facts

Tue Mar 17, 2015 8:17 am

nowtta60 wrote: 1) I haven't yet got around to experimenting with this yet as I leave before the end of cheap rate electric, but what is the relationship between the timer for low rate electricity and the preconditioner. Eg. you might have programmed off peak between midnight and 7am, but have a departure time set of 8.30am. (I wish). In that case would a) the charge timer allow the battery to be topped up if the off peak charging is set b) the battery run down c ) would preconditioning be stopped at the end of cheap electric? Of the choices... I'd prefer a.
What I observe happening is that if you have a late day departure set (for me, today at 17:20) and have the vehicle fully charged overnight with off-peak, then go out in the car for a few miles and plug it in when you return, it realises you have a departure but with no off-peak possible, so charges immediately anyway. It will then pre-condition before departure. It also pre-conditions on "normal" electric if it's not used between fully charging overnight and departing late afternoon.

So I would expect that you would see it charge to 100% on low-rate, but then pre-condition with "normal" electric before you depart.
i3 Capparis White; Winter package; Sunroof; LED lights; Ordered 30 May 2014; Delivered 17 October 2014.

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