Robot24
Posts: 11
Joined: Wed Nov 15, 2017 10:21 pm

Bimmercode App REX ‘hold mode’ enablement step by step

Thu Jan 04, 2018 5:56 pm

In the middle of playing with the bimmercode app on my 2017 Rex and I am observing the bunch of error messages I read on a variety of postings, but I can’t really find an easy step by step guide, anyone has any suggestions?

Thanks!!!!

louisgrenier
Posts: 30
Joined: Sat Oct 25, 2014 4:24 am

Re: Bimmercode App REX ‘hold mode’ enablement step by step

Fri Jan 05, 2018 5:27 am

If you are in a hurry, DVDinmotion solution. So simple i was able to do it myself. Even if i still fumble with the Bimmercode solution. Been using it since three years and i never had any issue with it.

You receive a file by email, copy it to a USB stick, put the USB stick in the USB of the i3, and it's done.

http://dvdinmotion.com/bmw-i3-special

maddyn99
Posts: 4
Joined: Thu Jan 04, 2018 11:54 am

Re: Bimmercode App REX ‘hold mode’ enablement step by step

Fri Jan 05, 2018 9:49 am

I just did mine yesterday. I used the guide from the FB I3 group which can be found here.

https://docs.google.com/document/d/1WCF ... QSSGk/edit

I did get a few errors when the console reset but they cleared on a vehicle restart.

On a side note I was initially confused on why I couldn't enable hold mode after coding it. It was greyed out and would not let me enable it. A few preconditions are needed. You have to be exited from the Bimmercode App, Vechile cant be plugged in, Vechile must be "Started" and battery level must be BELOW 75%.

I really dug into the options after doing the simple stuff. I turned down the heat seat setting by 5 degrees as the standard heat setting on even the lowest was too hot for me. Great app if you dont mind doing a bit of research and the price is 1/3 of the DVDinmotion even with the OBD adapter.

Robot24
Posts: 11
Joined: Wed Nov 15, 2017 10:21 pm

Re: Bimmercode App REX ‘hold mode’ enablement step by step

Sun Jan 07, 2018 7:18 pm

Thanks for the link, just completed coding of all features i want to have. I’ll start playing with the hold mode now :D

Robot24
Posts: 11
Joined: Wed Nov 15, 2017 10:21 pm

Re: Bimmercode App REX ‘hold mode’ enablement step by step

Mon Jan 08, 2018 11:07 pm

Hold mode works great, except I’m stop and go traffic since the engine keeps stopping at every traffic light and I also noticed that it doesn’t “hold”charge, it surely continues to drain the battery, just less. I hope at highway speed at continued motor operation it indeed does hold charge. Will give that a shot..

maddyn99
Posts: 4
Joined: Thu Jan 04, 2018 11:54 am

Re: Bimmercode App REX ‘hold mode’ enablement step by step

Tue Jan 09, 2018 7:15 am

Robot24 wrote:Hold mode works great, except I’m stop and go traffic since the engine keeps stopping at every traffic light and I also noticed that it doesn’t “hold”charge, it surely continues to drain the battery, just less. I hope at highway speed at continued motor operation it indeed does hold charge. Will give that a shot..
It is definitely NOT capable of keeping up with power usage when the car is using anywhere near a full load. That being said I have found it keeps it within 2-3% if I keep the speed below 75MPH and no heating. It also seems to catch back up with more stop and go traffic and lower speeds.

jadnashuanh
Posts: 4986
Joined: Thu May 22, 2014 2:07 pm
Location: Nashua, NH USA

Re: Bimmercode App REX ‘hold mode’ enablement step by step

Tue Jan 09, 2018 2:41 pm

Think of it this way...the car has a 170hp motor, then, it's also running the lights, computers, hvac and the REx is what, 34hp, and the conversion to electricity is not 100%. Certainly, you are not using the full 170hp of the motor very often, if ever, but the load goes up as a factor of V^2. There will be times when the REx cannot keep up with the load, and that's what the batteries help to buffer...the bigger the buffer, the longer you can do it...but, depending on the conditions, you may deplete them, regardless of when you turn the REx on. Crank the heat or a/c up higher, go faster, hit a long uphill grade, run high-beams, seat heaters, rear window defrost, etc., the load just keeps adding up...and it isn't all that much before you're in the negative area and discharging verses charging (but at a slower rate than you would without it!). Then, the computer won't let the REx run at full throttle all of the time, and even shuts it off when the conditions are set...the batteries can and will run down. If your trip does not need those higher loads, yes, you can maintain. Given the nominal 34-40mpg efficiency of maintaining, verses the 100+mpge, if running with it constantly on a longer trip, you may get better mileage with an ICE or other hybrid. The REx is not the most efficient option out there. Now, I'm not a fan of say a Prius, but if you're running primarily on the REx in hold mode on a longer trip and unable to recharge along the way, the Prius would beat it by a fairly significant percentage.
Jim DeBruycker
2011 535i x-drive GT, 2014 i3 BEV
Soon (hopefully!) A 2021 X5 45e will replace the above

nichris143
Posts: 4
Joined: Thu Nov 21, 2019 8:23 am

Re: Bimmercode App REX ‘hold mode’ enablement step by step

Thu Nov 21, 2019 9:29 am

Resurrection of an ancient thread but has anyone noticed the inability to turn off HSOC after using about 15 minutes? After codingHSOC with a veepak in basic mode, I programmed the favorites 8 key for HSOC. I activate HSOC when I hit the freeway for about 10 miles. I can turn it on and off initially without any issues. I exit the freeway and try to turn off HSOC but it remains on whether I press the favorites 8 or through the iDrive menu. I know sometimes there's a delay but I've waited about 5 minutes before pulling over and turning off the car.

Should I re-code with expert mode?

jfran2
Posts: 58
Joined: Tue Oct 30, 2018 4:20 am

Re: Bimmercode App REX ‘hold mode’ enablement step by step

Thu Nov 21, 2019 10:14 pm

No, everything is perfectly normal. Once you hit the button to stop the Rex, it shuts off according to it's own schedule, probably heat related. Personally, when I'm running mine on the interstate, I usually push the button to shut it off when I see my exit sign. I'll immediately hear the engine slow down, and the few minutes left on my trip are usually enough for the engine to shut down.

joni3s
Posts: 56
Joined: Wed Oct 02, 2019 11:16 am
Location: VA

Re: Bimmercode App REX ‘hold mode’ enablement step by step

Fri Nov 22, 2019 1:16 pm

nichris143 wrote:
Thu Nov 21, 2019 9:29 am
Resurrection of an ancient thread but has anyone noticed the inability to turn off HSOC after using about 15 minutes? After codingHSOC with a veepak in basic mode, I programmed the favorites 8 key for HSOC. I activate HSOC when I hit the freeway for about 10 miles. I can turn it on and off initially without any issues. I exit the freeway and try to turn off HSOC but it remains on whether I press the favorites 8 or through the iDrive menu. I know sometimes there's a delay but I've waited about 5 minutes before pulling over and turning off the car.

Should I re-code with expert mode?
Are you seeing the box w/ check mark not being able to be unchecked?
2018 I3s rex

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