Why I use Hold State of Charge in my BMW i8
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- čas přidán 27. 12. 2019
- UPDATE: NewTIS has been closed. Service Manual data is no longer free. DIY maintain your BMW at your own risk. • BMW shut down NewTIS. ...
This video will help you enable Hold State of Charge on your BMW i8 in order to reduce battery consumption, or reduce wear on a cold starting engine. Hold state of charge does not turn on by default. You must re-enable it each time you start the BMW i8.
Comfort Mode defaults to using battery unless the battery is empty, you're going over 62MPH or 100km/h, or you request more than 45% power using the accelerator pedal. Hold State of Charge can be assigned to a pre-set on the dash for ease of use. I use Hold State of Charge in Comfort Mode in my BMW i8 for several reasons.
-I want to reduce or eliminate battery drain so more battery is available in stop and go traffic, parking lots, or areas where I would have increased gas mileage by using batteries instead of gas.
-I want to warm my engine up during cold weather conditions instead of having the engine kick in when I demand more power, or use Sport Mode which creates more load on the engine and causes the engine to run at a higher RPM. Combined with Eco Pro Mode, Hold State of Charge will cause the engine to fire up and the transmission to shift early.
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Hi Pat, Thanks for the HSC Tutorial :) I saw that in the manual and was thinking it is primarily to save electric for a destination city center or such. I never thought of it as a way to ease the engine up to temp. I think about that zero to full power thing as well so I use the Sport mode while at a couple lights before the interstate. The engine isn't doing much more than idling and then once finally at speed I go back to comfort. I think this is also why the oil has such a low Winter viscosity rating. I think it is something BMW has struggled with a bit originally with folks not using the engine at all costs for weeks/month and then hammering the poor thing to get on the interstate with very exciting results. I believe that is why BMW implemented that start-up-once-week whether you need it or not bit. I've been meaning to go into the manual to see how to set a feature to the pre-set buttons. Thanks for saving me the trip! That's great :) Franny
Thank you Franny, for sharing your thoughts and experiences. I also used the Sport Mode to help warm up the engine at lights just before the interstate and then switch to Comfort after I got on the Baltimore Beltway. You are right, idling is not going to put a load on the engine so that should be very acceptable for warm-ups while being conscious of engine longevity.
I recently read an article explaining that idling with a cold engine running rich may result in the extra fuel mixture getting deposited onto the cylinder walls, neutralizing the lubricating effects of the engine oil and potentially leading to cylinder wear. I'm honestly not sure I believe it, as I have had experience with cold weather carburetor starts, as you have. You have to let it warm up and kick down, or you will have a heck of a time driving. But, that data resonated strongly enough with me to actually stop using Sport for warm ups and instead using Eco Pro to warm up on the go. I'm sure that has it's own negatives as well, so babying this engine to help with longevity is likely to be an impossible feat. LOL. Either way, anything is better than a cold start on demand when acceleration is needed. I'm curious what you think.
And, I believe you're spot-on with the low viscosity and the routine self-starts on the mid-engine. I'm glad they considered a lot of these things when designing the car. Otherwise, we'd be stuck with throwing it out and buying a replacement every 4 years. Glad to help with the pre-set info!
Subscribed! The 'hold state of charge' is a cool feature Pat, thanks for sharing!
As a new owner find ur vids most helpful 👌, love the clear no bullshit approach
Just bout a 2017 tera edition and I appreciate you!!! And all the insights and tools thank you
Great tip that Pat, thanks. A great way to warm up the engine like you say and now I can easily reserve electric power for when I drive to a place where I want to remain quiet.
Great stuff getting loads of info, hoping to get the roadster soon and trying to find my way. 👍🏼🤗
Definitely learned something new, thanks for the explanation Pat 👌
Nice :) thanks for the info
I8 family
Another great video Pat! Keep up the great work!
Thank you!
Pat, like all of your videos I've watched on the i8, this one contains great information that I otherwise would not have thought of. At least I think I wouldn't have. I just bought a 2019 i8 Roadster last month and I'm really enjoying it, but there is so much to learn about this futuristic wonder car. Your content is a very welcome source for my education. You do a clear and concise job on all of these videos, so I wanted to let you know how much it's appreciated. Thanks for taking time to share your knowledge and experience with the car.
Thank you!
Hi rodgerlee7302. How are you doing with your 2019 i8? I’m considering buying the same model year with a CPO so that I can get an extended warranty. Any issues or regrets so far? How did you find your vehicle? Thanks! John
@@Bmeri3 , Hello John, I'm doing great with my 2019 i8 Roadster. I have nothing but positive to report of my first year owning and driving this car. I haven't had any mechanical issues or any problems while I clocked about 6000 miles in my first year of ownership. So, no regrets here. in fact I have become more enamored with this one of a kind super vehicle than when I first brought it home. As far finding my i8, my best friend owns a used car dealership in Salt Lake City. He ran across two 2019 i8 Roadsters in the wholesale market and bought both. I fell in love with them and told him if he decided to sell one, let me have first dibs. He called me a few months later and said he was going to let one go and it only took me a few minutes to commit. Six months later, my friend acquired a third Roadster, so I have one of them now and he keeps one at his full time residence and one at his winter residence. I should add that my car dealer friend has a number of other true exotics/supercars including a Ferrari 458, Audi r8, Porsches, AMG's, etc. He still insists his all around favorite to drive is the i8.
Thanks a lot! This is the first time I know the number button's function! And I am surprised to see your i8's battery can do 20 miles while my i8's battery can only do 9 miles now..
This is very helpful! I love all of your videos... Super informative!
Fantastic. Thanks!
Hi Pat, great video as always, however just a quick tip that I was taught from a bmw tech.. If you hold down the gas (kick down) and the brake and then start the car the engine will run and will not turn off. This allows the engine to warm up when idling.
Thanks! With the i8, once you turn the car on in Comfort Mode, just touch the gas pedal and it will do the same. I just never do this because I park in a garage and as soon as I put it in gear, it defaults to electric drive again.
Yes exactly, but when using the kickdown start it won’t default back to electric only (turning the engine off) as far as I remember. Now I am thinking... I will check this morning when I go out.
@@richardgold1011 what does kick down mean?
Thank you pat
My dream car. Love the vid 😎
Pat great channel; I save the bottom 25-35% SOC to do my last 4-5miles of my trip home in electric mode.....This let's the car cool a down a bit with ICE off before it goes into the garage..... Also when you start the car step on the gas before you put the car in drive. The ICE will run for about ~2min no more cold turbo starts..
Thanks! Great advice for a cool down in electric and a warm up by touching the gas while in park.
There was some really good information , can you make video on How We Can avoid the engine going on and off when you're in traffic and when on low charge thank you
Thank you. I wish there was a way to do this without having to sit in Sport Mode. Unfortunately, the only way to keep the mid-engine running all the time is to put it in Sport Mode. Any other mode will cause the engine to stop in order to reduce excess fuel usage. I try to run in Sport Mode, which also recharges batteries, so I have a few miles of electric range available to me when I'm in stop and go traffic. That way, the engine isn't constantly starting and stopping.
THANKS-A-LOT
Pat, is this a well-known and documented feature that most i8 owners utilize? Being very green on this automobile, I’m not sure if this is considered a ‘hidden’ feature or a routine operation procedure. Either way, the technology incorporated into the i8 is mind blowing. Makes my big V8s and manual transmissions seem archaic. Appreciate you sharing this unique vehicle with us! 👍
Thank you, as always, for tuning in and commenting. It's great to have you! when the C8 Corvette goes hybrid, I am very curious if they're going to set the car up in any similar way to the i8. The "hold state of charge" feature doesn't seem to be a very common thing that i8 owners know about. In fact, I learned about this on the i8 forum that I participate in. Still, many people don't remember how to use it and they don't even set up a hotkey. New i8 owners have reached out to me to ask if that I had any advice for driving the car and this was one of the first, so I decided to make a video on it. I wish the computer was more intelligent and decided to use this feature in order to improve engine longevity, first. One feature documented in the tech training manual says that if you use the GPS and set a destination, the car will see where you might be driving slowly and make sure that it charges the battery prior to entering those locations so you have battery available. But most people only do that on a long trip. I use Waze on my phone so I don't even do that. The tech is quite interesting, indeed! It's almost like flying an airplane, if you truly want to manage the car's system's. But, you don't have to if you just want to put it in gear and drive.
Had no idea we could preset options like this. Thanks!!!
Smart man i like
Great info Pat. If I don’t plan to drive my i8 for 2-3 weeks, should I run the battery tender to keep it charge or you think is not necessary?
Should use the plug-in charger, not a battery tender, with the i8. It should be topped off every 6 weeks, maximum for best battery life.
Just got an i3 and driving from okla to Cali been trying to decide between hold state of charge or battery only.
Hold State is good when you need to use the range extender because you're not going to have enough battery to make it to the next stop. I think you only have 1.8 gallon in that tank, tho. Some owners put a gas can in the frunk and keep filling it up as needed.
Pat, I'm a new member, I greatly appreciate your videos and explanations for these cars. I love my I8 for many reasons, but as an "old guy" (I still have my '71 2002Tii), I don't understand a lot about the drive system. I do all my own maintenance in the past, but plan to buy the extended warranty as you suggested. Couple questions? Should I leave the car plugged in whenever it's parked? What about when I go on vacation for several weeks? Safe? Even though fully charged? I know it will automatically turn on the A/C when the battery gets hot, so in my mind, the car is "active". Sorry, the O/M is unclear about this. Also, I'm concerned about the A/C compressor failure you discussed in the "warranty" video. Does the I8 not have an inline filter in the system to trap any particles that get into the freon system? If not, then I would say the compressor should be replaced as a wear item whether it works or not. A lot cheaper than what you and others describe. All my past cars have had an inline filter in the system that protects contamination of the system in the event of compressor failure. Sure, the system requires a flush after compressor replacement, but that is routine and not as costly as others have reported. I haven't opened the "hood" yet, but was wondering what size pin to have ready to hold the hood open? I firmly believe in Redline oil, plan to put in Redline. It is the best oil if you have turbos, since it will not "coke" up when engine is turned off hot. Will this in any way void the warranty? Thanks again, I'm sure I'll have many more questions, but I feel a little better knowing there is someone knowledgeable I can ask!
Hi Bob and thanks for subscribing. My time is limited and I don't check CZcams comments often. You can leave the car plugged in all the time as the management system will take care of the batteries and it is safe. The i8 service manual does not indicate that there is a filter in the refrigerant lines. I don't recall what size pin you'd need to hold the hood open. I believe a 1/4 inch would likely be sufficient. Regarding engine oil, the i8 has separate water cooling for the turbo in order to prevent the oil from becoming coked. As long as the oil meets or exceeds BMW specifications that you can search on the Internet, I believe you should be OK.
@@PatsGarageOnline Hey Pat, I have been checking my sources (not exactly a reliable source) and have been told the A/C "filter" may be titled as an "expansion valve" which indicates it serves several functions. I just can't believe BMW would design a system that would "self-destruct" in the event of a compressor failure. Another question: All my gas BMW's like to have a slow charger (with auto turn-off) to keep the battery fully charged. And the I8? Is there an easy method to connect a slow charger to the engine battery? It appears difficult to access, so that may preclude this procedure. And maybe not worth the effort? Thanks, as always, appreciate your insight! Bob
Hi and thank you for another excellent video. So, Hold State of Charge causes the ICE to run but without selecting Sport Mode? Could this be useful for maintaining all-wheel-drive in low traction conditions when only light throttle is required?
Thanks for the kind words. Hold State of Charge ensures that no power is being expended to drive the front motor, otherwise you could never hold your state of charge (you'd be discharging and need the generator to turn on in order to recharge). So, with Hold State of Charge enabled, the car is sending 100% torque to the rear wheels, unless those wheels slip to a certain extent, and then the DME (computer module) will make a decision to enable a certain amount of torque from the front wheels. The same is true in eDrive, where you are operating on electric power only on the front motor. Should those front wheels slip to a certain extent, the rear motor will start and power the DME will decide how much power the rear axle will contribute. In contrast, Sport Mode truly balances a certain of percentage power applied to the road by both axles with 60% power coming from the rear and 40% power coming from the front on level roads while driving straight, at all times. In the case of severe understeer, for example, in sport mode, the vehicle will transfer 100% of the power required to the rear wheels until the severe understeer diminishes, and then go back to the normal power settings.
@@PatsGarageOnline Thank you for that very informative reply - appreciated
Hi Pat, I'm a new subscriber. Oh wait, I'm an old subscriber, well, "older" than all your other subscribers and maybe just a tad senile as well. Well hey, a senile subscriber is just as good as a genius subscriber, aren't we? 😉 While trying to understand "Hold State of Charge" along with the regenerative aspects of the I8, I was wondering if any of this is akin to a KERS setup in the Formula 1 cars? FWIW, I think you're now even baffling the BMW engineers in that even they had no idea that there were so many Easter Eggs hiding in their programming. On one hand I can appreciate all the technology in the make up of the I8 and your ability to make full use of it, but on the other hand I have to say WTF was BMW thinking!? It's not simple enough for most of us, with lowly I.Q.'s of only a 130, to avail ourselves of this Modern Day Marvel.🤢 Oh yeah, please buy something simple to add to your garage. LIKE A C8!🤪
Save the Wave.🙋♂️
Peter, you are not as senile as you say. LOL! The great thing about this car is that you don't have to enable this function in order to use it. if you just drove the car and comfort mode, the car would exhaust the battery and then run on the engine until you came to a full stop. For me, that's not good enough. I find that I use this function very often and wish that the car was more intelligent to be able to use it in the manner I speak about. when the C8 Corvette comes out in hybrid, I am wondering how they are going to manage that system. I would love to learn more about it when it comes out and have an opportunity to compare it to the i8. Thank you, as always, for tuning in and sharing your thoughts!
Well, as I read your reply Pat, I must say you're not only a genius, but you're also the consummate gentleman. Anyone who can coordinate his body moves on the dance floor like you do and compute algorithms in his head gets my 2019 Man Of The Year Award! And while I'm on the subject of awards, any woman who can keep up with The Man Of The Year and is an Equestrian as well, gets my Woman Of The Year award. Congrats to Becca! And since my math is never, ever wrong 🤔 and proof of it is that I still know that one and one equal two. The Couple Of The Year Award goes to Pat and the lovely Lady Rebecca! No one has ever won/hit a Trifecta in my year-end rewards. Congrats to you both and it's time for you both to celebrate.🎊🎈🎉🍾
Now back to Channel Business. As to the C8 hybrid. I believe it is several years away, but it will come out and if anyone of my Corvetteer Merry Men will have access to one, it will be Corvetteer Justin. Now, he is no slouch either when it comes to high-end technology. You should both mark your calendars now, in case I'm not given a day-pass to leave the Asylum's grounds, to team up and do a joint upload review of an E-Vette vs an E-Beemer. Thumbnail: "LET'S DISCUSS THE 'HY' IN HY-BRED. IS IT ALL HYPE, HYP, OR HOUDINI MAGIC?"
Now I really must go in that I'm working on a new theory of Einstein's Theory of Relativity. Oh CRAP! NOW I've really got to go, I see Nurse Bertha coming with my meds! Save Me, I mean, Save the Wave!🙋♂️
@@petercarey6883 I'll gladly accept the honor you've bestowed upon me and have passed the kind words onto Rebecca, who has accepted them with gratitude. I hope to have her back to the channel, soon, to help with the task of replacing the door struts which keep the doors propped up when you step away. They are a wear item and the process of replacing them either requires a prop, or a person offering to be a prop. Either way, you should look forward to seeing that video in the coming weeks.
I'd be happy to discuss E-technology and think you should be there to help with the cheerleading. Putting the HY in HYBRID wasn't a thought that I considered until now. Would you be willing to hold a set of pom-poms and spell out HYBRID while yelling into a manual megaphone? This could get interesting...
Thanks again for stopping by. Please give my regards to Bertha!
Hey, hey, hey! Watch that! I lettered in Cheer Leading! I have my favorite cheer copy-writed. It goes like this:
RAH-RAH, REE-REE,
KICK 'EM IN THE KNEE!
RAH-RAH, RASS-RASS,
KICK'EM IN THE OTHER KNEE!
I'll see if I can find my Pat.Pending, (no pun intended) original mega-phone. But I ain't wear'n no skirt and I ain't wave'n no pom-poms!
FWIW, Nurse Bertha loves your channel. And you wouldn't believe how light on her feet she is for a 260lb-er and she loves to Swing Dance. I'm she'll love to come and "cheer" you on as well. She just loves to pick up winners and carry the off the field.😉
@@petercarey6883 this is always entertaining. I must also submit myself for biggest fan of the year. Although we only met this summer, so maybe biggest fan of the Solstice? I don't know. But please find something for Bertha to do. I'd gladly dance with anyone but I can't mix hobbies on video or I'll lose subscribers! 😂
Thanks for the great content Pat. Correct me if I’m wrong, does the HSOC mainly just force the the vehicle to operate on the mid engine instead of the battery power (It’s activated once a discharge is detected from the battery, and remain in that state until it’s turn off by the user). Apart from HSOC,sport mode, above ~60 mph,45% pedal press (i believe i read somewhere) and the battery’s minimum discharge threshold , will the vehicle always operate on battery power mode?
You are correct about hold state of charge. In Sport Mode, the battery will constantly be charged and discharged with the goal of keeping a constant 60% charge. You can start off with a full battery but Sport Mode will always consume the first 40% as you drive.
@@PatsGarageOnline Ok great, thanks again..I’m an EE and this car is so fascinating to me that I’m thinking about swapping my Camaro for one.
-- Hi I am following Your Channel and I very impressed with your job and information.
- I was considering to purchased pre- owned a i8. In 2022 I am currently hesitant because so many reviews about failure of i8 .
- I wonder what’s the warranty on the i8 hybrid battery 🔋.
- I currently own a 2014 F30 xdrive and my first Bmw ever but I experience so many computer issues and I want it to be driving Green too but not giving up the engagement with an engine.
- I use to own a Porsche Cayenne S 2010 never had any problems with computer on the car.
- I was at my Bmw dealer and told the service advisories I was interested it in buying a i8 they kind were honest with me told me we just got an i8 sitting in with a failure Battery hybrids 🔋 and it’s a 12.000$ replacement and the owner Bmw warranty wouldn’t cover 😮 I was what. As much I was interested it in i8 but I also don’t want a i8 constantly failure or not dependable. ( my other options Porsche Panamera S hybrid or another Cayenne S hybrid) . I also like how you show how to modified your i8 getting more out of it but aren’t you Void your warranty?
I still think your channel great five stars ⭐️ ⭐️⭐️⭐️⭐️.
Currently I am in Germany 🇩🇪
Hello and thanks for the message and kind words. The i8 has been a reliable car for most owners. Many, including myself, daily drive the car. However, there are sometimes catastrophic problems that can result. The high voltage battery is warranted by the manufacturer for 8 years or 100,000 miles. If the battery is not warranted, then you'd have to ask more questions of the dealer. In the United States, a modification cannot result in a void warranty, by law. The only time that a manufacturer can deny a warranty is if your modification caused the problem. For example, if you modify the intake for the mid-engine and a bearing fails in the motor, there's no way you can correlate the two issue and they can't deny a warranty claim. Not every country has those protections like the US.
Please see my buyer's guide and 1 year of ownership video where I talk about things that failed and what to look out for. I don't have any more current or updated advice outside of those two videos at the moment but I'm working on developing more content for the future.
Hi Pat, Does your i8 have advanced cruise control? I have an i3 and it has buttons on the steering wheel to increase/ decrease distance from the vehicle in front. I'm looking for an i8 and haven't seen any buttons on their steering wheels. I noticed we have the same button under the hazard light button to disable it. Thanks
Sadly, the BMW I8 did not include any type of advanced cruise control. It doesn't have the modules I know that the i3 does but the i8 does not.
@@PatsGarageOnline oh that is beyond disappointing. Thanks for the info.
So cool, but why is this functionality seemingly not available in my 2019 LCI? 🤔 The option is greyed out snd the checkbox can not be enabled.
I wonder if they changed the programming to block it. I wasn't aware that anyone with an lci car couldn't see this.
@@PatsGarageOnline I just had the software re-installed at a repair shop so I will soon be going back to get my interior color choices and the Rolls Royce gong chime re-programmed. If there was a way to program this, now would be a great time to have it done as well!
Oh wow we got it to work!
Hello sir, I’m planning on getting one anytime soon and I live in Bowie Maryland I wanna learn more from you and i don’t know if you would allow me to bring the car to you for check up and advice.... pls
Hi and thanks for the message. I've had a few requests from folks to help them check their cars, but I'm not in a position to be able to do it at this time. I'm truly not a "business" and don't want to be in a position of liability. That may change in the future, but for right now, I'd like to continue to produce quality content for i8 owners online.
IS THAT PART AND LABOR THANKS,
RICHARD
I don't know. You'd have to talk to a BMW service center for a quote.
Hi, what do you know about the drivetrain malfunction, thanks
You need to take it to a service center to be diagnosed. That's a very generic error that could mean a dozen different things could be wrong. No way to know which one it is. If it's the EME, then that's going to be the most expensive , literally thousands in repairs costs.
Hi pat, my bmwi8 won't charge. I get a message "not enough power to charge" I've bought a new charger still same issue. Tried neighbours house still same problem. Do you have any ideas please.
Nigel.
You'll have to visit a BMW service center for diagnosis. There could be something wrong with the electronics in the car that restrict charging.
ON A 2014 I8 HOW MUCH TO REPLACE THE MAIN BATTERY AND HOW LONG DOES IT LAST THANKS RICHARD
Batteries are warranted for 8 years and 100,000 miles. After that, replacement costs can be upwards of $7,000.
Hi pat, the "batt kapa max" showing on my 2015 is 3.8kwh instead of the full 7.1kwh, do you know what could have caused it? My range now only maxes out at 8-10km. Hope you can help.
I'm sorry to hear you've had that issue. Unfortunately, I've never encountered something like that, nor can I help diagnose it. The battery on the i8 is warranted for 8 years or 100,000 miles. I recommend a dealer test it for capacity and the repairs should be covered.
Hi does anyone know where to get a service manual for the i8 and know where the engine number is for the i8?
www.newtis.info/tisv2/a/en/i12-i8-cou/
Can u let the car sit in sport mode for 10 mins to warm up before driving?
Yes, you can. I personally don't do this because I would have to sit with my foot in the brake because Sport Mode engages in Drive. You could start the car by shutting the doors, turning it on and then pressing the accelerator pedal. This starts the engine without having the car in gear. It's primarily used to verify operation after service, such as replacing the spark plugs.
@@PatsGarageOnline Exactly. Can't understand why they didn't put auto stop on i8. Even mercedes cla250 has that function.
There are a lot of things that the i8 could have but they decided not to do it. This is one thing that would make good sense. The other is a memory seat module on all model years. The car already has motors in the seats. I think the latest years have this module, but not the 2014-2017 models.
Hi my electric heater is not working any idea what's wrong with it
Hello and thanks for the question. The i8 uses two systems to hear the interior. The air conditioning system and the hot coolant from the mid engine.
The electric heater uses the air conditioning system. Just like a heat pump for a house, it reverses the system in order to generate heat.
If you run the engine and you get heat from the coolant passing through the engine, the heat exchanger on that coolant circuit is working.
So, if you don't have heat coming out the vents when driving in electric-only, I would assume the air conditioning system may be having problems. If you take it to the shop for service, please let me know what they said the problem was and how they fixed it. I may feature this in a video to help other i8 owners. Thanks!
I wonder was it AC compressor.
On my i8 it says HSOC function not available
That will happen if you're in eDrive or Sport mode.
@@PatsGarageOnline thanks Pat....Sorted
bmw over engendering that makes you not enjoying driving in my humble opinion