Low Coolant Warning - Common B58 Issues
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- čas přidán 29. 06. 2024
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How to bleed your cooling system: • The BEST Way to Bleed ...
This video explains how to diagnose coolant loss when iDrive indicates that you need to refill your coolant.
BMW Special Tools
Full set: 0 494 417 (17 0 100)
Pump: 0 494 418 (17 0 101)
Hose: 0 494 419 (17 0 102)
Reservoir Adapter: 0 494 420 (17 0 103)
Cap Adapter: 0 494 643 (17 0 114)
Reservoir Cap Part Number: 17117639020
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Bro you’re a telepath. The second an issue pops up, you upload a video explaining the problem and how to fix it. Keep up the work brotha!
Haha glad to help
Man, I really appreciate you for making this video🫡
I am having this issue with my B58 7 series. There are so many questions I had in mind which you addressed clearly like which coolant to use & where to find the coolant reservoir and the common issues which causes this coolant leak.
My mistake was when my car would say low coolant I thought it was for the small one not the big one, never checked the big one till few mins ago she was empty. I learned something today from this video thanks alot you saved my 230i
2017 540i, had the low coolant message yesterday morning for the first time. Main tank was bone dry. Filled it up, 2hrs later there was a large puddle under the engine. Took it to the dealer, failed water pump. Only has 40k miles on it too. Thankfully under warranty.
Great video. Great channel for B598 engines.
This was very very helpful. Thank you so much for sharing.
Excellent video. Thanks for the tips and information sharing.
Oh my god, thank you so much for your video. It's been 2 days since I tried to find out why I have 2 coolant tank. Even at my BMW dealership they didn't know.
Change dealership ASAP
Great video! Please make a video on what to look for when shopping for a used F30 340i.
Very helpful video bro...thanks...lots of additional info also..
Thanks for this video…much needed information.
Great video!
Spot on tip at the end about the coolant cap. I have the same crusty residue around the thread, which means the cal is the culprit and is leaking from there!
Thanks buddy!👍👍😉💪
any update? did this work for you? i have the same residue around my cap cover and wonder if this could be the cause
holding my sides for the Die Hard clip... 😆 Thanks for the info btw, it's very helpful.
Great video great explanation. Thanks.
I've heard about that coolant cap issue as well. I had the same low coolant error come up on my car several times after topping it off. Ended up taking the car to the dealership and they replaced the water pump. Great video though! You're like the encyclopedia for B58s!
Is that sorted the issue? Were you loosing much coolant when you had an issue with the water pump? Is that was under the warranty?
Thank you, this is very helpful information.
Very useful video. Thanks for sharing.
Thank you sir. Very helpfull.
Thanks for posting your experience! My filler cap is leaking as evidenced by white crust around the base of the filler hole so, I’m replacing the o-rings on the cap instead of buying a new cap. I’ll update after a week or so with results 👍🏼👍🏼
Update. I put two size 18 orings to replace the old flat ones. A week later and my cap is no longer leaking.
Thanks a bunch for this great video 👍🏼👍🏼👊🏼
great video. Thanks
Good info thanks.
Great video
One thing to add... the smaller reservoir is for your intercooler. The intercooler is built into the intake manifold on the B58. Another loss of coolant can be your intercooler leaking and sucking coolant in with air. This will also cause white smoke issue.
This is only related to getting a low Coolant message on iDrive. The error is not linked to the intercooler system.
Will the small tank low coolant sensor faulty and getting low coolant faults on idrive?
@@chongyeouwei3433 just now seeing this. The small tank doesn't have a sensor unfortunately
@kern417 thanks for uploading this video I'm subscribing right away.
How often does the ext. engine coolant need to be refilled?
I got the low coolant warning message, so I filled it to the maximum mark, two days later I take my car for an oil change to a local shop and they checked the antifreeze plus the external engine coolant (is this a separate reservoir?) but no leaks or problems reported.
Please answer this if you can, my 2017 X3 needs around 300mL of coolant every 6-12 months it's @66K bought it used from the dealer 4 years ago @15K. How normal is that?
No leaks visible so I will follow the steps of this video and hope to find some answers. Thanks in advance!
Losing coolant is not normal. It may be evaporating past the cap.
Great video I had coolant being burned up and BMW diagnosed it as a faulty oil filter housing because I needed it right away they hit me for 3 k you explained what the large tank is full of of what is the small tank for and do you need to top that off also really appreciate the video thanks
If it's low then yes you need to top it off
Hey man, thanks a lot for you detailed explanation. Yesterday I got that message and I toped off the coolant. I went for a drive after that and I start smelling something burned after a short drive. Any thought off why this is happen ? The message is gone tho
Just got the idrive notification so now im here lmao, its 9 degrees here so im thinking maybe its the cold? Gonna order a cap and top off
34k miles
Hey man so been a few days now. I live in Michigan and every morning I wake up with the car cold, and the refill coolant sensor is going off but levels are normal. After driving for a bit, my JB4 tells me my IAT is above 100 and the sensor usually turns off. I’m guessing that means the whole thing needs to be replaced.
1:15 reminded my of the water puzzle from Die Hard 3.
Thank you.
Great video. I am thinking of getting a used 340, and I noticed you made a video about the PCV issue and now a video about the coolant. Would you say this is a reliable engine for the most part with a few minor issues? Are there any other issues with this engine?
Yes there are other potential issues but overall it is reliable. There aren't any common catastrophic failures that cause failures like engines, turbos, etc. They're also more common on early models (2016s) but you can see things like this are a quick fix if it happens to you.
Yo i recently ran into a problem with my 2018 340i idk if to be concerned or not but every time I do a couple of pulls nothing crazy the center console seems to warm up at first I thought it was because of the heat but it still does it even when cold any suggestions?
Thank you
Do you have any tips or suggestions on opening the second reservoir cap (expansion)? Mine is stuck and pretty difficult to undo. Thanks!
Aye bro thanks for the video. My main expansion tank is fine. (Blue coolant and correct level) but the smaller coolant tank is over filled with a clear liquid. (Smells like coolant but it’s not blue). So far I’ve never gotten any warning lights and the operating temperature has been normal and consistent. If you’ve seen or heard of this before I’d really appreciate some advice on if I should keep running it or take action. (Not under warranty btw)
It may just be more diluted so it looks like water. You won't get any warnings from it being overfilled but can use a turkey baster to suck some out for peace of mind.
Thanks much for this. The main coolant reservoir on my 340i is just at the min right now and I had just chalked it up to the extreme cold we had here in the Midwest since there was no warning in iDrive. My E46 330i seemed overly sensitive to coolant level, so I expected a warning if anything was amiss. I've also noticed little spots on and near the reservior that don't belong, so I highly suspect that it's the coolant cap.
It could be the reservoir as well. That was leaking on my X5. A pressure test will confirm and some dealers will do it for free/cheap if you don't have the pressure tester.
@@kern417 sounds good. As soon as the snow melts, I'm going to do coils & plugs so ill check it out then. Thanks a ton for your vids as they are super helpful. The last motor I really learned well was the audi 2.7T APB in my 01 S4 so I've been trying to learn the B58 now. Your stuff is really informative.
@@kern417 Hey...just wanted to say big thanks for pointing this out. I replaced the cap on my main coolant reservoir, topped it off and it hasn't dropped a bit since.
Over this past weekend, I replaced the stock airbox with a CTS Turbo Intake (despite all the recommendations that the stock airbox flows fine) and I really like the sound. I was pulling 4th gear to redline yesterday morning and threw a 20E120 - Crankcase Ventilation Host disconnected code though. I checked all the fitment, tightened down the hose clamps a bit more and it hasn't come back yet. I haven't had a chance to pull 4th to redline again however. I got a couple questions if you have a chance to answer:
- Does the crankcase vent cycle back into the turbo inlet?
- Is there something I could log to get more insight on what is causing the code?
- Is installing a catch can worth it on these engines? I've heard the PCV system is adequate to where an OCC isn't really necessary on stock turbo....thoughts?
On my B5 S4, the OCC was an absolute must because that PCV system was junk from the factory.
Thanks for all the great content.
Literally right after I hit send on this, I saw you have a vid on the whole PCV system. I'll watch that now.
Thanks man. I also have a video on the code you got if you check my channel. It's a very common code to get with an aftermarket intake.
The crankcase vent has to recirculate before the turbo, but our cars do not have a tendency of pushing a lot of oil. So for the most part a catch can is not needed.
Another superb informative and well explained video. As said above,the smaller reservoir is for the large front intercooler (that you upgraded in a previous video), air to water intercooler in the inlet manifold and to the turbo itself.
I have a 2017 M140i (UK) and in 18 months of ownership I’ve had to top-up the larger engine side coolant reservoir with approximately a quart full of distilled water,tiny amounts at a time as I check it regularly.
My thought is evaporation via a faulty reservoir cap.
One question though- to refit my cap (stone cold) takes extreme effort,I certainly can’t just spin it on until the locking point like yours? (The threads are clean and no tell tail sign of leakage around the reservoir top🤷🏼♂️)
The small reservoir is for the intercooler system only. The turbo and engine run off of the larger reservoir. Like I mentioned in the video, the small reservoir doesn't have a level sensor so it doesn't throw an error message for low coolant. That's why it's not included in this video.
You may have a faulty cap If it's difficult to put on with the threads clean. There shouldn't be any excessive resistance.
@@kern417 thanks kern,I was told the larger reservoir was engine and smaller one the turbo side of things. I’ve no doubt you are correct though,would make more sense to use the larger volume of coolant to help in cooling the turbo itself and keeping the other circuit to concentrate on IAT 👍.
As for the reservoir cap on my m140 it appears a known issue here in the UK. Some have even been applying a very thin film of lube spray around the last few threads which I won’t be doing.
I’ll take the issue up with BMW themselves.
All the best and keep your great information and content coming,
Ant.
I had this coolant message pop up and my b58 was overheating. I put some coolant into the tank and drove it to the dealership where they said that they coolant hose snapped and not feeding coolant correctly into the engine. They replaced the hose and the issue was fixed.
glad you got it sorted. i'm sure other areas will be identified as common for coolant loss as our cars go up in mileage.
Just bought my cap today
Great video. Where did you get your new cap?
Dealership
Going through this problem with my 2021 M340i . Going to the dealer Monday 🤦🏻 there is a leak I saw the coolant dripping underneath the car
my second one the little one cap is full even on top of max almost full cap, so what should i do to take it off untill between min and max or ?
What about the replacement intervals for the intercooler coolant system? Does it use the same BMW coolant as the engine side?
Question for you, where can I find the coolant temp sensor? He dealer told me a mouse chewed the wiring for the sensor so they would need to replace it. They tried charging me 1800 to do so. I am capable of doing it myself as long as I know where it is
so it's the scariest when you do the pressure test and the pressure does go down
This was very informative thanks man. Our 2018 X3 21k miles gave low coolant message. I topped off the large tank with bmw oem blue coolant. It took a little over 1 quart. I did not dilute it down just added it straight. Any concern for doing that ? Thanks
A quart is a lot. When you have a chance I will use a turkey baster to take some out and add some distilled water. It probably isn't a big deal now if it's winter where you are, but it's best to have closer to a 50-50 mix.
@@kern417 thanks for the reply I might do that. The big question is how the hell did a quart disappear lol will have the dealership check it out also.
Thanks a lot!! can you show us how to flush the cooling system, please??
Sure. I've talked about the steps in my other videos piece by piece but I can put it all together in one video
@@kern417 Joining! Yeah would be great!
Hello Kern, my BMW 230i has two tanks as in your video, the bigger tanks has a normal level coolant, but a small tank on the lower right has coolant disappeared, I tried to top off with distilled water, but it still leaks in somewhere until I can't see level of coolant , let me ask you. Can I drive for 35 miles from home to dealership to let them fix the coolant system?
Thanks for your reply!!!!
Hey Kern, totally unrelated but I had a quick question for ya. I was servicing my transmission just a couple of hours ago and guess what? I overtorqued and snapped one of the transmission pan bolts. It's bolt #1 according to ZF's torque pattern. Do you think I'm screwed and need to take my car somewhere to get that screw out/the job redone or do you think I'd be fine without that screw for some time.... Thinking about just monitoring the fluid levels and I'll probably call a mechanic tomorrow but I wanted to get your opinion... Thanks!
I would recommend getting it fixed but if you're diligent about checking to make sure it's not leaking then you may be able to get away with it until you can get it fixed.
what is that thing in the left of cap? you must open it with keys or ?
Be the biggest homie ever and post a video replacing the oil filter housing
pouring coolant in my bmw and its not holding the coolant at all, all spills right out , what should i do?
Thank you Great video. What is the smaller reservoir for? I heard it was for the A/C system.
Intercooler
@@kern417 I have a 2018 430i F33. Is it the same 50/50 mix? I took the car into BMW because the A/C would cool for 2 minutes and go warm. I thought I had a leak or other issue. Service manager told me the intercooler was low and then the compressor doesn’t lock in. Now 12 months later it’s happening again. I’m off warranty now and hoping it’s that again. I could do it myself.
Yes
@@kern417 thank you!
Would the pressure test failing...and no signs of leaks indicate turbo or head gasket? Just got this issue this morning. Once again thanks for you help. Gonna top it up, do a pressure test and go from there.
Most likely indicates cap
@@kern417 thanks dude, bought another one waiting to arrive. Problem is since topping up Friday...checked this morning and coolant is below min again...think gonna be a bigger issue than the cap. Still can't see a leak
When my car was under warranty, the dealership did all these steps and said you have no leaks, it is normal for this engine to lose a little coolant. The nerve of these people. They should have changed the cap under warranty if all else failed. I check my coolant every so often after my initial warning and i too see a little white crust around the cap. I suspect it is my culprit and because it's cheap, I'll start with replacing the cap (based on the dealer saying no leaks exist, pretty new car still)
I had to fight with my dealership to get the cap replaced. You're not alone.
I have an alert from my 2013 650i Gran Coupe. Message: "Engine coolant level too low. Risk of engine damaged! Top up the coolant at the earliest opportunity, see Owner Handbook. Caution: risk of scalding!"
Do I put the coolant in the engine coolant or the intercoolant? Please help
I rec'd 1 low coolant message since July 2017 and it's been probably 2 years. Went to dealer and they filled it up in the drive thru bay, they didn't add that much.
Good point, some people have reported that it was simply underfilled at the factory
Awesome
Is it normal for the coolant in the big coolant tank to turn clear? It used to be blue/green but now it turned clear. Should I be worried? I had this issue about a 1-2 years ago and I thought the previous owner put the wrong coolant since it was a yellow/clear color, so I took it to bmw to have the coolant flushed and refilled but now it’s back and this time it’s more clear than yellow. The smaller coolant tank is the right color it’s just the big tank that’s giving me a problem. Could it be something I have to be worried about? The temp doesn’t get high just under 250°. I’m not sure if this helps but It’s a 17 340 with 34k miles stage 2. I’d appreciate the feed back!
it may just be diluted with too much water
Hey bro! I’m picking up my b58 in a few days, any eye ball tests I should do before picking it up??
Check Coolant levels and ask for maintenance history
@@kern417 thanks bro :)
can NO coolant in b58 Cause the car not to crank at all?
Thank you for this excellent video, i have a 440i , i had the problem of lack of power you are talking about, then the fan that starts every time i stop idling. I went to bmw, they changed the water radiator. Now when my car reaches ist normal operating temperature, my fan starts at low speed, then it won't shut off again unless i turn off the engine. if i let cool for 1 hour then i restart it then the fan also starts. After 1 hour /2 hours of use, the fan switches to an even higher speed when stopped, the engine speed rises to 750rpm instead of the usual 650rpm. I had never seen this before even in high heat, i sspecify that this is seen without the air conditioner of. i don't think it's normal. Can you help me about this. excuse me for my english
Can you scan for codes
@@kern417 i had the code 20A201, on this engine it's normal the fan runs all the time at low speed.
czcams.com/video/_9ARdzz8PiI/video.html
Did you notice immediately that the new cap had girthy o rings and the stock cap seemed flush? Or is it just me. My stock cap is nearly flush where the o rings should be protruding/sealing.
I did not notice that
I have a ‘21 M5 Comp (S63) with 9k miles. I had to top off the coolant twice since I had the car (2 yrs this Aug). I took the car to BMW since my oil change was due and they ran a pressure test and stated they detect no leak.
This sound right?
Also, my car has two places to add coolant; one for the engine the other turbos.
It may be the cap itself
@@kern417 Yes, possible. I will keep an eye on it. Thanks!
@Kern417 hey brotha this morning as of 6:49 am I got a code to my bmw 535i it said top off asap following attention: scalding hazard when topping it off can I use just the 50/50 coolant mix with out using the distilled water if I have none around at the moment.
The 50/50 mix should already be mixed with distilled water
@@kern417 oh okay appreciate it boss so it should just be ready to be poured and topped of then correct. It’s cause I had seen one guy get the 50/50 bmw mix then bought a gallon of distilled water poured out half then filled the other half of the gallon with oil
I get coolant loss in my small reservoir not sure if it’s because I’m running “sport mode cooling for intercooler” on mhd but it’s like I’m topping it often , the main reservoir doesn’t move at all even after running it hot , any ideas to what the issue may be ?
czcams.com/video/_9ARdzz8PiI/video.html
thank you.. this is happening in my 37K miles 550i.. but it is off warranty. After replacing coils and injectors .. yet another reason not to buy another BMW
Question I’ve check the smaller tank and the coolant that’s in it is different from the one that’s in the larger one, when I say different I mean it’s clear is that serious issue?
Some people see that for some reason. I'm not sure why
Have 2018 bmw 330i. Got coolant level low sign. It wasn’t that low. But i have observed engine is becoming hot now. But it’s normal on the dashboard as it should be. And whenever i turn my car off even after just 15 minutes drive. I always observe the coolant is boiling inside. Means my car is boiling coolant. Engine also seems hot than regular but it’s normal on the dashboard as it used to. So why coolant is boiling??? What should i do?
take it to a shop
My expansion tank had a rupture after 5 years, just fixed
Hey, I have a question sry for bothering. I have b58 and mppsk, sometimes during winter there is a lot of smoke coming from exausth, yesterday engine took a second or two more to start ( otherwise no warning, plug sparks changed a year ago, i read the frequency should be set different for tuned cars) thank you in advance
You'll have to work through it to diagnose if there's an issue. But it's normal for a car to take a little longer to start in the cold
@@kern417 today the engine light poped up, and car is noisy, smokey and its shaking, probably bad combustion. Its still under waranty will se 🙂
Apparently around 100k miles it's common for the plug on the water pump to leak/blow out.
Just replaced mine 🙃 DIY will be up in the next few weeks
@@kern417 just noticed mine is leaking a bit. Local shop just got a 340i in around my same mileage with plug blown out, guy kept driving it and trashed the engine.
I'm at 96k miles, bought at 60. Tiny leak. Swap seems pretty straightforward if not doing the entire thermostat housing. Look forward to your video! 🍻
I got the warning message too topping up doesn't hold any fluid in the tank, I can't see a punchure in the radiators. The big tank is dripping coolant badly from the bottom right of the car do you think it's the radiator or something else?
May be a crack in the tank itself
I have a 2018 540, I have to top off probably twice a tear. The only sign I see of leaks is a white crust under the cap, thoughts ?
try replacing the cap
@@kern417 yeah it came back to leak; this time the res tank hose broke; had an old solid plastic(2018). Now the car is leaking on passenger side, continuous drip. Any thought what's on passenger side that would leak; I heard you mention turbos?
........ bet you can guess why im here.
Was driving on the way home today, got a low coolant warning. Before i even had a chance to pull over i got a engine overheating warning and immediately got put into limp mode.
I changed the reservoir cap, did the pressure test and it passed, idk what else it could be, I’m slowly loosing coolant still
Head gasket? Turbo?
I have leak at bottom of expansion tank hose - nothing cracked suspect O-ring - how do i replace O-ring without replacing entire tank or hose. Hose seems to go into the depths of the engine and I am not keen to replace that.
you can check realoem to see if one is available for your platform.
I just experienced this in my 2017 540i. Should I remove my bm3 stage 1 tune before taking to the dealership?
It would be a good idea but most times they just top off your coolant in the service bay
@@kern417 thanks
I put Peak 50/50 coolant/anti freeze in my 2017 530i. It was green - is this a major problem?
color doesn't matter. just make sure it meets the minimum requirements
My coolant level was fine and then a month later I got the warning. Had to add 32 oz total of the 50/50 mixture. It was dry. I don't know how it went from being fine when I took my car in for regular maintenance check up in July and then bone dry a month later. Seems strange to me.
What was your problem? Mines having the same problem however coolant is being lost more rapidly
@@Jessie-vg8fk I really don't know what the problem is/was. About 3 weeks ago or so had to add about 1 cup (I think) of coolant again. So it went over a year without adding any.
Ive been having these same coolant problems, took to it to a shop had a few hose replacement and I'm still have problems. It seems that the B58 only issues is the coolant issues.
Has there been engine valve cover gasket or oil housing gasket leaks yet for B58 engine?
Yes on higher mileage cars
@@kern417 high milage as 100k +?
@@treliq yes
2015 BMW 528i twin turbo 4cyl
The annoying low coolant messege every time the car is on, replaced coolant sensor under the reservoir and still the same
Any Ideas ? Thanks in advance.
I’ve a 2014 same model, same problem. Did you ever get to the bottom of it…?
Same here did you ever fix it chas
Oh shit. Is it supposed to be between the min and max lines? I topped it up right up to the max but not over it. 😅
Up to max is perfect
Can I use the same coolant for both the engine and the intercooler tank?
Yes
Hello
How can i remove the coolant reservoir to replace it? TY
Drain the coolant
Disconnect the hoses and sensors
Remove and replace
When adding water to make it 50/50 does it have to be distilled water?
Yes
Will the smaller reservoir ever need coolant added?
It shouldn't unless there's a leak
Wouldn’t just using a coolant sealing fluid just fix it?
no
Had a coolant leak had to keep refiling every morning but then it suddenly went away no leaks what so ever and but still get the “low coolant” notification
Potentially the sensor itself is bad
@@kern417 also been getting “engine High temp” code but Only been checking the coolant reservoir not the actual Engine reservoir 👀
@@kern417 my Engine reservoir had nothing in it way below min causing my engine to overheat time to put some in
How many auxiliary radiators do you have ?
1
Do you need to flush the system every time you open the caps or no?
No
@@kern417 ok awesome.. I topped mine up and heard a small amount of pressure squeak out as I slowly opened the cap. Is that also alright? Thanks for the quick response and all your knowledge in general!
@@Based_F22 yes
What is going to happen if overfilled coolant? Just checked mine car is overfilled
It can cause issues. Just use a turkey baster to take some out
I have this message for my 2013 650i Gran Coupe "Engine coolant level too low. Risk of engine damaged. Top up the coolant at the earliest opportunity, see Owner Handbook. Caution: risk of scalding"
Where do I fill the coolant, to the engine coolant or the ac coolant? Please help
How exactly do i bleed the system ? After topping it off to remove the air
I show how to bleed in my turbo swap video. Skip to the end.
I having low coolant warning on my F30 B48 engine, after I checked both tank having water above max, and I have changed the main coolant tank as well. Could you advise? Once I restart the engine the fault code gone. The next day I drive out the fault code come again.
Hai bro I’m having the same issue but I’m about to top it up later this morning so the car cools down. Can we PM or talk on whatsapp about this?
I notice since we’re both malaysians so we need to do a 50:50 mix like in the video since we don’t have winters here lol
Why don’t just buy one distilled water and one empty bottle?
Bro that pressure tester kit is $550.
My coolant isnt unlocking pls help me
Unlocking?
whats your milage
I'm at 17k but i found my Coolant low for the first time at 2k
mine needs coolant every two weeks its a pos bmw never again there only good until like 25,000 miles
Bro not even 2000 miles and my coolant disappears on the supra
Same