BMW Electric Water Pump Bleeding Procedure
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- čas přidán 11. 09. 2024
- ►If you have owned or worked on an older BMW with a belt-driven water pump, you might know the pains of bleeding the air out of the cooling system. On newer BMWs with electric water pumps such as those with the N50, N52, N54, N55, S55 engines, they have a self-bleed feature built-in.
BMW's self-bleed feature is exactly what it sounds like, the electric water pump runs to bleed the cooling system all on its own.
Follow along with Gareth as he shows you the few steps to bleed your BMW's cooling system.
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Make sure you close the expansion tank before starting the procedure. If the cap is off, it will run for a long time without completing.
You may or may not have to do the bleeding procedure (15 minutes each) multiple times to _really_ make sure all the air is out of the system.
I had an incident where a coolant hose popped off on me while out driving. There was evaporated mist everywhere, and all my coolant came pouring out from underneath and I was left stranded.
Luckily this was in a parking lot, so I immediately parked my car before the engine rose to dangerous temperatures and I shut it off.
My uncle came to pick me up and we shopped for distilled water at a nearby convenience store. We were able to pop the hose back on, fill the cooling system with distilled water, and do a quick bleeding procedure before I carefully drove the car back home.
Now I have oem bmw coolant in it again, mixed 50/50 with distilled water per instructions, but I ALWAYS do 2 or 3 bleeding procedures so I am SURE there's no more bubbles popping.
Haven't had a coolant pipe pop-off on me since.
Certainly good measure to run the procedure more than once!
For anyone wondering, leave bleeder screw in and cap on. Just did it on my 2014 435 after my expansion tank hose cracked and is working just fine.
Yep, you want to close the cap and bleeder screw to ensure there is a vacuum for the water pump.
Can you please make a video to do a full coolant flush on bmw f30 n20?
Just checked the BMW documentation and it says :
"Bleed cooling system!
WARNING:
NOTE: Do not open the coolant expansion tank cap during the bleeding procedure. Switch on the lowbeam headlights to perform the bleeding procedure. If the lowbeam headlights are not switched on, the ignition (Terminal 15) will switch off automatically after a certain period of time and interrupt the bleeding procedure.
1. Connect battery charger.
2. Switch the ignition on.
3. Switch on lowbeam headlight.
4. Set heating to maximum temperature. Take back blower to smallest stage.
5. Driving experience switch must not be set to ECO PRO!
6. Press accelerator pedal for 10 seconds to floor. Engine must not be started.
7. The bleeding procedure was started by pressing the accelerator pedal and takes approx. 12 min. (the electrical coolant pump was activated and switches off automatically after approx. 12 min).
8. Then adjust fluid level in the coolant expansion tank to maximum.
9. Check the coolant system for LEAKS.
10. If the ventilation has to be performed again, deactivate DME completely (remove ignition key for approx.
3 minutes). Then repeat from point 3.
Close coolant expansion tank."
I'm still not sure if a bleeder valve needs to be opened under the car or if the coolant needs to be filled before the bleed. The instructions say to turn on the low beams so I would connect the battery to a charger just to be sure...
This. Important the lowbeams are on. My process was getting interrupted without me realizing and after trying with them on seeing this comment it actually finished and fixed the issue I was having with passenger side heating.
So for those of us that have an G30 N63 2018+ hit your start button 3 times to put it into diagnostic mode then follow the above steps. Watched a crap ton of videos on older models and couldn’t get it to work. Tried it in diagnostic mode and it worked.
@jt Trousdale so for us with the newer G30 there’s no need to do all this low beam on bullcrap they are talking about ?
To not be depended on the battery so much, you can just use the seat belt, it will make sure the car will not turn off. It's what we do when we install, for example, a tune .
If it bleeds we can kill it
Oh shit, why is that bmw attacking you? Get to the chaw-per!!!
Stupid question... I see u have the reservoir cap off, do I have to have the bleeder valve open as well or does that not matter???
Thanks!! You should make some N51 specific maintenance or mod videos! Well, that's my request! I know it's basically the N52, but I'd like to know more about the specific differences!
If you want more hp from a n/a engine. Install hotter cams.
If your engine is boosted. Turn up the boost.
Any ideas as to why the bleed procedure will run up 30 mins without completing?
Yes to get it off the bleeding mode when you start the car again just change the temperature from 84 to your preferred temperature. Sometimes it stays longer than the usual 15 minutes
Also works with the B series engines, but with a slightly different procedure.
what's the different procedure for B48?
@@oli31 after you initiate the bleeding system as in the video, start the engine. The idle speed will hold at 1200. Then, bring the rpm to 3500, hold for 10 seconds, then let it idle for 30 seconds. Repeat 4 more times. Then let the bleeding system finish on it's own with the engine running.
Hello thank you for making this short video!!
Question: while holding down the accelerator pedal for 10 second and the pump comes on, do you have to continue to hold the pedal down or can you remove your foot from the pedal once the bleeding system comes on? Thanks
Once the water pump turns on you can take your foot off the pedal.
@@fcpeuro I hear my water pump kick on after the 10 seconds but it seems to stop after maybe 5-10 seconds and I never hear any sound and I'll wait for minutes but nothing. I know you might need to add a charger but I don't even get to the point where the car wants to shut off. Should you hear the same water pump sound you hear at the start, the entire 10-12mins?
@@keithbailie3014 looks like your battery is not fully charged
I have a an f30 bmw 320i 2014 and my electric water pump (randomly) turns on after the car is parked and turned off, the problem is that when this happens, the electric water pump never stops and it drains my battery. The only way it temporarily stops is when i open o close a door of thw car. Recently i changed myself the thermostat (using one of your videos) hoping this would fix the problem, but it didnt, and i first realized it would be having this issue because when i started the coolant bleeding process, the electric water pump never stopped, draining again my battery. Do you think i need to replace my water pump? Or is it another problem like an electrical one?
What if you don't hear the electric water pump come on during the first 20 sec of having the gas peddle pressed? I verified that my battery was fully charged before trying the procedure? For context, I have a 2007 Z4 3.0si.
Hi FCP Euro, Thank you. Do you have a coolant bleeding procedure for my 2018 x3 M40i? I think it has two coolant reservoir tanks and two electrical pumps.
Thanks Gareth such a simple and easy video to follow. So once I have replaced the coolant tank, I need to fill up the coolant tank with coolant right to the top (where the cap is) and then run the bleeding procedure to remove all the air pockets in the pipes, is that correct?
So my pump stayed on for 10 minutes and 22 seconds It turned off when the heater turned off with the ignition I had the door open and didn't touch anything else... I heard it running I'm just not sure why everything turned off within that time somebody told me that on the F30 you're supposed to turn on the headlights on the low beams I don't know if that's true.. 2018 F30 340ix ..
Keep it simple thanks
OMG, thanks a lot!!
But, what about the B48 or B58 engine? Is it the same procedure or do I must use a vacuum system refiller like the venturi valve?
Thats great i might buy one..
I just replaced my 2003 bmw X5 4.4 water pump, thermostat and coolant reservoir.. this did not work.. I'll check my battery next 👍 thanks
I have 2018 330ix B48 how often should the coolant/antifreeze be changed.. every 30k miles I heard from someone... Don't know if that true.. and I don't want to go by what the dealer says because these are the same people that told me it's ok to change my oil every 10k miles or every 12 months witch is just crazy to me.. But what would you guys recommend on the coolant..?
This purging procedure is indicated by the mark, when the electric water pump is changed.
Just curious...Does the old fashion way of running engine at idle with coolant cap open/removed still work for these engines?
Yes. You can do that as well. The N2X and N5X family of engines are not as prone to airlocks and the system is considered self bleeding as the expansion tank is the highest point in the system. It is ultimately easiest to run the electronic self bleeding procedure since the engine is off and it gives you the opportunity to identify possible leaks or connection problems from service work.
@@fcpeuro Thanks, I always enjoy your videos...very cool and I like purchasing from FCP.
I didn't know they had an electronic wp until yesterday.
Can you please help... My car BMW 2014 X3 F25 the Electric Water Pump Bleeding was working fine twice. Then, it stop after I used the Blue Devil Head Gasket Sealer. The Engine getting hot. So, I changed the Thermostat and clean out the Reservoir Tank. Same issue. Should I change the Water Pump? Is there fuse that I should check?
I got 3 Codes:
1) CD9010
LIN, Message: Electric Coolant Pump: Missing.
DTC Status: Current
2) 1A2004
Electric Fan, Actuating Wire: Line Disconnection
DTC Status: Current
3) 1A2002
Electric Fan, Actuating Wire: Short Circuit to Ground
DTC Status: Current
Please help :) Thank you & God Bless
Great stuff, thanks SO MUCH!!!
Perfect
Good information. Do you have the instruction to bleed air out of the 2005 E60 M54 engine ? My car does not have electric water pump, it is belt driven.
Similar process. Heater settings on max. Fan speed low. Leave the expansion tank open. That is supposed to be enough but never worked for me. I would eventually start the engine once I was sure there was enough coolant in the system. With the pump running the air comes out quickly. Top up as needed.
@@kneecaps2000 Thank you for your reply.
New water pump and thermostate, now water pump keep running after car shutoff, any idea ?
I just have the same problem. I replaced the thermostat thinking it would solve the problem of the electric water pump never shutting off after stopping the car. But it didnt, i started the bleeding process and it never finished because the electric water pump never turned off. Did you solve the problem????
@@rambache yes !!! The water pump and thermostate has to be original ,if you drop a chinesse parts thats whats happens ,in my case the water pump was original but the thermostate not and thats was the problem
@@nossrc5638 Thanks for the quick respond! That is really weird 🤔, my water pump (still is) and thermostat were original parts since new and with them the problem started. 🥲
@@rambache Well, in that case, take the car to code, sometimes the computer does not register the new parts and you have to code them manually by computer, if you look closely, each part has a code, i hope it helps you goid luck
@@nossrc5638 No, you don't need to "code" the new water pump or thermostat... These are not fuel injectors lol
Does this apply to 2015 X5 35 diesel??
What do you do if the procedure doesn’t stop after 12-15 mins I tried to disconnect battery for full day and connected it back and when I insert key my waterpump start doing the procedure again
What if the AC system is out how do you get the water pump to work.
Thanks Champ
When I step on the gas pedal should the ignition be turned on or should this be done only on accessory mode?
Only on accessory mode, the engine should be off
I did this, didn’t turn on the car fully. Noticed the coolant had lowered in the container. Also saw a small puddle under the car. FYI I had the water pump changed 8 months ago. Any suggestions?
I have a BMW X5 2016 and my bleeding procedure for my water pump keeps going on and on after the ignition is turned off and resulting in bleeding my battery do you have any fix for this situation thank you
I have the same problem how u fix ?
Thank you. God bless you and those like u
car . I still have the car asking for coolant after it’s hot. When I remove the cap halfway I hear a lot of air coming out. Is that normal? I did change a hose and he replaced another piece under the manifold to remove the part. Any ideas?
hello and all the best for you. i have an issue, my 320i e91 2007 keep coolant temp at 79-82°. its not bleeding right or thermostat is dead !? thanks.
The coolant pipe still has to be undone right? Having SUPER trouble trying to find my f20's bleeding pipe/plug...Any Help?
I changed my water heater control valve and topped it off with coolant but did not do this and now my ac when on auto does not blow out cold air properly its build top then is like it switched to low with out me doing anything should I bleed it?
I have a bigger issues...I change thermostat and bleed system...it blast all Coolant out from been hot
And sound boiling...
Why
Where is the coolant going? Back to the engine cooling chambers? Bleeding means?
Bleeding means removing air from the system. Same as bleeding your brakes.
Can it be bleed old way as well??? Or onlt this way??
Oh man! I really need help here 🙏 I have a 2006 BMW 330i and I ran the process and worked the first time. I topped it off, turned on the car and it overheated. I tried to run the process again and I couldn't get it to bleed anymore. I checked all fuses under the hood as well and all are good. I can't figure out why it won't run anymore. I'm stumped 🤔
New pump sigan viendo
Oh you don’t do trickle setting for water pump bleed? Looking for a battery maintainer to do thorough flush.
You can certainly do so during this procedure! We have a few NOCO units on FCPEuro.com that can help you with that.
@@fcpeuro I appreciate reply! Forgot I had a jump pack that is capable of AGM 2/10/50A. Do you think the 10 amp will be sufficient?
Very helpful video. Does this work for N62 engines aswell?
HI Benito, the process should be the same for the N62!
Aren't you suppose to open the bleeder valve on the coolant over flow tank? Thanks.
Hi Elwood, on these vehicles with a self bleeding function, it is not a requirement.
@fcpeuro what do you mean it’s not a requirement how does air get out of the system is closed
@@Heavlysedated I believe when u first refill it u have to have 3 bleeder screws open then when it stops bubbling and comes out like a river u close it back up then start bleeding procedure
Does this apply on manual transmission as well???
This problem could see a damaged water pump ,? (Engine cooling system, reduced power operation: coolant pump temperature threshold 1
exceeded.) code 20A904
Hi mine did not turn off after bleeding what could be the problem?
What happens if you dont do this procedure after a ofhg? The pump goes in some sort of safe mode or something? Could you experience loss of power because of that?
Hi Catalin, what can potentially happen is an air bubble in the system. Depending on where it gets trapped, it can cause weird fluctuations in temperature throughout your system.
@@fcpeuro ok so it could not have an impact on how the engine performs
@@fcpeuro I think that's what is happening to my X3, I just changed the plastic hose flange to the metal one, and I did the bleeding procedure but I don't think I did it correctly and now when I drive it, after 5 miles the temp. gauge goes high and the fan comes one, but after I turn the car off, it goes back normal...do need to do the bleeding procedure again?
I'm not throwing any codes or have any leaks
Tried on my BMW x5 F15 2014 model but the pump didn’t kick in.
I canceled the hitting system in my z4 2006 😅 is it possible to do it
Hi there i was wondering if you happen to know is my 2007 bmw 320i msport 2.0l petrol has this function the engine code is n46b20bf any help wpild be appreciated thanks ian
Do you have a video on bleeding a N63 engine / turbo intercooler side in particular. I Thank you for this video 👍
Not currently Daniel, but we do have a list going for the N63!
@@fcpeuroany updates on this?
Venting cooling system: Note:
Do not leave the coolant expansion tank sealing cap open during the bleeding procedure.
Ensure that both cooling circuits are filled before starting the automatic bleeding procedure. The bleeding procedure is automatically started simultaneously for both cooling circuits. If the bleeding processes is started while one of the cooling circuit is empty, there is a risk of damage to the coolant pump from running it dry.
Switch on the low-beam headlights to perform the bleeding procedure. If the low-beam headlights are not switched on, the ignition (Terminal 15) will switch off automatically after a certain period of time and interrupt the bleeding procedure.
1. Top coolant up to the upper edge of the expansion tank. Coolant level may not drop further! No drop in coolant for approx. 1 minute.
2. Connect battery charger.
3. Switch the ignition on.
4. Set heating to maximum temperature. Press Automatic button. Then set the blower to the lowest speed.
5. FES (driving experience switch) must not be in ECO PRO!
6. Press accelerator pedal for 15 seconds to floor. Engine must not be started.
7. The venting procedure is started when the accelerator pedal is pressed and takes approx. 12 minutes.
8. Refill expansion tank up to top edge immediately after drawing off until empty.
9. Adjust expansion tank to maximum level at end of bleeding procedure.
10. Check cooling system for leaks.
11. Close expansion tank.
12. If the venting procedure has to be carried out again, allow DME to drop completely (ignition key removed for approx. 3 minutes), then repeat from Point 5
Should you leave the cap off and loosen bleeder screw ? Or close both?
Cap on loosen bleeder, some people leave the cap off but it’s not necessary and can cause a mess.
mine wasn't working, my 740li kept turning off although i could hear the pump starting to bleed. soo you have to activate the hidden menu, hold down dash button, then scroll for system test, then hold that down, then it will ask to start and hold that down. car will stay on and the bleeding will commence👌
Just replaced the water pump and thermostat, I have good stream coming out when the car is on but no water streaming whn car is off during bleeding process. I hear the water pump activate but no water streaming any help? Single dad here thanks
Wait I taught you supposed to keep the headlights on auto?
Hi is it the same procedure on N47 engine?
Hi PG, as long as it is equipped with an electric water pump, the idea should be the same. Some models require you to turn on your low beams before you initiate the pump.
@@fcpeuro Thanks but no electric water pump
Same for S63 engines?
Kind of an oddball question, but could you use this method to drain the cooling system by detaching the return hose & directing the flow to a bucket?
Yes, but you also risk burning out the electric water pump by running it dry. Alternatively, you could flush the entire system like this, but it would take a long fucking time lol.
@Poverty.404 that's what I thought, but I've never been afraid of asking the crazy questions. Actually DOING the stupid crap that pops into my head is a completely different story 🤣
Does this work on N47 engine?
What’s the benefits of bleeding the system?
If you don’t bleed it, the engine or cooling system could have air trapped, giving you a hot spot that can damage the engine. Sounds absolutely necessary.
I have a pattern goggling sound coming from the AC vent especially with the heater setting while driving. It comes in a 2 sec pattern.
I just replaced the thermostat and do the bleeding procedure once, do I need to do it again to resolve?
Hello, if it sounds like you have air bubbles making their way through your heater core, we would highly recommend bleeding the system again and topping off the reservoir as needed.
Hi, should you top up the coolant before doing this procedure?
Yes, remove bleed screws and fill expansion tank with coolant until no air bubbles, just coolant comes out of bleed screw holes. Replace bleed screws. Ensure expansion tank is brim full and replace cap. Then you can start this procedure. Air from the system will get trapped in the expansion tank so the coolant level should have dropped when the procedure is finished. You may need a syringe to remove excess coolant from the expansion afterwards.
I tried to activate the procedure but for some reason nothing happens. It's a 2016 320i with B48 engine. Will I be OK to just fill up the system, keep the reservoir cap open and start the engine and let it idle until it's warmed up obviously making sure that the coolant tank has coolant in it all the time?
If you didn't already, you may need to ensure your battery is fully charged, and on a tender, for it to allow the procedure to active. You may be able to bleed it by letting it get up to temp and allowing the thermostat to open, otherwise, that will be causing an air bubble until it opens.
How about if it doesn't go onto bleeding mode?
I tried 5 times on my 528i and couldn't bleed the system
Hi Hector, you want to ensure the vehicle has a sufficiently charged battery, if possible you may want to hook it up to a charger. Ensure the door remains open and try it again.
@@fcpeuro Thanks for the response
I will make sure battery is fully charged and try again .
@@fcpeuro Oh.... the door needs to be left open? That might explain why the process seemed to stop once I got out of the car...and closed the door. Would you need to bleed the system after changing oil cooler gasket, I assume so?
Now I know why my won’t work probably I have a weak battery
How do you do it on N63
Is this done hot or cold? Do I keep the cap screwed in or open?
My upper radiator hose collapse in the morning, so there is negative vacuum, any advice?
they dont care.. mine did same
Should cap of expansion tank be on or off during the process?
It should be on. Close it fully, that's what bmw says
So when we use the air release screw on the expansion tank (the little black plastic screw) to bleed the air out of the system? Should I leave it loose during the whole 8 minutes duration when the electric pump runs?
Why can no one answer this
No. Do not leave the bleed screw open.
@@cbtsmith1 but from time to te when engine is cold and off by loosening bleeding screw i could get air out
What about the N63TU?
Would this be the same bleeding procedure for a 330i B48 2.0L engine?
yes the same
Hi , can you please tell me how to stop this process , each time I'm opening the doors or lock it pump automatically start and it cause my battery drained completely .
bad water pump
Really weird, I have a 2008 528i and I just installed a new water pump yesterday and tried multiple times to do the bleeding procedure but it just wont do it, the pump works great though because I turn on the engine and i can see coolant shooting a very strong stream but I cant for the life of me get the bleeding process going.... i feel like there is air trapped in my heater core because my heater barely puts out any hot air even after driving 20 miles last night.... never overheated though and level looks proper.
I also have a brand new battery and for the hell of it I put on a 30amp charger while trying the process.
Man i have the same problem! Did u finally fixed it?
@@jaraujo9881 nope it never worked but my cooling system is all good
Hi.. my F10 520i 2012, the radiator fan spins at max speed very loud especially when i stop or idling and with high outside temperatures. No overheating no error code. Flushed coolant, pulled a vaccum with tool and followed the bleeding procedure but problem still unresolved. Coolant flow stream in the tank is good so i assum the pump is good. Replaced thermostat and tempt sensor but no help. Been driving with this problem for over a year with no overheating. Please help no one has figured out the issue so far
Idk about BMW but I work on other cars and that usually happens when the fan control module located on the fan goes bad, ecu fail safes by blowing max all the time. Then again you don’t have any of the common codes for a failed water pump?
Also my 328i had that problem when the coolant temp sensor went bad, but you said you replaced it already
Thanks for your reply. Yes I changed the temperature sensor and thermostat I don't have any water pump or fan error code. I don't know what to do next before I change the water pump which is costly. I must say the oil temp on the gauge never exceeds 90 degree Celsius. However at temperatures above 90 degree Celsius in the hidden menu the fan starts increasing in speed to max
@@kevinmpe8363 hmm usually fan control modules don’t trip codes, does it just always run even when it first starts or it has to reach temp and then it just stays?
@@Use2FACTAUTH when I start the car the fan starts running immediately but at low quiet speed, even with AC off. As the temperature goes up the fan speed increases and increases to maximum. Then the speed starts to switch between medium and maximum very loud when idling especially with high outside temperatures
Do you hold your foot down 8-10 minutes
Mind is not doing it...smh does this mean I need a new water pump?
Taylor, you want to make sure the battery is fully charged, and the door remains open, heat on high... If at that point you still cannot get it to go, there is a possibility the pump may be dead. A further inspection will be needed.
@@fcpeuro Thank You
@@fcpeuro water pump or Auxiliary pump?
Do I leave the bleeder screw loose.during the purging?
No. Also, don't leave the cap off.
@@cbtsmith1 Thank you, I did the job and it went very smoothly.
How do we know if our battery is strong?
Lol
thanks for help.
Always welcome!
Words
I need to no more about bmw system boos
What about B47 engine f10?
Is this the same for 2017 430i?