I have a different model, but this video could have saved me $1,500. I replaced every component of my cooling system, but it was an electrical problem. Good news is my car now basically has a new cooling system!
I've just completed this fix on an E61 550i LCI. For anyone looking desperately for a relay - my car didn't have one. All fuses were good and there was voltage and signal at the big connector. In the end I had to replace the fan itself. I decided to break open the defective unit - inside there's a small ECU which isn't repairable. I'm assuming something inside that ECU died. The 550i also has an oil cooler which needs to be disconnected - so have some cardboard and a pan ready under the car to catch the spilled oil.
Hi. My fuses are good too. The fan is not working. There is no voltage in the power supply cube. How did you turn on the voltage to power the fan? Need to turn on the ignition and start the engine?
Any idea why does my transmission doesnt want to shift from 1st gear when my radiator fan doesnt work. 1st i had a hunch but then when i un plug the rad fan the gear wont shift and stuck to 1st, but when i put it all back together every thing goes smooth. Plus, i got intermittently issue with the rad fan not working, i got new coolant temp sensor.
Mate i dont know if you check the comments since you posted the video but here it goes . I have the same issue my fan doesnt kick in at all but as soon i disconnect the coolant temp sensor boom it works what i do not find is the location of that part itself on 320d 2010 any advice would be very much appreciated .
Hello need help locate the cooling fan relay on a 2010 BMW 528 xdrive it's not in the trunk or in the front fender I just checked already but where it is? Any idea.thank you.
Nice job showing your troubleshooting method, but when you tested for voltage at the connector you got good voltage, which indicates the relay (that you said was bad) is working. I guess maybe you had already replaced the relay when you did that test? It would be nice if you would show what the readings are at the fan socket with a good relay and a bad relay. Assuming it would simply show -0- volts if the relay is bad- right?
So i got the a radiator fan and relay the same day, i was this close 🤏🏽 to replacing the fan first as i did not believe that the relay would fix it. the reason why i thought the relay wouldnt fix it was because even BEFORE replacing the relay i was getting voltage at the fan socket. So to answer your question: with a BAD relay you will still get voltage at the socket. It doesnt makes sense right? Bad relay means current doesn’t go from one end of the red wire to the other, but for some reason you will still get voltage on the positive wire at the socket. I actually tried looking up how this relay works to give you a decent explanation of why this happens but i cant find anything that makes sense. All i can tell you like i said in the video if everything seems to work properly (even good voltage at the socket) you might want to give this relay a try before going for the fan. I know i sound like “trust me bro, its this part” but if you use the precess of elimination to find the problem, it makes a lot some sense (price and time wise) to go for this relay than the fan. Sorry for the late response and hope this helps
LCI E61 2009 N47 Hi. Does anyone know or have faced such an error? ISTA wrote: DDE: Electric fan, starting. CODE: 0041F2. I did a test, but it doesn't turn. Maybe there's something wrong with the program. I installed the second one, nothing. Does anyone know what the diagram looks like and what elements work with the fan? Does the fan work with a relay? Or just a fuse? Will you help? I will add that the connection at the fan on the pins is clean and functional. The harness looks fine. No. What needs to be done to ensure there is current in the cable that goes to the fan. Maybe then the fan will work.
I get no voltage on that single wire for my 2012 335is any ideas, would be much appreciated. When I spin my fan manually with my hand it then will start to spin but stays super slow with max ac on. What controls that single wire ?
Have you tried testing the signal wire with the car on and A/C on? If you still get no signal then you can do a continuity test on on the signal wire. The signal wire goes from the socket fan all the way to the DDE/DME on the passenger side of the engine compartment. You can disconnect the socket from the DME/DDE (small socket, shouldn’t have more than 13 wires) and test it from there. If i can, ill try to upload a diagram in the description to make it visually easier.
@@gonitischki6562 try tapping your fan relay with a wrench or something with max a/c on, that’s what I did and the fan started right up and I was able to pick up a new relay from bmw for $50
Fan should come on when A/C is on. My fan didnt turn on before replacing this part (even with A/C on), after replacing, now it turns on if i turn the AC on. Yes, my car did overheat. Not to point of causing damage though
Its not located as in the video, the cable going into the fan goes all the way below the brake fluid reservoir without any other cables connecting to a relay
@@salgadationjr1677 its a 06 335d. I gave up today because i ran out of time and reinsulated the cables, reassembled everything and the fan came on for the first 5 minutes and then it died, throwing the 0041f2 code again for the fan control. At least i know the fan itself is all good. The problem is now narrowed to the relay which has unknown location or the positive cable which goes underneath the break fuid reservoir
@@salgadationjr1677 i have spent a good 4 hours trying to research this but i couldnt find anyone with the similar problem as me, everyone else seems to have that relay on the PS reservoir except me. Also I have only one fuse for the thermostat and one fuse for the fan
So i looked up the relay you saw in my video (61367661503) and it seems the fitment is only for 335d’s from 2009-2011. So your car doesn’t have it. Idk if you already did this, but check in the glove box for fuse F69 should be a 50 amp. Also check the fuse box under the hood on the passenger side and check the fuses as well as the K9137 relay.
Replaced the cooling fan but didn't fix the problem, could be the swicth but whenever i look up the fan switch for videos there's none, Update: Replacing my coolant temperature sensor, it's near the engine by the driver side it's not on the hose near the radiator, and there is no switch either near that hose, don't know if the car has one will update you again after my the part comes in, hopefully this works, it's the last thing that could be it, my coolant tank was also leaking but very slowly and barely started now, probably melted a bit from the coolant being hot and it is also the old oem one, so it shouldn't be that but it is a possibility, but again the last thing it could be is that coolant temperature sensor If not the switch but again don't know where it's at or if it even has one Note: Wiring is good so is ground, fan turns on in ista, changed the ac pressure sensor just to see if that was it but nope, ac/compressor is working, fan is just not turning on so ac doesn't work as it should, it does blow cold/stale air but it obviously could do better, changed the relay and it wasn't it, got a new fan it wasn't it, checked the fuses, wasn't it, might need a new battery because the battery is almost all used up but it shouldn't be that, car starts and everything just the life out of the battery is not as good, Conclusion: Can't be wiring/relay Can't be the fan Can't be the fuse in the glove box Don't know if it's the fan switch sense i don't even know if this car model has one Has to be the coolant temperature sensor near the engine by the driver side if not it has to be something with the ac as the last option
mine is 320d some time works sometimes not working.... after pressing ac button and restart the engine two or three times it works any idea every thing testing except that box you showed here also share the location if possible
Hi, do you have an OBDII scanner that will let you read the coolant temperature? Or check my video on how to check temperature on the cluster. Make sure you coolant temperature is giving an accurate reading! this is to check that your coolant temperature is working properly
@@salgadationjr1677 thanks for your early response.... yes I have obd 2 scanner , thermostat and coolant temp sensor working properly , problem only with cooling when pressed ac button some time works and some time not as above mentioned
Hi! Thanks for the video, I have same issue in my E91 335d but I can't find the relay you show on the end of the video...Tomorrow I will take another look but I can't find it...Where the fck is that piece...?
I have a different model, but this video could have saved me $1,500. I replaced every component of my cooling system, but it was an electrical problem. Good news is my car now basically has a new cooling system!
It's always nice to keep up with you car old or new
Thanks champ! I followed your instructions and find a simple solution that otherwise would have cost many hundreds to fix 💪👌👍
I've just completed this fix on an E61 550i LCI. For anyone looking desperately for a relay - my car didn't have one. All fuses were good and there was voltage and signal at the big connector. In the end I had to replace the fan itself. I decided to break open the defective unit - inside there's a small ECU which isn't repairable. I'm assuming something inside that ECU died. The 550i also has an oil cooler which needs to be disconnected - so have some cardboard and a pan ready under the car to catch the spilled oil.
Hi. My fuses are good too. The fan is not working. There is no voltage in the power supply cube. How did you turn on the voltage to power the fan? Need to turn on the ignition and start the engine?
Did you do the test of the fan voltage with the car on or off?
Thank you so much for your video its literally saved me
Any idea why does my transmission doesnt want to shift from 1st gear when my radiator fan doesnt work. 1st i had a hunch but then when i un plug the rad fan the gear wont shift and stuck to 1st, but when i put it all back together every thing goes smooth. Plus, i got intermittently issue with the rad fan not working, i got new coolant temp sensor.
You got a thumbs up for the pug alone!
Cant find this relay on my E61 N52 engine, maybe you guys can help me out with it.
Mate i dont know if you check the comments since you posted the video but here it goes . I have the same issue my fan doesnt kick in at all but as soon i disconnect the coolant temp sensor boom it works what i do not find is the location of that part itself on 320d 2010 any advice would be very much appreciated .
Hello need help locate the cooling fan relay on a 2010 BMW 528 xdrive it's not in the trunk or in the front fender I just checked already but where it is? Any idea.thank you.
Nice job showing your troubleshooting method, but when you tested for voltage at the connector you got good voltage, which indicates the relay (that you said was bad) is working. I guess maybe you had already replaced the relay when you did that test? It would be nice if you would show what the readings are at the fan socket with a good relay and a bad relay. Assuming it would simply show -0- volts if the relay is bad- right?
So i got the a radiator fan and relay the same day, i was this close 🤏🏽 to replacing the fan first as i did not believe that the relay would fix it. the reason why i thought the relay wouldnt fix it was because even BEFORE replacing the relay i was getting voltage at the fan socket. So to answer your question: with a BAD relay you will still get voltage at the socket. It doesnt makes sense right? Bad relay means current doesn’t go from one end of the red wire to the other, but for some reason you will still get voltage on the positive wire at the socket. I actually tried looking up how this relay works to give you a decent explanation of why this happens but i cant find anything that makes sense. All i can tell you like i said in the video if everything seems to work properly (even good voltage at the socket) you might want to give this relay a try before going for the fan. I know i sound like “trust me bro, its this part” but if you use the precess of elimination to find the problem, it makes a lot some sense (price and time wise) to go for this relay than the fan. Sorry for the late response and hope this helps
Where is the fan on/off switch for a 2008 335I coupe ?
What a great video! Well thought through and very informative. Thanks for taking the time to do it.
What part is that called
To check if your fan is working, remove the wire harness from the coolant temp sensor, the fan should start working.
LCI E61 2009 N47
Hi. Does anyone know or have faced such an error? ISTA wrote: DDE: Electric fan, starting. CODE: 0041F2. I did a test, but it doesn't turn. Maybe there's something wrong with the program. I installed the second one, nothing. Does anyone know what the diagram looks like and what elements work with the fan? Does the fan work with a relay? Or just a fuse? Will you help? I will add that the connection at the fan on the pins is clean and functional. The harness looks fine. No. What needs to be done to ensure there is current in the cable that goes to the fan. Maybe then the fan will work.
I get no voltage on that single wire for my 2012 335is any ideas, would be much appreciated. When I spin my fan manually with my hand it then will start to spin but stays super slow with max ac on. What controls that single wire ?
Same Probleme i get only 0.22volts
Have you tried testing the signal wire with the car on and A/C on? If you still get no signal then you can do a continuity test on on the signal wire. The signal wire goes from the socket fan all the way to the DDE/DME on the passenger side of the engine compartment. You can disconnect the socket from the DME/DDE (small socket, shouldn’t have more than 13 wires) and test it from there. If i can, ill try to upload a diagram in the description to make it visually easier.
I fixed it, it was the fan relay getting stuck.
@@gonitischki6562 try tapping your fan relay with a wrench or something with max a/c on, that’s what I did and the fan started right up and I was able to pick up a new relay from bmw for $50
did ur fan come on when u turn the ac on before u put this part? My fan only comes on with a c on did urs overheat? No codes here
Fan should come on when A/C is on. My fan didnt turn on before replacing this part (even with A/C on), after replacing, now it turns on if i turn the AC on. Yes, my car did overheat. Not to point of causing damage though
I have the same problem, did you find the solution? @gail6904
Thank you sir. Ill lyk how it goes.
Did you find the issue?
@@jouseyjunior8874 not yet. I haven't actually checked yet but I appreciate you asking.
Great Video Thank You
Sometimes when I start the car the fan spins really really high almost sounds like a jet. Could the relay be the reason
Having the Same problem on my 09, 535i xdrive , where is the location of Cooling fan relay , and Cooling Fan switch ??
@@robertmitchem6635 mine turned out to be waterpump
Hello, is there anyway to get ahold of you? I have a question
Whats the question? I would like to answer it here (if i can) and if its okay with you. Somebody else might have the same question that you do
Cool dog
I meni se isto desava i kad je vruc i kad je hladan ako moze neko da pomogne unapred hvala
Currently struggling with this issue. Getting voltage and connection everywhere. Perhaps the relay went off? How do I find the relay?
Its not located as in the video, the cable going into the fan goes all the way below the brake fluid reservoir without any other cables connecting to a relay
What model BMW
@@salgadationjr1677 its a 06 335d. I gave up today because i ran out of time and reinsulated the cables, reassembled everything and the fan came on for the first 5 minutes and then it died, throwing the 0041f2 code again for the fan control. At least i know the fan itself is all good. The problem is now narrowed to the relay which has unknown location or the positive cable which goes underneath the break fuid reservoir
@@salgadationjr1677 i have spent a good 4 hours trying to research this but i couldnt find anyone with the similar problem as me, everyone else seems to have that relay on the PS reservoir except me. Also I have only one fuse for the thermostat and one fuse for the fan
So i looked up the relay you saw in my video (61367661503) and it seems the fitment is only for 335d’s from 2009-2011. So your car doesn’t have it. Idk if you already did this, but check in the glove box for fuse F69 should be a 50 amp. Also check the fuse box under the hood on the passenger side and check the fuses as well as the K9137 relay.
👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍
Replaced the cooling fan but didn't fix the problem, could be the swicth but whenever i look up the fan switch for videos there's none,
Update:
Replacing my coolant temperature sensor, it's near the engine by the driver side it's not on the hose near the radiator, and there is no switch either near that hose, don't know if the car has one will update you again after my the part comes in, hopefully this works, it's the last thing that could be it, my coolant tank was also leaking but very slowly and barely started now, probably melted a bit from the coolant being hot and it is also the old oem one, so it shouldn't be that but it is a possibility, but again the last thing it could be is that coolant temperature sensor
If not the switch but again don't know where it's at or if it even has one
Note:
Wiring is good so is ground, fan turns on in ista, changed the ac pressure sensor just to see if that was it but nope, ac/compressor is working, fan is just not turning on so ac doesn't work as it should, it does blow cold/stale air but it obviously could do better, changed the relay and it wasn't it, got a new fan it wasn't it, checked the fuses, wasn't it, might need a new battery because the battery is almost all used up but it shouldn't be that, car starts and everything just the life out of the battery is not as good,
Conclusion:
Can't be wiring/relay
Can't be the fan
Can't be the fuse in the glove box
Don't know if it's the fan switch sense i don't even know if this car model has one
Has to be the coolant temperature sensor near the engine by the driver side if not it has to be something with the ac as the last option
mine is 320d some time works sometimes not working.... after pressing ac button and restart the engine two or three times it works any idea every thing testing except that box you showed here also share the location if possible
Hi, do you have an OBDII scanner that will let you read the coolant temperature? Or check my video on how to check temperature on the cluster. Make sure you coolant temperature is giving an accurate reading! this is to check that your coolant temperature is working properly
@@salgadationjr1677 thanks for your early response.... yes I have obd 2 scanner , thermostat and coolant temp sensor working properly , problem only with cooling when pressed ac button some time works and some time not as above mentioned
Hi! Thanks for the video, I have same issue in my E91 335d but I can't find the relay you show on the end of the video...Tomorrow I will take another look but I can't find it...Where the fck is that piece...?
Did you check next to the battery? In the trunk
You didn't tell us what the name of the park was 🙄
For the 335D you can just type on google “335d fan relay” and it should show up