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Problem with overheating and low coolant level in BMW 5 Series, model year 2014: suspected defective auxiliary water pump

Hi, I have a problem with my 5 series BMW, year of manufacture 2014, gasoline engine. The check engine light is on, the car is overheating and the coolant level is low. I also notice a warning light in the speedometer. I suspect the auxiliary water pump may have restricted its function. Have any of you noticed the same symptoms and could give me some troubleshooting tips? I'm really interested to hear how you have solved the problem in your garage and what your experiences have been. Thanks in advance!

(Translated from German)

30 comment(s)

Quotation:
@CarlyAdminBenny wrote on
Hello, It is not correct to say that a cylinder-head gasket cannot break on an M57 engine. The cylinder-head gasket can break on any engine. What test was carried out at the workshop? Was a "CO" test carried out?

The garage didn't carry out this test, I've ordered it and I plan to do the test tomorrow, but I'm not convinced of the garage's diagnosis because my vehicle has no loss of mayonnaise power or even engine overheating, only excessive coolant consumption.

(Translated from French)

Quotation:
@Amine wrote on
The garage didn't carry out this test, I've ordered it and I plan to do the test tomorrow, but I'm not convinced of the garage's diagnosis because my vehicle has no loss of mayonnaise power or even engine overheating, only excessive coolant consumption.

Hello, please let us know what exactly the test revealed. Has the EGR cooler been checked to see if it is leaking internally? This also happens very often.

(Translated from German)

Quotation:
@CarlyAdminBenny wrote on
Hello, please let us know what exactly the test revealed. Has the EGR cooler been checked to see if it is leaking internally? This also happens very often.

I couldn't carry out the test normally, because after a minute the liquid was still blue, but my coolant level was at maximum and went up in the test.

(Translated from French)

Quotation:
@Amine wrote on
I couldn't carry out the test normally, because after a minute the liquid was still blue, but my coolant level was at maximum and went up in the test.

Hello, if the coolant rises, the cylinder head gasket could actually be defective. But the "CO test" would be the easiest way to find this out.

(Translated from German)

Hi I have a bmw 320 i year 2006, my auxiliary water pump has been replaced but it often does not go away in the system, after several months I now only get very hot ventilation air or only cold, does that pump need to be learned or can I learn it with carly,I reset it but it keeps coming back

Quotation:
@Erhan wrote on
Hi I have a bmw 320 i year 2006, my auxiliary water pump has been replaced but it often does not go away in the system, after several months I now only get very hot ventilation air or only cold, does that pump need to be learned or can I learn it with carly,I reset it but it keeps coming back

Hello Erhan, The auxiliary water pump does not need to be learned. It's possible that the issue is not with the pump itself but with the control unit or the wiring. I would recommend checking the wiring and connections to the pump. If the issue persists, it might be best to have a professional mechanic inspect the system. Please keep us updated on your progress.

Pump works hear it buzzing as it works, after replacing normal water pump the error was gone for 2 weeks and now it is back again

(Translated from German)

Quotation:
@Eddytheeagle wrote on
Pump works hear it buzzing as it works, after replacing normal water pump the error was gone for 2 weeks and now it is back again

Hello Eddytheeagle, If the pump is working and the error has returned, it could be a sensor or wiring issue. I would recommend checking the wiring and connections to the pump again. If everything seems fine, you might want to consider having a professional mechanic inspect the system to identify the exact cause of the recurring error. Please let us know how it goes.

The button in the car for residual heat from the replacement water pump no longer works in the car. The light does not come on when I press the button. Is there a fuse for this or is it because the replacement water pump is defective? A new one has been ordered. Do I have to pay attention to anything when installing it? LG. Thank you

(Translated from German)

Quotation:
@Mani39 wrote on
The button in the car for residual heat from the replacement water pump no longer works in the car. The light does not come on when I press the button. Is there a fuse for this or is it because the replacement water pump is defective? A new one has been ordered. Do I have to pay attention to anything when installing it? LG. Thank you

Check the fuse related to the auxiliary water pump and the residual heat function first, as a blown fuse could cause the button not to work. If the fuse is intact, the issue might be with the wiring or the switch itself. When installing the new pump, ensure all connections are secure and properly seated. If the problem persists after installation, it might be best to consult a professional mechanic. Let us know if you need further assistance.

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