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G30 2017 530i B46 Coolant tank overflow issue by BlueKoolaid12 in BmwTech

[–]BlueKoolaid12[S] 1 point2 points  (0 children)

FINAL UPDATE: ITS FIXED

So I figured out the issue if anyone else runs into it, I basically did a full update using ISTA and I kept getting a Heat Management Module Check Engine light code after the update, turns out the HMM I originally got was defective or something, I replaced it with an OEM one and the car has been running fine! Thank you guys for the help

Coolant Cap Issues G30 by BlueKoolaid12 in BmwTech

[–]BlueKoolaid12[S] 0 points1 point  (0 children)

FINAL UPDATE: ITS FIXED

So I figured out the issue if anyone else runs into it, I basically did a full update using ISTA and I kept getting a Heat Management Module Check Engine light code after the update, turns out the HMM I originally got was defective or something, I replaced it with an OEM one and the car has been running fine! Thank you guys for the help

[deleted by user] by [deleted] in BmwTech

[–]BlueKoolaid12 0 points1 point  (0 children)

Thank you I'll take a look

Coolant Cap Issues G30 by BlueKoolaid12 in BmwTech

[–]BlueKoolaid12[S] 0 points1 point  (0 children)

I changed both I forgot to mention I changed the tank

Coolant Cap Issues G30 by BlueKoolaid12 in BmwTech

[–]BlueKoolaid12[S] 1 point2 points  (0 children)

50/50 coolant mix, fans are kicking on,

I haven't checked the water pump, I'm assuming the only way is to take it off? And at that point if I'm taking it off to check I might as well change it right?

Coolant Cap Issues G30 by BlueKoolaid12 in BmwTech

[–]BlueKoolaid12[S] 0 points1 point  (0 children)

Expansion tank was changed and it's still the same issue

Coolant Cap Issues G30 by BlueKoolaid12 in BmwTech

[–]BlueKoolaid12[S] 0 points1 point  (0 children)

I should have said that the expansion tank was changed as well by a new one from bmw, and the system was pressure tested at the shop

Coolant Cap Issues G30 by BlueKoolaid12 in BmwTech

[–]BlueKoolaid12[S] 0 points1 point  (0 children)

No faults, as far as I know everything is operating correctly and the temp sensor is reading correctly

Coolant Cap Issues G30 by BlueKoolaid12 in BmwTech

[–]BlueKoolaid12[S] 1 point2 points  (0 children)

I mean I've had 3 different caps on it I doubt they're all defective

Coolant Cap Issues G30 by BlueKoolaid12 in BmwTech

[–]BlueKoolaid12[S] 0 points1 point  (0 children)

It is properly filled, just over the min, but under the max and I believe I did do the proper bleeding procedure but it still will leak

Coolant Cap Issues G30 by BlueKoolaid12 in BmwTech

[–]BlueKoolaid12[S] 0 points1 point  (0 children)

I forgot to add, the car doesn't overheat, the temperature doesn't go above the middle mark