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florida2002m3 florida2002m3 is offline
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Join Date: Dec 2014
Car: E60 535i
Default N55 water pump - 01-09-2021, 08:03 AM

Helped a friend pick out a 2017 X5 n55 a week ago.


Yesterday this popped up on idrive:
"Engine temperature: drive moderately."
Then eventually went into limp mode, engine temp on dash stayed in middle
All cooling fans full blast

So I said "****, water pump". I will just replace hers with a spare that I have for my n54.....Side note, looks like BMW changed the water pump on the n55 from the n54 one to a different mfg/pn in 2012. So this plan probably wont work.

Pulled codes, only code is CD9010 LIN lost communication with water pump. There is not a ton of info in the google/forum-verse for that code. Normally a failing water pump will throw other codes along with the CD9010.

I am going to head out under it now and look at wiring and such, but it being a newish MY, I cant imagine wiring/connectors failing this quickly.......but who knows with the bavarians


Any and all help is appreciated. TIA


2010 535i, 6mt, 80k miles, BMS DCI, JB4 G5, BMS WMI (CM10), VRSF Inlets, VRSF **, ETS 5" FMIC, VRSF CP/HKS BOV, Walbro 450, E85 BEF, E50.

2011 535i, 6mt, 1000k miles, BMS intake, JB4, VRSF **, muffler delete.

Last edited by florida2002m3; 01-09-2021 at 08:38 AM..
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florida2002m3 florida2002m3 is offline
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Posts: 147
Join Date: Dec 2014
Car: E60 535i
Default 01-09-2021, 11:10 AM

Next update:
Worked my way through the german in inpa and found the water pump page. Looks like the pump is not running and it is not reporting any status back to dme. When I run the coolant bleeding procedure I can see the via inpa that the car is telling the pump to cycle. But there is no sound from the pump.

Going to check fuse next..... after that, prolly pump
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2010 535i, 6mt, 80k miles, BMS DCI, JB4 G5, BMS WMI (CM10), VRSF Inlets, VRSF **, ETS 5" FMIC, VRSF CP/HKS BOV, Walbro 450, E85 BEF, E50.

2011 535i, 6mt, 1000k miles, BMS intake, JB4, VRSF **, muffler delete.
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