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2008 535xi (E60, N54) is overheating. It is throwing code…

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2008 535xi (E60, N54) is...
2008 535xi (E60, N54) is overheating. It is throwing code 2e84 - Electrical cooling pump, communication. No other cooling pump codes appear. I let it sit for several days and drove it with no problems. Then my wife drove it an got the overheating warning within a couple of miles.When it is going to overheat, the heater blows cold air. Maybe the thermostat is sticking closed? It seems odd to me that the error refers to "communication," which makes me think it's an electrical issue but I don't know how to troubleshoot it. The power supply fuse for the pump is good.
Submitted: 1 month ago.Category: BMW
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12/30/2017
BMW Mechanic: Steve, BMW Expert replied 1 month ago
Steve
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Is that the only code? Coolant pump!
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