E90 335i overheating

savagerb · 05-19-2021, 11:44 PM

Any ideas for me guys? My upper radiator hose split last week so I replaced it, then bled the system twice and drove it 150km no issues no overheating etc then this morning on my way to work it get the coolant alarm luckily only 2mins from my work. Let it cool down then started it up let it warm up a little and the bottom hose is warm but the top ones still cold took the cap off my reservoir and there’s no water streaming. My water pump and t.stat we’re replaced end of 2019 at the stealership. These are the codes I get 2e81 & 2ee6

SixSix · 05-19-2021, 11:51 PM

Try bleeding the system again to see if the water pump will turn on. If it doesn't then inspect the wire/connector at the water pump and thermostat.

savagerb · 05-20-2021, 12:04 AM

I did have a few issues getting it to start up the bleed but when it finally done it it worked fine. Would that be a sign of bad water pump? Not sure if I was doing the sequence right etc. also could a bad battery be throwing these issues? I’ll check the plug tonight/tomorrow and report back. Thanks for your reply

05-19-2021, 11:44 PM	#1
savagerb New Member 0 Rep 15 Posts Drives: 08 e90 335i m sport Join Date: Dec 2019 Location: new zealand iTrader: (0)	E90 335i overheating Any ideas for me guys? My upper radiator hose split last week so I replaced it, then bled the system twice and drove it 150km no issues no overheating etc then this morning on my way to work it get the coolant alarm luckily only 2mins from my work. Let it cool down then started it up let it warm up a little and the bottom hose is warm but the top ones still cold took the cap off my reservoir and there’s no water streaming. My water pump and t.stat we’re replaced end of 2019 at the stealership. These are the codes I get 2e81 & 2ee6
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05-19-2021, 11:51 PM	#2
SixSix Private 19 Rep 91 Posts Drives: (2007 BMW 335i E92) Join Date: Oct 2019 Location: Toronto, ON iTrader: (0) Garage List 2002 BMW 325xi [0.00] 2007 BMW 335i [0.00]	Try bleeding the system again to see if the water pump will turn on. If it doesn't then inspect the wire/connector at the water pump and thermostat.
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05-20-2021, 12:04 AM	#3
savagerb New Member 0 Rep 15 Posts Drives: 08 e90 335i m sport Join Date: Dec 2019 Location: new zealand iTrader: (0)	I did have a few issues getting it to start up the bleed but when it finally done it it worked fine. Would that be a sign of bad water pump? Not sure if I was doing the sequence right etc. also could a bad battery be throwing these issues? I’ll check the plug tonight/tomorrow and report back. Thanks for your reply
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