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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Red Coolant Light



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      02-04-2013, 03:21 PM   #1
svg95gt
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Red Coolant Light

Got in my car (after it sat all weekend) and got a red triangle/exclaimation error. Looked in the service screen and the engine coolent was red. I put in some distilled water and finished driving to work. I checked the level this am (cold) and it was sitting on the bottom.
Car DID NOT go into limp mode, it felt just fine. The error was on the whole time though.

Any ideas? I did just have the car in less than 50mi ago for an oil change.
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      02-04-2013, 03:29 PM   #2
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is your rad fan at full blast too?
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      02-04-2013, 03:35 PM   #3
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is your rad fan at full blast too?
Didn't notice if it was.
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      02-04-2013, 03:41 PM   #4
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I'd check for leaks first. You might be losing coolant somewhere.
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      02-04-2013, 03:49 PM   #5
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Could be water pump failure.

Pretty common.
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      02-04-2013, 03:52 PM   #6
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RED means high priority warning. Usually when you have a leak goes to yellow first. Unless its a big leak of course. I Hope I am wrong and its only a small leak and not anything more serious. Add coolant keep us posted.
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      02-04-2013, 03:54 PM   #7
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Your water pump and/or theromostat just got got, if I were a betting man.
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      02-04-2013, 04:05 PM   #8
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I wouldn't have thought I would have made it to work if the pump was out. I will check for a leak before I head home and after I get there.
How much is it to replace either of those? Can it be DIY in a driveway with hand tools?
Thanks for all the help!
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      02-04-2013, 04:08 PM   #9
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Also, I didn't add much water this am before the needle moved (granted I drove for about 10 min first). Didn't notice temps being higher than normal (around 210-220 maybe, but constant). No odors, no puddles, drips in garage.
I'm still suspicious of the dealership...
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      02-04-2013, 04:11 PM   #10
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Are the turbos water cooled? Maybe something the JB+ caused? Just spitballing...
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      02-04-2013, 04:46 PM   #11
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Stop driving your car, and get it TOWED to a dealer/mechanic. Your water pump more than likely failed which means your car is running extremely hot and not good.
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      02-04-2013, 05:08 PM   #12
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Or, maybe you just need a top up lol.

Our engines burn coolant and a top up once a year isn't out of the norm.

If the light comes back on after a top up, then you may have a thermostat and/or water pump issue.

If your under warranty, go to the dealer and have them worry about it.
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      02-04-2013, 05:09 PM   #13
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Quote:
Originally Posted by themyst
Stop driving your car, and get it TOWED to a dealer/mechanic. Your water pump more than likely failed which means your car is running extremely hot and not good.
+1
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      02-04-2013, 07:03 PM   #14
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Apparently this is not a coolant warning... I'm a dumbass. Yeah yeah
Thanks for all the help guys!
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      02-04-2013, 07:10 PM   #15
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Quote:
Originally Posted by svg95gt View Post
Apparently this is not a coolant warning... I'm a dumbass. Yeah yeah
Thanks for all the help guys!
So what does it mean?
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      02-04-2013, 07:17 PM   #16
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So what does it mean?
In cabin microfilter.
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      02-04-2013, 08:10 PM   #17
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haha
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      02-04-2013, 08:12 PM   #18
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Lololol. Well good result at least op, hvac issues over waterpumps any time.
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      02-05-2013, 10:40 AM   #19
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Quote:
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Lololol. Well good result at least op, hvac issues over waterpumps any time.
Absolutely!
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      02-05-2013, 11:11 AM   #20
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I got that same symbol last week and I thought it was telling it was time to change the water coolant, and I just reset it.. lol
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      02-05-2013, 12:31 PM   #21
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Quote:
Originally Posted by svg95gt View Post
Absolutely!
Lol cabin air pollution ftw over water pump issue
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      02-05-2013, 01:04 PM   #22
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While I'm glad it's not a coolant related issue, what is the light for coolant. I know the low coolant light looks like a box with water in it.
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