12-11-2019, 10:24 PM | #155 | |
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12-11-2019, 10:30 PM | #156 | ||
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12-13-2019, 12:23 AM | #157 | |
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A buddy's B58 equipped 340i has some purple looking coolant in his secondary inter cooler coolant expansion tank. Dealer says it's normal. Mine is fine. Anyone else notice a weird color in their secondary cooking circuits?
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12-13-2019, 10:12 AM | #158 | ||
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12-18-2019, 05:55 AM | #159 |
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12-18-2019, 09:07 AM | #160 |
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My main reservoir was low when I checked Sunday so the dealership told me to take it in... Picking it up tomorrow morning so will see what they say / what they have replaced. Not all bad though - they gave me a M850i Gran Coupe for the day, what an awesome machine that is!!
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12-18-2019, 09:51 PM | #162 |
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So my annual oil change came up, got a new service advisor and got the guy to do additional check while they had the oil change done.
They ran a full day pressure test, can't find any leak so far but the pressure level did drop tiny bit, so it's going to sit dealer for least another day to see what's the cause |
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12-19-2019, 10:03 AM | #163 |
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Got mine back today and they couldn't find anything. Passed the pressure test fine, and no leaks coming from anywhere... its a mystery. They did say it was "within spec" for it to lose a little bit of fluid over time. I didn't ask how it can be ok for a sealed system to lose fluid - but will keep my eye on it!
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12-19-2019, 10:10 AM | #164 | |
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12-19-2019, 06:48 PM | #166 |
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This happened to me earlier in the year on my 2019 540ix with less then 5k miles. Then it went away but came back recently right before the cars one year maintenance. I ask BMW service the same question. Just 1 year and 5k miles???
They told me that there are two coolant tanks and that this is common because it's used to cool the turbos and they run hot. Don't know but I took him at his word.
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12-19-2019, 11:12 PM | #167 |
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Let's see what my pressure test came out...
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12-20-2019, 08:42 AM | #168 |
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ok, so they tested multiple times and saying it's holding pressure, guess then I would question how did the first "a bit dropping in pressure" comment come from...
guess I'll leave it for now and if I ever see another low coolant message would definitely raise hell... |
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12-20-2019, 09:13 AM | #169 | |
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Oil change visit 2 weeks they discovered my water pump leaking and one of the turbo cooler lines as well. It will only get worse if not tackled.
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12-20-2019, 09:38 AM | #170 | |
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12-20-2019, 09:52 AM | #171 | ||
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It is no secret that water pumps are failing in the B-Series engines as early as 15K miles.
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12-20-2019, 10:31 AM | #173 |
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Yes - 2 completely separate systems - one for the intercooler and one for the engine cooling. For me (and I think all of us) is the engine circuit that seems to have the magic disappearing coolant!
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12-20-2019, 10:36 AM | #174 |
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Also the engine's main water pump in the B-Series engines is mechanical (Opposed to electric as it was in recent past) but the turbo's own water/cooling pump is still electric.
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12-20-2019, 10:52 AM | #175 | |
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Amazes me that dealers having access to a well known and documented PUMA case refuse to fix leaky components in the cooling systems of these cars. Do not accept answers such as : "They all do it" "The engine and turbo consume coolant every few months this based on driving habits" Pure unabated BS. Be polite but firm and escalate as necessary... Shop foreman, service manager, BMWUSA.
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