Low Coolant Warning - Common B58 Issues

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This video explains how to diagnose coolant loss when iDrive indicates that you need to refill your coolant.

BMW Special Tools
Full set: 0 494 417 (17 0 100)
Pump: 0 494 418 (17 0 101)
Hose: 0 494 419 (17 0 102)
Reservoir Adapter: 0 494 420 (17 0 103)
Cap Adapter: 0 494 643 (17 0 114)

Reservoir Cap Part Number: 17117639020

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[kern]

Order your discounted BMW parts through my BimmerNetwork Affiliate Link (Coupon Code "kern417"):

[Chris-forf]

Bro you’re a telepath. The second an issue pops up, you upload a video explaining the problem and how to fix it. Keep up the work brotha!

[cultistpriest]

My mistake was when my car would say low coolant I thought it was for the small one not the big one, never checked the big one till few mins ago she was empty. I learned something today from this video thanks alot you saved my 230i

[rotarygxl]

2017 540i, had the low coolant message yesterday morning for the first time. Main tank was bone dry. Filled it up, 2hrs later there was a large puddle under the engine. Took it to the dealer, failed water pump. Only has 40k miles on it too. Thankfully under warranty.

[kyledevore]

Got my BMW yesterday and today it gave me a low coolant warning. Thx for the info. I got 6 days left before I get to take it back or not. 😂

[gizzmocoty]

One thing to add... the smaller reservoir is for your intercooler. The intercooler is built into the intake manifold on the B58. Another loss of coolant can be your intercooler leaking and sucking coolant in with air. This will also cause white smoke issue.

[pilou]

Oh my god, thank you so much for your video. It's been 2 days since I tried to find out why I have 2 coolant tank. Even at my BMW dealership they didn't know.

[edgarl]

I've heard about that coolant cap issue as well. I had the same low coolant error come up on my car several times after topping it off. Ended up taking the car to the dealership and they replaced the water pump. Great video though! You're like the encyclopedia for B58s!

[bonearchetype]

Thanks for posting your experience! My filler cap is leaking as evidenced by white crust around the base of the filler hole so, I’m replacing the o-rings on the cap instead of buying a new cap. I’ll update after a week or so with results 👍🏼👍🏼

[dwaynebolan]

Great video! Please make a video on what to look for when shopping for a used F30 340i.

[TheTallRaver]

Great video!
Spot on tip at the end about the coolant cap. I have the same crusty residue around the thread, which means the cal is the culprit and is leaking from there!
Thanks buddy!👍👍😉💪

[wordtruth]

Great video. Great channel for B598 engines.

[omarsiddiqi]

When my car was under warranty, the dealership did all these steps and said you have no leaks, it is normal for this engine to lose a little coolant. The nerve of these people. They should have changed the cap under warranty if all else failed. I check my coolant every so often after my initial warning and i too see a little white crust around the cap. I suspect it is my culprit and because it's cheap, I'll start with replacing the cap (based on the dealer saying no leaks exist, pretty new car still)

[michaeltran]

I had this coolant message pop up and my b58 was overheating. I put some coolant into the tank and drove it to the dealership where they said that they coolant hose snapped and not feeding coolant correctly into the engine. They replaced the hose and the issue was fixed.

[wingedhussar]

1:15 reminded my of the water puzzle from Die Hard 3.

[nalindapunchihewa]

This was very very helpful. Thank you so much for sharing.

[alexng]

holding my sides for the Die Hard clip... 😆 Thanks for the info btw, it's very helpful.

[maurecara]

Great video I had coolant being burned up and BMW diagnosed it as a faulty oil filter housing because I needed it right away they hit me for 3 k you explained what the large tank is full of of what is the small tank for and do you need to top that off also really appreciate the video thanks

[timewilltell]

Thanks for this video…much needed information.

[EHJ]

Excellent video. Thanks for the tips and information sharing.