#Bmw coolant low how to#

Topping off your coolant is one thing, but checking out leaks or larger issues is a whole new ballgame for the average BMW owner.

#Bmw coolant low how to#

Very few people know how to safely fix these problems on their own. Most of these issues will have to be fixed by a trained mechanic. There are several other reasons this may happen that are unrelated to the amount of coolant in your BMW: While this is true for the majority of instances, it isn’t always the case. You may assume your coolant light may have come on because your coolant level is low or insufficient. If your level is seriously low, this is likely the cause of your light’s illumination.Ĭommon Causes of Coolant Light Illumination Most engines will take at least 30 minutes to cool down. Be sure to wait until your vehicle has cooled to avoid potential burn hazards when you remove the radiator cap. After your engine has cooled down, check your coolant level.It is also a safety concern if you continue to drive with your low coolant. This can prevent further damage in the event an underlying issue could cause a larger, more serious problem. Yet, there are a few things you can immediately do to give your mechanic more information about the issue you are experiencing. It’s best to leave this to the professionals. Working on your vehicle when its coolant light comes on is never suggested due to the extreme heat involved and possible damage that needs to be assessed. Troubleshooting When Your BMW’s Coolant Light Comes On It may be a quick fix to replenish your coolant or expert help may be needed to help fix your BMW. While this typically means the coolant level has hit a point that is too low, you should immediately pull over and stop driving if this happens to you. Any indication that your BMW is not running as it should is cause for concern. Curious as well as to where the coolant fluid has been disappearing to.When your BMW’s coolant light comes on, it can give you a startle. Im not aware of any leaks, engine hasn't ran hot by any means. Once last year at this time and this year today actually. I have a 15' 320 xi (95k) and have had to add coolant twice. Ĭan someone with this exact same problem post a copy of the repair invoice (minus PII)? Or - PM me? I asked BMW NA to escalate and pay for turbocharger removal and inspection to see if coolant has been leaking through the bearing. So low coolant warning may appear later than expected. This problem was noted before the warranty expired so I was assured that future repairs will be covered.Īgain - both warm and cold pressure tests revealed no leaks. The service technician put tamper proof seals under both large and small reservoir caps and asked to return when coolant warning appears again. The dealer just advised me that the field engineer hasn't heard / could not find any instance of a problem where coolant loss was due to turbocharger leaking coolant through the bearing.Ĭan someone with this exact same problem post a copy of the repair invoice (minus PII)? I would ask the dealer to specifically investigate this issue. The coolant leaking through the turbo bearing (and evaporating) has been reported in the past. The reservoir cap on my 2017 440i GC was replaced. If present, the main tank reservoir cap needs to be replaced. When the car is cold, remove the main tank reservoir cap and look for white residue. I suspect that one of the possibilities is coolant leaking through the reservoir cap or - more complex - through a faulty turbo bearing. I rolled my eyes as my 435 and 535 engines were turbos.Īnyone out there know if this is something to ignore or something to get shop to investigate further on? If ignore, I'm happy to keep topping off, just want some peace of mine. I asked the dealer service center about it and they said that was common for turbo engines. I have not noticed any liquids in the garage, albeit, this might be such a small leak that it burns off unnoticeably. Given my previous 435, 535 and 645 never had coolant warnings between services, it got me wondering if there is something either unique about the engine in the 440xi where coolant leaks out super slow as designed or if I have a defect somewhere.

I've got a 2018 440xi with M-tune with 29k miles and about every 4-6 months, I am getting a coolant low warning.