2017 BMW 430I: engine overheating

Filed Aug 25, 2025 · Engine · 123,000 miles · CA

The contact owns a 2017 BMW 430I. The contact stated that while driving at an undisclosed speed, the temperature gauge indicated that the engine was overheating, prompting the contact to discontinue driving the vehicle. After a visual inspection of the engine compartment, the contact observed that the coolant reservoir was empty, even though it had been refilled two weeks prior. The low coolant warning light was illuminated. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the federal safety agency Hotline for assistance. The failure mileage was 123,000.

Filed Apr 23, 2025 · Engine · 150,000 miles · GA

The contact owns a 2017 BMW 430i. The contact stated that while operating the vehicle, the message "Coolant Leak, Refill Coolant" was displayed. The vehicle was taken to the local dealer who diagnosed that the thermostat, oil filter housing, upper radiator hose, front engine block plug, water pump, turbo coolant line, and gasket were faulty and needed to be replaced. The contact stated that the oil filter housing and gasket were previously replaced. The vehicle was not yet repaired. The manufacturer was contacted but no assistance was offered. The failure mileage was 150,000.

Filed Aug 21, 2024 · MA

Electric Water Pump and connector broken. Vehicle overheating and causes a fire risk to driver and others. Problem has been confirmed by dealer as well as multiple independent service centers. Have not contacted insurance company but will do so, if advised. Only warning was low coolant light on the dashboard.

Filed Aug 20, 2024 · Electrical, Engine · 73,000 miles · NY

The contact owns a 2017 BMW 430I. The contact stated that while operating the vehicle, coolant leaks were present coming from the engine compartment. The vehicle was towed to the local dealer who diagnosed that the water pump and the oil filter housing gasket were faulty and needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure, but no assistance was offered. The contact was informed that the VIN was not included in the federal safety agency Campaign Number: 24V608000 (Engine and Engine Cooling, Electrical System). The contact stated that the vehicle had experienced the failure listed in the recall. The failure mileage was 73,000.

Filed Jan 10, 2024 · Engine · CA

Consisent failure of coolant line system. First noticed warning light "low coolant" and immediate overheating in November of 2021. Had the issue repaired at mechanic in 11/2021. Then same exact issue recurred in April of 2023, starting with warning light of "low coolant." Received letter from BMW USA indicating the problem can be repaired at any authorized dealership, but that this was NOT a recall. Took my car to authorized BMW dealership and got the same problem repaired. Just had the same exact thing happen again, same warning light, and took back to same authorized dealership to check the repair and was told multiple issues with the coolant line and had to pay $1900 for the repair. I am being told by several mechanics that this a design defect/flaw in these models of 4-series BMWs from 2015-2019 years. I am being warned that this issue will likely recur in the next 6-8 months.

Filed Jul 25, 2023 · Engine · GA

Oil filter housing and coolant leak from same housing. While driving, safety warning light came on and car began to overheat. Per several mechanics, this is a known issue with BMW Series 4 from redesign in car after 2017. Redesign implemented plastic housing which cracks and leaks. Same issue also listed as problem when researching on internet (hundreds of listings). Housing and seal cost $574 in parts but labor cost $2199.40 due to location of repair. My car had 55,000 miles on it and is housed in a garage.

Filed Jan 13, 2023 · Engine, Fuel system · CA

I have a BMW 430i Gran Coupe, there was a system coolant leak and now they are saying the entire system needs to be replaced because the plastic cracked and eroded from wear and tear. I began checking and found that over 1 million BMW vehicles were recalled for coolant system problems. My car seems it wasn't covered under the recall. I found a service bulletin which stated that certain BMW repairs were necessary to replace coolant line. 2 Service Bulletins - SI B01 29 16 and SIB 17 01 21. I believe my car was covered under the recall that affected EGR module, the issue I am having now could also have been affected by this recall. I see many people online complaining of the coolant leak issue. I had to wait until I got paid to fix it. They are telling me it will cost about $5,000 to repair. Please help.

Filed Oct 8, 2020 · Engine, Transmission · 80,000 miles · NC

Tl* the contact owns a 2017 bmw 430i. The contact stated that while driving, the check engine warning light remained illuminated. The contact stated that the vehicle would overheat. The contact also stated that the transmission skipped gears while driving. The vehicle was taken to hendrick bmw (6950 e independence blvd, charlotte, nc 28227) but was not yet diagnosed nor repaired. The contact stated that the failure started almost immediately after the vehicle was purchased. The vehicle was taken back to the same dealer where the air thermostat and coolant pump were replaced however, the failure recurred. The vehicle was taken back to the same dealer a second time but was not diagnosed nor repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 80,000.