2018 BMW 4 Series Engine Problems

The contact owns a 2018 BMW 430I. The contact stated while driving at an undisclosed speed, the engine started overheating with the low coolant warning light illuminated. The contact parked and left the vehicle at a local dealer. The dealer was contacted. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure and confirmed that the VIN was not included in SIB: 17 01 21 (Service Action: Replace the Coolant Vent Line on the Cylinder Head) and referred the contact to the NHTSA Hotline for assistance. The approximate failure mileage was 80,769.

The contact owns a 2018 BMW 430I. The contact stated that while the vehicle was parked, the contact discovered that there was an unknown liquid leaking underneath the vehicle. The coolant warning light was illuminated. The vehicle was taken to a dealer, where it was diagnosed that there was a leak in the water pump and that the water pump needed to be replaced. The contact researched and became aware of NHTSA Campaign Number: 24V608000 (Engine and Engine Cooling; Electrical System); however, the VIN was not included. The vehicle was not repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline to report the failure. The failure mileage was approximately 74,000.

In Oct 2022, I was driving normally and suddenly got a message on the dash saying something like "Coolant low, please top up when you have a chance". A minute or so later, I got the red warning "Engine Overheated, turn off engine when safe" and it went into limp mode, and I pulled over immediately and had to flatbed my car to a dealer. Then told me there was a coolant leak (which I was not aware and there was no error message regarding coolant prior to the incident.) And they told me there was a recall on my vehicle coolant vent line. Although I had check NHTSA website frequently and did not see anything being recalled. They replaced the coolant vent line for free. Fast forward 21 months and less than 5000 miles later, I brought the car in for oil change. Upon inspection of my vehicle, the technician noticed some fluid seeping through the turbo coolant feed line and there were buildups. Please see video here. [XXX] . They suggested replacing the turbo coolant feed line and turbo return light for $2,500! I mentioned the incident two years ago due to a coolant leak that was being recalled, if this is related. They told me the recall was only the coolant vent line. The issue now is the turbo coolant feed line and return light. And over time, the coolant just "starts to leak on those lines due to its material". This is a 6 year old mildly driven vehicle with 35K miles. How can the coolant line material so bad that it would start to leak after 5+ years? Found some threads online and there were other people having the same issue. The manufacture should have put in some quality coolant lines. There were other recall in other models (18V755) for regarding a coolant leak that may result in an engine fire, which increases the risk of a crash and injury. If the line material of my coolant feed and return line by nature will start to leak after five years, wouldn't it be the manufacture's responsibility to remedy it before it cause safety issue? INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2018 BMW 430I. The contact stated that while the dealer was servicing the vehicle, the dealer informed the contact there were several coolant leaks found. The dealer advised the contact to regularly add coolant to the vehicle. Additionally, the contact stated while driving 40-50 MPH, the vehicle experienced reduced power. Several unknown warning lights were illuminated. The messages "Vehicle Engine Heating - Drive Moderately" and "Drivetrain Malfunction" were displayed. The contact noticed a significant amount of smoke coming from underneath the hood and there was smoke inside the cabin of the vehicle. The contact pulled over to the side of the road, turned off and exited the vehicle. The vehicle failed to restart and was towed to the residence. The vehicle was then towed to a Collision Center, where it was inspected. The Collision Center informed the contact that the engine combusted and several parts under the hood had melted. The vehicle was not repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 75,000.

My BMW 430i 2018showed no warning and suddenly the car started to shake, I stopped immediately and after the car cooled, there was no coolant, the oil temperature gage was always on normal. The car overheated and caused catastrophic engine failure, and need replacement. Upon inspection by several mechanics, its obvious the coolant leak from a hose that connects with engine block

CAR WAS ON THE HIGHWAY GOING 80 MILES COOLANT LIGHT CAME ON CAR DROPPED SPEED TO 30 MILES PER HOUR ON ITS OWN

The contact owns a 2018 BMW 430I. The contact stated while driving at an undisclosed speed, the vehicle lost motive power. The vehicle was restarted; however, the failure persisted. The vehicle was driven to a local parking lot and then to the residence. The vehicle was later towed to the dealer where it was diagnosed with coolant pump failure. The contact was informed that the coolant pump needed to be replaced. The vehicle was not repaired. In addition, the contact stated that the coolant pump was previously replaced and covered under an unknown recall repair a year prior to the failure. The manufacturer was made aware of the failure but provided no assistance. The contact was advised to contact the NHTSA Hotline to report the failure. The failure mileage was unknown.

The contact owns a 2018 BMW 430I. The contact stated that while driving at an undisclosed speed, the low coolant level warning light illuminated on the instrument panel, prompting the contact to refill the coolant reservoir. However, within two weeks, the failure reoccurred. After a visual inspection of the engine compartment, the contact observed an abnormally low coolant level. The vehicle was taken to an independent mechanic, who determined that the coolant was leaking from the reservoir hose. The vehicle was not repaired. After investigating the failure, the contact related the failure to Service Action: 17-01-21. The manufacturer was notified of the failure but referred the contact to the NHTSA Hotline for assistance. The failure mileage was 57,000.

The contact owns a 2018 BMW 430I. The contact stated that while driving approximately 45 MPH, the warning message "Pull Over Vehicle Will Shut Off" was suddenly displayed and the vehicle stalled. The vehicle was towed to the local dealer who diagnosed that the coolant hose was faulty and caused damage to the water pump. The coolant hose and water pump were replaced and the failure was remedied. The manufacturer was notified of the failure but no assistance was offered. The failure mileage was 49,000.

I was driving along the road and my car without warning overheated. I was able to drive to a safe place and park and contacted BMW of Southpoint Durham, NC. I was told that there was a recall on the hose which caused the car to overheat. I was told that they are waiting for BMW to issue the corrected/replacement hose for the car and in the meantime they would put a temporary hose on the car. I was told to pay out of pocket and then be reimbursed when the correct hose is issued by BMW. Many others had this same issue. BMW of Southpoint received the correct hose 2023 and put it on my car but now BMW is saying there was no recall. My safety and others were at risk because the engine could have caught fire, it could've caused me to lose control and crash. I had to sit on the side of the road for hours and could've been hit by another vehicle. Vehicle was inspected by BMW of Southpoint. There were no warning signs. lamps or messages prior to the car overheating. This happened February/March of 2022. Since then I was told letters had been sent out for a service update.

The contact owns a 2018 BMW 430i. The contact stated while attempting to start the vehicle, the low coolant/add coolant warning light illuminated. The contact stated she saw a coolant leak underneath the engine. The vehicle was not drivable. The contact towed the vehicle to an independent mechanic and was informed that the water pump needed to be replaced. The vehicle was repaired but experienced the failure a second time. The vehicle was not drivable. The contact towed the vehicle back to the independent mechanic and was informed that the water pump needed to be replaced a second time. The vehicle was being repaired at the time of the call. A dealer was not contacted. The manufacturer had been informed of the failure. The failure mileage was approximately 54,348. The contact stated that the part was replaced by a private mechanic.

TL* THE CONTACT OWNS A 2018 BMW 430I. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 40 MPH, THE COOLANT WARNING LIGHT ILLUMINATED. THE VEHICLE WAS TAKEN TO ORANGE COUNTY BMW (101 MAHER LN, HARRIMAN, NY 10926, (845) 782-4269) TO BE DIAGNOSED. THE CONTACT WAS INFORMED THAT THE ENGINE NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 78,000.

TL* THE CONTACT OWNS A 2018 BMW 430I. THE CONTACT STATED THAT THE VEHICLE WAS AT STAND STILL, WHEN SHE WAS INFORMED THAT UNDER HER VEHICLE HAD CAUGHT FIRE. THE CONTACT STATED A COUPLE OF BY STANDERS ASSISTED HER TO TRY TO EXTINGUISHED THE FIRE BUT THE VEHICLE CONTINUED TO CATCH ON FIRE. THE FIRE DEPARTMENT WAS CALLED AND WAS ABLE TO EXTINGUISHED THE FLAMES. A FIRE REPORT WAS FILED. THE CONTACT STATED NO ONE WAS INJURED OR SEEKED MEDICATION ATTENTION. THE VEHICLE WAS NOT DRIVABLE. THE VEHICLE WAS TOWED TO LOCAL DEALER BMW OF BAKERSFIELD LOCATED AT 5400 GASOLINE ALLEY DR, BAKERSFIELD, CA 93313, (661) 396-4040 AND WAS BEING DIAGNOSED AT THE MOMENT. THE VEHICLE HAD NOT BEEN REPAIRED AS OF YET. THE MANUFACTURER HAD BEEN INFORMED OF FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 13,200.