2020 BMW 330I: engine overheating

Filed Jun 11, 2026 · Electrical · 110,897 miles · CA

The contact owns a 2020 BMW 330i. The contact stated that upon starting the vehicle, the starter made an abnormal, grinding metal-like sound. The vehicle was taken to the dealer, who diagnosed that the starter had failed. The starter was replaced under the federal safety agency Campaign Number: 26V056000 (Electrical System); however, the vehicle failed to start one morning post-repair. The message "Engine Cannot Start" was displayed. The vehicle was towed back to the dealer, where it was diagnosed that the starter failure had caused damage to the battery. The dealer informed the contact that the battery needed to be replaced prior to the starter replacement. Additionally, the contact was informed that the transmission harness, signal wire, and ending harness had overheated and needed to be replaced. The manufacturer was made aware of the failures, and a case was opened. The failure mileage was approximately 110,897.

Filed Mar 5, 2026 · Engine · VA

The Active Grille Shutter (AGS) system on my vehicle suffered an internal mechanical failure (fault codes 138206 and 138224). These shutters are a critical part of the engine cooling system. Failure of the AGS to operate correctly leads to immediate engine overheating risks, potential sudden loss of power (Limp Mode) in high-speed traffic, and thermal damage to engine components, posing a severe safety hazard. The manufacturer, BMW of North America, has officially acknowledged this defect via Extended Warranty SIB 01 03 25. However, both the local dealer (BMW of Sterling) and BMW of North America corporate office have formally refused to honor this safety-related warranty repair. Despite clear video and photographic evidence showing zero external impact to the vehicle's front end or grilles, both parties claim 'outside influence' without providing any technical proof or documentation of such impact. By refusing to repair a known cooling system defect, the manufacturer and the dealer are forcing a vehicle with a high risk of overheating back onto public roads. This represents a systemic failure to address a safety-critical component under a federally protected warranty

Filed Dec 15, 2025 · Driver assistance, Electrical · KS

I own [XXX] BMW vehicle affected by a safety recall for a defective engine starter relay that may corrode, overheat, and cause a fire. The recall notice dated November 2025 states the vehicle is not safe to drive, with no remedy available, rendering it unusable and hazardous. Recall N0.25V‑636. Under Kansas Lemon Law (K.S.A. 50-645 et seq.), I am entitled to a refund or replacement for this substantial defect impairing use, value, and safety, which BMW cannot repair. I demanded a full buyback at original purchase price, including fees, taxes, and incidental costs, or a comparable replacement. I requested a response within 10 business days. I sent this demand in November 2025 and have heard nothing since. The statute of limitations for lemon law claims in Kansas is four years from defect discovery, per UCC provisions for warranty breaches. If unresolved, I want to pursue legal action for breach of warranty, lemon law violations, and negligence, seeking damages, fees, and costs. Please investigate BMW's handling of this recall and failure to respond. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jul 7, 2025 · Engine · GA

The Oil filter housing on my BMW 330i failed randomly while driving causing my vehicle to be depleted off coolant within seconds. If you want to inspect the part you will have to reach out to bmw of Columbus for documentation and I can provide the service records for repair. This caused my vehicle to have to be brought to an immediate halt to not cause overheating or engine destroying failure at a time where service/repair isn’t available. There were no warning lights or leaks prior to the vehicle malfunctioning all at once. I ubered to get coolant and once filling the reservoir the coolant immediately leaked out resulting in me needing a tow to the dealership. This problem has been reproduced with many dealers as there’s numerous of report of this online and I believe the dealer has inspected this part but is refusing to replace or recall this part under any type of program or create any type of solution to make this not happen again. There wasn’t any small leaks or warning lights shown before this issue spawned all at once then showing the low coolant light.

Filed May 29, 2025 · Engine · 156,894 miles · GA

The contact owns a 2020 BMW 330I. The contact stated while his wife was pulling into the yard, the engine overheated and the vehicle stalled. The contact stated that the message "Engine Compartment Overheating" was displayed. The vehicle was towed to Billy's Imports Service, where the spark plug wires, the engine oil filter, the PCV system, the hoses, the injectors, the O-rings, and the valve cover gasket were replaced. The vehicle was repaired. The dealer was not notified of the failure. The contact later received notification of BMW Campaign Number: 15Y150M, which the contact related to the failure. The manufacturer was contacted for reimbursement; however, the contact was advised that no assistance could be provided because the vehicle had exceeded the 150,000-mile limitation. The failure mileage was 156,894.

Filed Jan 28, 2025 · Engine · CA

Engine coolant leaking and took it to BMW dealer. Was advised that the issue was a oil filter housing gasket, heating control module and hose. Was advised by the Dealer that it was a common issue and happens all the time

Filed Mar 6, 2024 · NC

The lower active grill on my 2020 BMW 330i failed. I purchased the vehicle on January 24th. On February 27th, the check engine light came on. I called the dealership I bought it from. They told me they did not have the necessary technology to diagnose, so I took it to a BMW mechanic. The mechanic told me it is a known warranty issue with this particular BMW, and that BMW should fix it for free under the limited warranty bulletin. When I tried to contact BMW about this issue, they refused to pay for it stating that my specific VIN number was not affected by this issue, and therefore they wouldn't pay for it. This makes no sense seeing as it is a clearly known issue with an active bulletin out for the same exact year make and model as my vehicle. The production clearly did not change enough to fix the issue, so my vehicle should be included in the limited warranty/recall. The flaps can get stuck closed, which can cause the car to overheat quickly, which can be extremely unsafe. BMW refused to even look at the vehicle to see if the issue was in fact the warranty issue without me paying a $250 diagnostic fee, when I had just paid to have it diagnosed at a different BMW mechanic.