2018 BMW X3 Electrical System Problems

This problem has occurred to me now twice. Both occurrences were on very cold days where the temperature was below 20 degrees F. The car starts promptly and runs, but the entire dashboard electronic instrument cluster is non-functioning and dark . In this condition, you cannot tell your speed, engine rpm, fuel level, engine temperature, or any mileage numbers. The turn signals also do not work. The headlights and the iDrive screen and the climate control were all lit properly and functioned. I did not think to check the brake or tailights, unfortunately. Multiple restarts of the car had no effect, and so I drove home without the dash functions. After the car sat overnight in my garage (which is somewhat warmer) the dash lights returned to their proper function.

Drivers left front daytime running lights failed after <4 years from warranty replacement. 3rd set of lights in under 7 years on this vehicle.

When the temperature is cold, the instrument cluster won’t turn on.

headlights flash due to possible faulty switch. very bad safely problem that affects other cars

Digital dashboard which show speed, RPM, fuel, temp and other important information randomly goes blank while driving. It will come back on by itself or after restarting the car. This has happened many times.

The sos antenna in our x3 had a leak around the seal due to a poor design. Over time the tcb got corroded and caused an sos system malfunction. I have researched other cases in which a malfunction had not popped up, but still replicated the same issues as with the warning. Part of the module is the automatic sos help, if one were to get into an accident and rely on this system not realizing it was faulty, it could result in much slower response times if said person were unable to access a phone able to call proper emergency response teams.

2018 BMW X3 M40i - after the car was washed in a car wash, the tailgate started opening and closing on its own. Would open all the way up, wait a few seconds then close all the way down and lock itself. It happened about 20 times until it stopped on its own. This started immediately after the car was parked in the garage. Did not happen while driving. The button on the remote control was not pressed at all. The tailgate would beep and flash the taillights when opening and closing.

My 2018 BMW X3 xdrive30i G01 series has been experiencing persistent overheating issues, even in cold temperatures as low as 40 degrees. The coolant reservoir boils vigorously while driving, but the temperature gauge does not indicate overheating, and no warning lights appear. The only alert displayed is a low coolant warning instructing to refill coolant or to top off. Recently, I noticed coolant and other fluids leaking from underneath the vehicle, along with a strong burning smell coming from the engine. Adding BMW brand antifreeze/coolant did not resolve the issue. Despite these ongoing issues, the authorized BMW dealership has refused to inspect the cooling system further because no fault codes appear. Independent repair shops have also been unable to diagnose the root cause. This presents a serious safety risk. The vehicle is overheating without warning, which could result in sudden engine failure while driving. The boiling coolant, burning smell, and fluid leaks also raise concerns about a potential fire hazard. This vehicle is now undrivable and unsafe. I urge NHTSA to immediately investigate potential cooling system and sensor defects in this model.

The sunroof drains of the vehicle become easily clogged. When this happens, water drains into the battery compartment and interior of the vehicle. Although BMW is aware of this, and the attendant danger of having water pooling in the battery compartment, they have not addressed the issue. There are no warning lamps, messages or other symptoms prior to the problem.

The trunk on the vehicle can be opened while on the freeway. If you bump the trunk open switch or key fob button the trunk will open even when the car is in motion leading to personal belongings being thrown all over the road. This is a massive issue that should have been caught and fixed immediately.

Front headlights were replaced under warranty after daytime running lights both stopped working in Oct. 2021. Similar problem now on 9/4/25 approximately 4 years later, and BMW is leaving me to foot the bill on a barely 7 year old vehicle, forcing me to have 3 sets of lights on a car that is 7 years old.

WHILE DRIVING AT 60 MPH THE ELECTRONIC DASHBOARD COMPLETELY SHUT OFF. IT RESTARTED ITSELF AFTER SOME 30 SECONDS. WHEN IT REAPPEARS IT DOES NOT SHOW CORRECT SPEED, IT STARTS AT 0 AND WORKS ITS WAY UP TO THE CORRECT SPEED. I HAVE BEEN UNABLE TO GET A PICTURE OF THE DASHBOARD AS IT HAS HAPPENED WHILE DRIVING AT SPEEDS THIS CAR HAD PREVIOUS DASHBOARD PROBLEMS WITH THE DASH SLIDING TO THE LEFT. THIS WAS BROUGHT TO THE DEALER FOR CORRECTION. THIS IS DIFFERENT. IT IS A MOMENTARY COMPLETE DASH FAILURE.

DIGITAL IMAGE OF SPEEDOMETER AND TACHOMETER NEEDLES SHIFTED TO THE LEFT MAKING IT IMPOSSIBLE TO ACCURATELY READ THE SPEED OF THE VEHICLE. CONSISTENT WHEN VEHICLE STATIONARY OR IN MOTION; NEEDLE POSITION WOULD CHANGE WHILE IN MOTION AND CHANGING SPEEDS BUT MAJORITY OF "NEEDLE" NOT VISIBLE. DID NOT RESET AFTER RESTARTING THE VEHICLE SEVERAL TIMES. DID RESET AFTER A FEW DAYS.

AS I WAS MAKING A 10 MINUTE DRIVE, ON A HIGHWAY ABOUT 30 MINUTES BEFORE DARK, IT JUST STARTED TO SNOW. SUDDENLY ALL OF THE FRONT SENSORS STARTED TO FLASH "TROUBLE" ON THE DASH. I CHECKED THE FRONT OF THE CAR AND ICE HAD FORMED OVER THE SENSORS AND HEADLIGHTS. THAT RENDERED THE CAR UNSAFE TO DRIVE IN THE DARK SINCE THE HEADLIGHTS COULD NOT SHINE THROUGH THE ICE. AS FOR THE DISTANCE SENSORS, I GUESS THAT IS A DESIGH FLAW AS A FUNCTION OF HOW SNOW PASSES OVER THE SENSORS. I BELIEVE THAT THE LED HEADLIGHTS DO NOT GENERATE ENOUGH HEAT TO PREVENT ICE FROM FORMING ON THE LENS OF THE HEADLIGHTS.

TL* THE CONTACT OWNS A 2018 BMW X3. THE CONTACT STATED THAT THE SPEEDOMETER DISPLAYED THE INCORRECT SPEED. THE DEALER (GAULT AUTO SPORT BMW, 2311 NORTH ST, ENDICOTT, NY 13760, (607) 748-9875) INFORMED THE CONTACT THAT THERE WAS NO REMEDY FOR THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 5,900.

TL* THE CONTACT OWNS A 2018 BMW X3. WHILE REVERSING THE VEHICLE, THE REARVIEW CAMERA SPONTANEOUSLY BLACKED OUT INTERMITTENTLY. THE FAILURE RECURRED FOUR TIMES. THE VEHICLE WAS TAKEN TO ADVANTAGE BMW CLEAR LAKE (400 GULF FWY S, LEAGUE CITY, TX 77573, (281) 557-7000) WHERE THEY INFORMED THE CONTACT THAT THE SOFTWARE WAS UPDATED. THE VEHICLE WAS REPAIRED; HOWEVER, THE FAILURE PERSISTED. THE VEHICLE WAS TAKEN BACK TO THE SAME DEALER WHERE IT WAS DIAGNOSED THAT THE CAMERA NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED; HOWEVER, THE FAILURE RECURRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 20,600.