Troubleshoot & DIY. The BMW Footwell module (FRM) functions as a node. The FRM receives signals from a multitude of sensors. It controls mirrors, windows and lights. When the FRM malfunctions, the symptoms are quite disturbing for your driving experience. Read through if you want to know what the FRM does and how it interconnects. A fuel pump in a modern fuel-injected car should not be audible at all; electric fuel pumps live inside the fuel tank, where they are surrounded by fuel, the fuel tank shell, vibration-damping regualates that voltage of the battery. The battery does indeed need to. be replaced. Then we need to do a draw test to make sure nothing else is. draining the battery. The battery sensor needs to be replaced. or the new battery you have will go dead. The replacement of the IBS is. $585.91. Usually, bad or failing differential oil will produce any of the following 4 symptoms that can alert the driver of a potential problem that should be serviced. 1. Vehicle Exceeds Gear Oil Service Interval. All vehicles come with a maintenance schedule for its fluids and filters based on mileage. If the vehicle has exceeded the recommended 1. Fuel gauge behaves erratically. One of the first symptoms of a problem with the fuel gauge sender is a fuel gauge that behaves erratically. A faulty fuel gauge sender may cause the gauge to suddenly change positions, or give an inaccurate reading. The gauge may appear to be at three quarters, and then only a few minutes later will change to Welcome to I.E. Euros. Hi, I am Francisco. We are a group of vehicle enthusiasts looking for Car meets, car shows, drag racing, roll racing, New cars, etc,.l I think low battery power is the culprit. 2019 BMW X5 xDrive40i, arctic grey metallic 2021 BMW X3 M40i, carbon black metallic. Save Share. Reply Quote. B. billbmw. Find the location of the MAF sensor in your X5, unplug the electrical connectors, and remove the sensor from the housing. Spray at least 10 spurts of MAF cleaner onto the sensor and then let it air dry for an hour or until completely dry. Do not use cloth or cotton swabs to clean the sensor, as it can damage it. OvQs6jq.