BMW E90 E92 Steering Click Clunk Noise: Actually An Easy FIXBecome a member and get exclusive discounts at Pull the multi-meter to test Voltage and battery was fine @ 12.9XV. Let the car sit and test periodically throughout the night and Battery never ones showed under 12.5V. This morning before I started the car, I tested voltage at the Battery terminals and got 12.92V. I had the car into Union Park BMW in Wilmington DE on 5/20 to perform the recall associated with the Power Supply System/Battery Positive Cable Kit/Power Distribution Box Inspection. When I got the car back, the trunk would not open. The dealership diagnosed the problem as a bad JBE (Junction Box Electronic) module. Snik. low battery gives difficult start up, and sometimes dashboard errors. If you killed the battery dont use the power seats and that bs if you expect to charge it, AC on and just drive, hopefully at daytime without headlights so you get maximum charging.. drive the car at hwy speeds for a good 30 minutes, to fully charge battery. These rarely fail on the E46, but it's a possibility. No start due to no, or low fuel pressure can be caused by a defective fuel pressure regulator. 3. Starter. If battery voltage is sufficient at the starter's electrical connections and the starter is not cranking, it is most likely defective. The car needs to have a good ground to charge the battery. Again, a dead car battery isn’t just due to the ground strap. It could legitimately be time to replace it or you may have a failing alternator. For this reason, it’s important to perform a complete diagnosis before replacing anything. 4. Low Battery Voltage Typically this malfunction occurs because you started the car, and then walked out of range of the sensor with the key fob. If that happened this procedure might re-enable your Comfort Access in the door handles: 1. Insert metal, mechanical key into door lock to manually lock and then unlock. 2. It’s one of the most noticeable symptoms of Engine Malfunction and Reduced Power. 3. Poor Engine Performance. When the Engine Malfunction Reduced Power warning appears, the engine’s performance is typically affected. Your BMW may run roughly or unevenly, and you may notice a lack of power or poor acceleration. 4. Misfiring GyEqn.