In this video I show you how to replace the voltage regulator on your BMW. This process is going to be very similar for a number of models. I'm working on 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. i see you have not had your battery die, warning icons come up on the dash in the form of a battery advising battery is low. I had this happen for a few weeks before I had mine changed. my car is an 07, OP 4-5 years might be the average lifespan. another point, I had to have mine upgraded and coded in properly. The car is a 2010 E90 335d. After not driving it for a few days, I got in and tried to start it and it cranked really slow. It was obvious the battery was low, so I charged it overnight. At the same time, there was a light indicating the SOS system was disabled, the iDrive screen was blank, and there were no chimes of any sort. Concerning my battery age, i don't really know, i bought the car used almost 3 years ago and never replaced the battery, so i have no idea, it's the 80AH 800A BMW AGM. I measured the voltage of my battery (resting in the basement, just 100% charged, unplugged, measured at 12.65V yesterday afternoon) this morning, and it's displaying 12.50V There are several possible causes. 1) Too many short trips. 2) Charging system is inadequate or has failed. 3) There is a parasitic load discharging the battery when engine is not running. 4) You have accessories connected directly to the battery, defeating BMW's energy management system. 5) You have a bad battery. If no "Low Battery Voltage" warning appears within about 90 seconds, you should be OK. If it does appear, then the problem could be the battery or, perhaps, the IBS. After running and then parking the car, you might try keeping the ignition ("radio readiness" in BMWspeak) on - with or without the radio audio enabled. Drive moderately. - DBC malfunction! Drive carefully. - Start-off assistance inactive! - Dynamic damping control malfunction! These all appeared at the same time and the car behaved oddly for a short time. The yellow DSC light flashed as if DSC was correcting wheel spin and the brake pedal became weak. After about a minute the DSC stopped E7GGq.

bmw e90 low battery symptoms