Ancel BM700: What size battery does a BMW E90 use? Most US Market E90 use the 90/720 AH/CCA battery. If you have CIC or the business radio with Bluetooth, you car uses the 90/720 battery. It also will have the battery monitor terminal on the negative cable. The “810” part number is the current 90/720 BMW battery. A: The short answer is that BMW designed the charging system with an algorithm that varies the rate of charge by the age and type of the battery installed. Registering a new battery resets the algorithm back to optimal charging voltage for the specified battery. Hi i have a 2007 bmw e90 335xi manufactured 07/07 Low beam xenon went out, replaced it after 40+ startups and still does not ignite I have INPA/ toolset32 etc and I followed these instructions, but could not find anything in toolset32 about step 4, so skipped it and went straight to step 5. The battery saftey terminal (BST) is used to reduce the risk of a short circuit to the B+ terminal of the battery in the event of an accident, as a result of a short circuit on the cable running from the B+ terminal of the battery to the Starter & Alternator (an unfused/unprotected circuit). 427 posts · Joined 2011. #2 · Apr 21, 2020. You will need to code for the new battery as it is a flooded battery as opposed to AGM (different charge rates). You will then have to register it as a new battery. Sent from my iPhone using Bimmerfest. 2008 335i M/T E93. 2005 330Ci M/T E46. Reply Like. J. BMW AIRBAG LIGHT RESET, CLEAR AIR BAG LIGHT X1 X2 X3 X4 X5 X6 F10 F30 F11 F31 F32 F25 F26 E90 E60 E91 BMW PARTS: 2008 328i battery reset. When I crank my car after it's been sitting for a few hours it acts like the battery has been disconnected: the time has to be rest and the brake lamp failure/fuel supply malfunction/trailer lamp malfunction light comes on. If I drive for a while the warning goes away. MAF sensor readings. Doing the charcoal delete since its so warm out. some suggest resetting the computer to have the computer relearn w/ new MAF readings faster. If you still have your old battery - pick up a CTEK 3300 and charge it up, will take about 50 hours but it will be good as new, green 'eye' and everything. What are the symptoms of #BMW battery going bad? Learn how to spot low voltage in your car before is too late and you can still drive the car. The are some i 25gk.