Acceleration might require a rich AFR, up to 12:1, while cruising requires a leaner AFR, sometimes as low as 22:1. If you have a bad MAF sensor, the engine control module (ECM) cannot calculate fuel injection correctly, which can lead to larger issues with your vehicle. 7 Symptoms of a Bad Mass Air Flow Sensor Normal E60 system voltage for charging a battery in good health that is over 80% charged is generally 14.1-14.3 volts. For accelerated charging in cold weather the ECM may in rare instances charge AGMs as high as 14.7V and FLA as high as 15.5V as directed by the ECM/CAS based upon IBS feedback. All your listed symptoms is indicative of bad battery bad alternator.These two things are cheaper than continually guessing and replacing. You replaced the battery and didn't charge it up 100%. You need to do this and replace your alternator as it appears that it is not fully 100% functional. And it doesn't need to be dead to cause problems. The car will warn of low battery and shut everything down. BMW used to recommend that a battery maintainer be installed for most peoples driving habits. I will do that someday, at least for the E61, we don't use it as much as we do the E60. Firstly check the voltage from the battery. E39 alarm system is pretty picky about the voltage / amps that are in the battery. It doesn't need to go that low before you get the first symptoms eg. central locks do not open with remote but open with key, hence not disabling the alarm. I had a similar problem with my 540 last winter when it was You can check if your BMW has this great feature by parking your BMW but keeping the engine running. Have a friend turn the steering wheel to the left or right and watch the lights response. Causes of Automated Headlight Failure. As with almost all types of part failure, there are a variety of reasons why your BMW’s automatic headlights may fail. kBomb. 316 130 334 336 484 414 462 227 323

bmw e60 low battery symptoms