![]() ![]() Do not let the key in the ignition while the battery is charging.Īnother charging option is to disconnect the battery from the car, take it to a charging station (battery charger) in your garrage or your house and wait for it to fully charge. ![]() A dead battery can take up to 24 hours to fully charge. ![]() Connect your charger now, red clamp first and proceed to slow charging the battery. How do I charge my BMW battery?īMW recommends that the battery is charged via the jump start terminals under the hood. Until you recharge the battery, there is no test you can perform. Just try the quick and easy steps below before purchasing expensive replacements. If that doesn’t work out well, they might sell you a new alternator and possibly other electronic modules.īottom line: it may be quicker and way less expensive to troubleshoot the dead battery yourself first. Unless your car is still under warranty, raising the dead battery issue with the dealer, from what most BMW owners report on plenty on forums, will likely lead to your being sold a new battery. And if you have aftermarket devices installed on your car (like a DVD player, for example), do not rush to the dealer either: they will most likely blame the dead battery on your aftermarket gear and make you strip your car off of those before coming back for a re-check. Here’s a guide for troubleshooting dead batteries on a BMW.ĭon’t rush out to buy a new battery just yet. You’re wondering where to start looking for answers. And now you wonder if water got somewhere it shouldn’t have. The night before you went through one of those touchless car washes with the undercarriage spray. No lights, iDrive, starter function, just dead battery on your beloved BMW. All seemed to be working well until one morning when you found your car completely dead. You’re driving a BMW which has a reasonably old battery, like 2 years of age. ![]()
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