For example, around 13.5 to 15 volts should be supplied to the battery when the engine is on. However, that number drops to at least 12.4 volts in the system with the engine turned off.
With ignition off if you have a lights or radio on after 2 min warning goes on "recharge battery" "battery is heavy discharged." I checked battery with load test- ok, check voltage on dash before starting engine and while cranking engine- never goes below 12V, maybe once went to 11.9V.
X5 Battery Drain issue (I'm running out of ideas) SHORT VERSION: I replaced my alternator and the battery died while I was driving. The battery shows that it is charging whenever I test it at home with the car on. The battery voltage changes when the positive battery cable on the distribution box is moved around.
The vehicle’s electrical system relies on a 12-volt battery to power the lights, radio, and other electrical components. If the 12-volt battery is failing or not charging properly, it can cause a drop in voltage, triggering the warning message. Here are some potential causes of low voltage and how to fix them: Failing 12-volt battery
1. Fuel gauge behaves erratically. One of the first symptoms of a problem with the fuel gauge sender is a fuel gauge that behaves erratically. A faulty fuel gauge sender may cause the gauge to suddenly change positions, or give an inaccurate reading. The gauge may appear to be at three quarters, and then only a few minutes later will change to
Some symptoms of a bad ECM include an illuminated check engine light, no start condition, poor engine performance, and an ECM that refuses to run emissions monitors. Usually, only a part of the ECM becomes compromised. If the damaged circuit doesn’t affect how the vehicle runs, you might be able to continue to drive temporarily.
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