On my ML350 2012, I noticed Before starting- UB: 12V, IB:204V , after starting- UB 14.5V, IB:204V . Is this normal for my battery?
There appears to be a problem with the intelligent battery sensor or the wiring for the sensor. I would start by checking the wiring for the sensor.
The intelligent battery sensor is usually a grey square box on the negative battery terminal.
The amperage reading for the sensor is pegged out at it's maximum value of 204 amps. This can be caused by wiring issues such as short to ground or open circuit. The sensor itself could also be faulty.
@oskool thanks
Are you having car troubles? If so please describe the symptoms you have, and provide some background info and troubleshooting you tried. Thanks.
If I car is sitting overnight, and you check it in the morning, it should be around 12.3V or higher.
When you are cranking the car, it should drop no lower than 9.6V and then quickly jump to more than 13V+ when the car is running.
@kaizen thanks for your response. My issue is the IB: 204A constant before and after starting.
From my findings, it ought to have a negative value before cranking and not above 100A after starting.