Hi thanks all you, if there are some way to lower on the setting it may be good to make a test and see what happen. but it is a good point the battery voltage because i read sometime less than 47 volt. the only setting that i can see on the service mode is 48 to 36 or 36 to 48 but i going to take a look more close on the setting, the model is 7FBCU25 toyota