Posts Tagged: parasitic battery drain
Parasitic battery drain
What is Parasitic battery drain All modern computerized vehicles draw a certain amount of power from the battery at all times. The power is needed to maintain the computer module’s memory and to stay “awake” to receive signals from the owner’s remote keyless entry key fob. However, if all the computer modules used full power all the time, the car battery would be dead within hours after shutting off the vehicle. So engineers program software to force the modules to go into “sleep” low power mode shortly after you shut … Read More
How to perform a parasitic battery drain test
Parasitic battery drain test— How to There are two ways to test for Parasitic battery drain test Parasitic battery drain test method #1 Current draw testing for parasitic battery drain In a current draw test you watch for a drop in current as you remove each fuse from the fuse box. If you pull a fuse and notice the current drop to less than 50-miliamps, you’ve identified the circuit with the problem. You can then examine which components on that circuit are the culprits. You can use a multimeter to … Read More