Why is my Honda Bluetooth module draining my battery?

It has been unplugged for quite a while now, because it has started to drain my battery quite badly. I haven’t measured it yet, but this seems to be a pretty common problem with this module after around 6-8 years. Mine failed after about 9-10 years, but still failed.

Why does my HFL battery drain after 10 min?

The unit is supposed to shut off after 10 min but fails. Then if you do not put a trickle charger on the battery your battery will degrade and finally fail. The reason for the HFL cooking is without a trickle charger the HFL unit will work overtime to draw from the battery and eventually cook itself.

When to disconnect HFL battery from Acura battery?

There is a simpler way, there are two hot wires once the ignition is on into the HFL unit. There is a white wire that stays hot and the unit is supposed to shut down in 10 min after the ignition is off, but the unit does not shot down. There is an ignition connected wire as well, nothing needs to be done to this one.

What happens when you disconnect the HFL unit?

The relay will shut off thus the unit will not draw 1.42 amps from the battery. Do this even if you put in a new HFL unit since the HFL unit will cook if it stays on. To prevent cooking you can put on a trickle charger all the time the vehicle is in the garage.

The unit is supposed to shut off after 10 min but fails. Then if you do not put a trickle charger on the battery your battery will degrade and finally fail. The reason for the HFL cooking is without a trickle charger the HFL unit will work overtime to draw from the battery and eventually cook itself.

It has been unplugged for quite a while now, because it has started to drain my battery quite badly. I haven’t measured it yet, but this seems to be a pretty common problem with this module after around 6-8 years. Mine failed after about 9-10 years, but still failed.

There is a simpler way, there are two hot wires once the ignition is on into the HFL unit. There is a white wire that stays hot and the unit is supposed to shut down in 10 min after the ignition is off, but the unit does not shot down. There is an ignition connected wire as well, nothing needs to be done to this one.

The relay will shut off thus the unit will not draw 1.42 amps from the battery. Do this even if you put in a new HFL unit since the HFL unit will cook if it stays on. To prevent cooking you can put on a trickle charger all the time the vehicle is in the garage.