Albie60

I have had a lot of problems with my car and this next one is the battery draining overnight, I changed the alternator and the ibs module but it still continues also most of the times I get an error code 4661 supply voltage, here in my region we don't have many professionals and they can't solve it. Please help me!

donpb

You could have a parasitic drain somewhere. See, Is My Battery Bad? - 5Series.net - Forums.

Albie60

I have checked almost everything and I wanted to know if the glow control unit can cause this battery discharge because some time ago I had a loss of coolant and the tube that had the problem was exactly above the glow control unit and a large amount of coolant fell on it

donpb

Lots of things can cause a parasitic drain. You will need to isolate the root cause.

seanjordan20

Any module can produce a drain. You need to perform a parasitic drain test to isolate what is draining the battery if there is indeed a drain.

Albie60

solved! the battery drain i think was coming from the lcm module above the brake pedal after i checked for anything suspicious there i saw a large amount of water had fallen on the lcm module which i don't know how it got there

seanjordan20

That would do it. Now you need to find the leak and plug it and get a new module then program and code it.

donpb

Does your vehicle now go to sleep?

Albie60

the vehicle went to sleep but the lights on the door buttons did not turn off

Albie60

I understand, I think the water got in through the door rubbers, they close properly and smoothly, but when I moved them by hand, they didn't have adhesive, maybe the water got in from there