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bmw battery draw
bmw battery draw
hello. I have 2003 bmw x5 with a parasitic draw that drains the battery overnight. I have checked all the common issues with this car that would be causing the battery to drain. I even have all the fuses out, yes, all of them! and it still has a draw on the battery. what am I missing?
Re: bmw battery draw
You’re missing a thermal camera or a hot alternator.
Re: bmw battery draw
What is the value of the discharge current ?
Disconnect the IBS connector
Disconnect the Alternator connector
Disconnect the IBS connector
Disconnect the Alternator connector
Last edited by kona on Wed Sep 12, 2018 8:01 pm, edited 1 time in total.
Re: bmw battery draw
Hello,
For X5 empty battery I will disconnect radio unit +amplifier (sometimes stop lamp isolations isn't good and this units sit in the water),also I will check/disconnect climatronic and the power unit for blower.
Also I will check if the doors switches operate open/close with a diag tool.
For X5 empty battery I will disconnect radio unit +amplifier (sometimes stop lamp isolations isn't good and this units sit in the water),also I will check/disconnect climatronic and the power unit for blower.
Also I will check if the doors switches operate open/close with a diag tool.
Re: bmw battery draw
I was thinking alternator too, ill disconnect that and get back to you. thanks guys.
Re: bmw battery draw
so the alternator is buried in this thing so I pulled the cable from the firewall where it comes up from the alternator, no change, still pulling 12 volts!
Re: bmw battery draw
Pulling 12V? Are you talking amps?
Re: bmw battery draw
ok, so I had the wrong test meter on there, now that I have correct multimeter on the 10 amp setting im getting a zero reading, even while the car is awake, door open, key on nothing changes it from the zero reading. ive had many people involved, watched every video on you tube, everything I know tells me I should have a reading on my meter.
Re: bmw battery draw
I guess you connected in parallel and blew tester fuse. If you are connected in series then it's impossible to get no reading
You would benefit from basic electical skills training. Like many others here in forum. Watching youtube is not the same as learning in class.
You would benefit from basic electical skills training. Like many others here in forum. Watching youtube is not the same as learning in class.
Re: bmw battery draw
someone else was trying to figure it out before I got in this morning so that's probably the case. thanks. I have basic skills btw, this isn't my first rodeo but im certainly not a bmw tech so this is kind of baffling with all the different systems this thing has.