I think I found my parasitic electrical drain!!!!
01-13-17, 03:53 AM
#1
Lexus Test Driver
Thread Starter
I think I found my parasitic electrical drain!!!!
YAY!!!!!!!!!!!!!!!!!!!!!!
30 amp fuse, the one labeled "DC cut 1". There's about 1.5 amps going through that circuit for several minutes after closing the door (but not locking the car), then it eventually cycles between about 400 and 700 ma.
Now, to figure out what it is turning itself on/off and/or being the drain. Unfortunately, it appears that fuse is for a sub-panel of fuses inside. I shudder to think what some of those acronyms stand for.
I don't think there's another drain, either, because with that fuse pulled, the draw comes down to about 50 ma, and that's with the alarm armed.
30 amp fuse, the one labeled "DC cut 1". There's about 1.5 amps going through that circuit for several minutes after closing the door (but not locking the car), then it eventually cycles between about 400 and 700 ma.
Now, to figure out what it is turning itself on/off and/or being the drain. Unfortunately, it appears that fuse is for a sub-panel of fuses inside. I shudder to think what some of those acronyms stand for.
I don't think there's another drain, either, because with that fuse pulled, the draw comes down to about 50 ma, and that's with the alarm armed.
01-23-17, 04:27 PM
#3
Lexus Test Driver
Thread Starter
I'll know by Friday.
01-29-17, 10:28 AM
#5
Lexus Test Driver
Thread Starter
Here's what I'm 99.9% sure what it was.
I have an Ultragauge, which is a device that displays OBDII-sourced info. Miles, gallons used, engine temp (to a tenth of a degree until 200F), etc.
Well, I always leave it plugged in because the OBDII port should be 12V-free when the ignition is off.
Nope!!!
I'll know more in another week, but I've not had to put a charger on it since last weekend. Well, I did for a short period, at the 2A setting, while I had the ignition 'on' and flipping through the Techstream settings.
I have an Ultragauge, which is a device that displays OBDII-sourced info. Miles, gallons used, engine temp (to a tenth of a degree until 200F), etc.
Well, I always leave it plugged in because the OBDII port should be 12V-free when the ignition is off.
Nope!!!
I'll know more in another week, but I've not had to put a charger on it since last weekend. Well, I did for a short period, at the 2A setting, while I had the ignition 'on' and flipping through the Techstream settings.
03-15-18, 01:27 PM
#6
Driver School Candidate
I realize this thread is over a year old,,,,,but would like to know:
Mckellyb, Have you finally resolved the issue with Parasitic battery drain ? and how did you do it?
Thanks,
Slews
Mckellyb, Have you finally resolved the issue with Parasitic battery drain ? and how did you do it?
Thanks,
Slews
03-15-18, 01:31 PM
#7
Lexus Test Driver
Thread Starter
See the post immediately before yours.
It was the Ultragauge.
It was the Ultragauge.
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03-15-18, 02:41 PM
#8
Driver School Candidate
Roger that Mckellyb. I guess I didn't capture your meaning there; My Bad.
I've got a 2008 LS460L that had the battery discharge on a 1 year old (Lexus 84 month) battery after the car sat for a week. And saw previous owner maintenance history with battery draining problem...So, I am just doing forum review on others that may have experienced the same.
Cheers,
S
I've got a 2008 LS460L that had the battery discharge on a 1 year old (Lexus 84 month) battery after the car sat for a week. And saw previous owner maintenance history with battery draining problem...So, I am just doing forum review on others that may have experienced the same.
Cheers,
S
03-16-18, 03:51 AM
#9
Lexus Test Driver
Thread Starter
No worries. Time to start pulling fuses with a meter hooked up to the battery. For joy.
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