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Old 02-28-2019, 10:16 PM #16
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Quote:
Originally Posted by IBallEngineer View Post
What is your aversion to having the battery tested? Just curious.

Pointing the finger at parts that somebody's cousin in Manitowac once found to be their problem is just silly. 2 one hundredths of an amp will not drain your battery in a week.
My Landcruiser draws about twice that and it sits for a month easily.
Just havenít had the chance to run to the autoparts store to have it checked. It will be nice to officially rule it out, but Iíve already mentally discounted it as the issue. Hopefully Iíll know for certain this weekend.
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Old 02-28-2019, 10:17 PM #17
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Quote:
Originally Posted by LittleCaesar View Post
Keep an eye out on that alternator. You may be using that lifetime warranty sooner than later. What voltage output are you getting at the battery with the engine running?

I would still believe that something on the circuit is still open.
I want to say something just shy of 14. 13.7 maybe? When I run to have the battery checked this weekend Iíll keep an eye on what the scan gauge says.
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Old 03-01-2019, 08:36 AM #18
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If the alternator is warm/hot to the touch, it may be cooking itself.

Do you leave the scan gauge hooked up after turning off the 4Runner? I saw where someone’s SG would wake up and stay on for hours, draining their battery. Maybe unplug it next time.
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Old 03-01-2019, 03:24 PM #19
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I'd like to revisit something you said in the first post. How often are you driving your 4runner? Once a week? Once every other week? Once a month? I'm really leaning towards the issue that you aren't driving it enough.

I went through the same issue a few years ago. I was positive that I had a drain, and pulled my hair out trying to figure it out. The issue ended up being that my 4runner wasn't driven enough, and the battery wasn't charging. I'm in the same situation right where it's only driven once every other week, and now I have it hooked to a trickle charger.

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Old 03-02-2019, 01:52 PM #20
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Scan gauge is reporting between 14.3-14.4 volts while driving.

Battery tested sat.

Iíve had the dome fuse out since Tuesday and it started right up today no issues. I noticed that the clock is out along with my radio. What would be the best way to go about checking to see if there is some sort of draw from the radio? Any idea?
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Old 03-02-2019, 01:55 PM #21
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Quote:
Originally Posted by MStudt View Post
I'd like to revisit something you said in the first post. How often are you driving your 4runner? Once a week? Once every other week? Once a month? I'm really leaning towards the issue that you aren't driving it enough.

I went through the same issue a few years ago. I was positive that I had a drain, and pulled my hair out trying to figure it out. The issue ended up being that my 4runner wasn't driven enough, and the battery wasn't charging. I'm in the same situation right where it's only driven once every other week, and now I have it hooked to a trickle charger.

Mike
Well, battery was dying if it wasnít driven every 2-3 days. Once I gutted everything it was down to a 6-7 days. I wouldnít think a new battery would lose juice enough in that time period to not be able to start, but it is something to think about if I canít seem to figure anything else out.
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Old 04-01-2019, 08:13 AM #22
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Just a short update. Since I hooked up the multimeter and was pulling fuses, Iíve left the ďdomeĒ fuse out. I havenít had any issues with battery drain since doing so. I havenít had the chance to diagnose any further, but my assumption is itís something with the radio. Dome lights, radio, clock, and door locks are all out, radio seems most likely.
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Old 04-01-2019, 09:10 AM #23
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Quote:
Originally Posted by Myrunr2010 View Post
Just a short update. Since I hooked up the multimeter and was pulling fuses, Iíve left the ďdomeĒ fuse out. I havenít had any issues with battery drain since doing so. I havenít had the chance to diagnose any further, but my assumption is itís something with the radio. Dome lights, radio, clock, and door locks are all out, radio seems most likely.
Youíre doing a great job troubleshooting. Your assumption about the radio is reasonable, however with only 20 mA drain it sounds like your problem is intermittent. And it is within the dome fuse. Any one of those items could be intermittent.

I have not had the problem, however dome seems to be a trouble maker on these. Maybe try disconnecting power individually to radio and leave dome fuse in to see if that does it.

Electrical can be a headache and intermittent is the worst kind. Youíre almost there 👍
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Old 04-01-2019, 09:22 AM #24
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Quote:
Originally Posted by DaMonkey View Post
Youíre doing a great job troubleshooting. Your assumption about the radio is reasonable, however with only 20 mA drain it sounds like your problem is intermittent. And it is within the dome fuse. Any one of those items could be intermittent.

I have not had the problem, however dome seems to be a trouble maker on these. Maybe try disconnecting power individually to radio and leave dome fuse in to see if that does it.

Electrical can be a headache and intermittent is the worst kind. Youíre almost there 👍
Thatís the plan since the radio will be the easiest thing to rule out. Planing to just pull it out/put the dome fuse in, and leave it like that for a while to see if I have the same power draw. Weíll see though.

Assuming it is the radio...that would likely be an issue with the radio itself, right? Not something with the power leading to it?
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Old 04-01-2019, 11:46 PM #25
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Originally Posted by Myrunr2010 View Post

Assuming it is the radio...that would likely be an issue with the radio itself, right? Not something with the power leading to it?
if you disconnect power to the radio from right behind the radio (just pull harness out) then it must be radio because that's the only thing between power and ground.

if you disconnected isolated radio power upstream somewhere (behind fuse panel or something) and it fixed the problem, then your problem could be anywhere between where you disconnect and ground (at the radio). but that's real hard to imagine because the only place for that current to go would be a direct short from bad wire and would blow the dome fuse.

just pull harness out of radio. bezel is real easy on mine, but it might be possible to give her a reach around to pull the harness out. if you can reach it, and there are 2 harnesses, power is in the bigger harness of the two.

because it's intermittent, i have this creeepy feeling that it's a bum door switch that is intermittent. my first isolated target i think would be to pull the dome bulbs out and put dome fuse back in. i haven't taken a look at the circuit, but i think those go back to the door switches and those are switches that go through a lot of cycles and prob more apt to go bad. but you're whittled pretty far down the road.
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Old 04-03-2020, 07:20 PM #26
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Well, the radio has been out for months now and I havenít had an issue with electrical drain. Itís been so nice to get in and turn the key and it just work that Iíve been afraid to put a new radio in, lol. Iíve pulled the trigger though and will be replacing it once it comes in. Thereís a part of me worried that my electrical drain will come back with a new radio though.
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