H3 Vampire Drain Found? FYI

[H3-ING]

Truck off, key not in ignition, ...H3 battery drain?
After replacing my dome and map lamp oem bulbs with LED bulbs I noticed this drain.
My buddy recently replaced his bulbs with LED and called me with the same issue in his H3.
Not enough draw to light up up a filament bulb. I had 2 oem batteries go dead and wondered why???

 

[RamRod]

I have this as well! Didn't notice until I went to LED's as well!!


Sent from handheld smoke signal device

 

[poncho1965]

My LED's don't light up when ignition is off...


Mike

 

[Panzer07]

I was just gonna upgrade to those led's but they didn't had all 6 in stock so I didn't upgrade...and I'm glad I didn't then...since they aren't cheap.


Sent From Someone Else's iPhone 'Cause I'm Too Broke To Own One.

 

[RamRod]

I don't think LED's cause the problem, but they make it visible since they require much less current to light up

 

[Hayden]

yep, mine stay slightly lit too but its never drained my battery to the point where its noticable

 

[RamRod]

yep, mine stay slightly lit too but its never drained my battery to the point where its noticable

x2

I have purposely left all my LED's on over night to see if there would be an noticeable drain on the battery... nope none!

 

[mmaaddmmaaxx]

I also got LED replacements and mine don't light up nor drain the battery... (left the car couple times for a week standing... yeah, yeah...shame on me...)

 

[Chocflip201]

I just replaced my domes and floorwell lights with LEDs, my domes stay ever so dimly lit. I'll see if it makes the battery suck dry and report back.

 

[Chocflip201]

 

[RamRod]

I just replaced my domes and floorwell lights with LEDs, my domes stay ever so dimly lit. I'll see if it makes the battery suck dry and report back.

Mine have been doing that for over a year and it's never left me without a charge, even after sitting for a few days in a row

 

[Best4x4]

My LED's don't light up like. Zero drain issues.

 

[4speedfunk]

Moral of the story....leave it alone.

 

[Chocflip201]

I let the hummer sit for a few days. No drain issue at all.

 

[rsc]

For those with this issue, have you pushed the little button below and to the left of the headlight knob? It turns off the overhead light...

 

[4speedfunk]

I've noticed the parasitic voltage drain problem seems to appear after all sorts of aftermarket accessory add-ons, (most notably...LED stuff). So does anybody out there have this issue without any add-ons?

 

[rsc]

Occassionally when leaving mine sitting I would notice a drain. I thought it was from not locking the truck with the key fob.

 

[4speedfunk]

Yeah...strange un-explained battery drain on "accessorized" H3s is quite common. In fact, its so common that as much as I like LED lighting...I'm afraid to start messin around with any sort of upgrades for fear of opening a pandora's box of gremlins (like Hans3T and so many others). Lots of guys with remote starts and aftermarket stereos have on-going charging issues that never seem to get solved. This red T I'm currently working on has some weird electronic stuff goin on...and YES, it has dual batteries, add-on lighting, a battery tender module, and some other stuff that makes we question if the extras are worth the troubles that seem to come with them. A couple other guys have had repeated pass-lock failures, and as these trucks reach the 5-year old mark, I see patterns that seem to point to the charging system.

Here's a similar thread that was recently posted...
http://www.hummer4x4offroad.com/forum/showthread.php?9433-A-little-help-please!

Frankly...when I see an H3 for sale with an aftermarket head unit, blue-tooth devices, radios, remote starts, LEDs etc...its a deal-breaker. I simply don't want the headache of troubleshooting 20 miles of wire and gigs of data. I'm a firm believer...A vehicle should not have an operating system! (even though they all do now days).

 

[rsc]

I totally agree with you

 

[3rdH3]

Just now got around to finding the parasitic drain on my wife's Trailblazer. It ended up being the radio. Pulled the fuse and it went away.

 

[cna]

I used to have the same issue where the dome leds used to stay on dimly after the vehicle was off , I found a easy fix was to get 2 Can-bus leds for the foot-well now everything works like factory guess it just needs a little resistance