buster 1

hi all
my 2008 lx battery drains down to 7.7 volts after sitting 3 days.
battery was tested and is good.
i found that that there's a parasitic draw on fuse #23 fuse located under the hood.
#23 goes to the radio,memory and the interior light when set in the middle position.
i disconnected the radio but the draw did not change.
the light is off when the doors are shut and the engine off.
is there anything else on that circuit ?
any ideas ?
thanks

jordan1794

Easy way to test, remove the fuse and see what, electrically speaking, doesn't work.

Also, have you removed the fuse and then left it overnight? Without doing so you may not have found the true draw.

If I remember from what I've read here, computer activity continues for half an hour or so after the car is shut off, so until that point you can't get an accurate measure of what's pulling power when it shouldn't be.

Also, I'd assume you have but just checking, is the battery good?
EDIT: I can't read

ezone

How many amps is the draw?
Normal draw is 30mA or less.
Knowing the actual figure might give a clue as to what might be drawing current.

AC clutch stuck on--- Intermittently? That's common.

A sulfated battery can self discharge rather quickly. Many of these can pass average tests, even though they are bad. If the battery is original, it's automatically suspect. Same for cheapo discount battery.

ezone

Fuse 23

Audio Unit
DLC
Gauge control module (tach)
Gauge control module (speedo)
Immobilizer CU
MICU
Moonroof
Navi

buster 1

the draw was 0.35 ma./0.38 ma with all fusses in .
does the ac clutch relay energize even thou i don't use it (winter)

the battery is 1 year old and i had it tested at 2 garages. (100% good )
i removed #23 fuse and have been using the car .

after 3 days of not using the car ( #23 fuse out ), the battery voltage is 12.5
i thought it might be my car starter so i pulled both 30 amp fuses and put #23 back in and the battery now is 11.96 volts after sitting 2 days in a 50 degree garage. draw is 0.38 ma.

i pulled #23 out now draw is 0.00

ezone

Sounds close enough to OK, I'd leave it alone.


Defrost will engage the compressor when possible.Huh. An intermittent large draw that you just haven't caught in the act yet??

The other day I diagnosed a car with a smartphone controlled remote start that did just that. Took me a while to figure out there was more than just the regular remote start controller up under the dash.

buster 1

i took my car to a honda dealer to diagnose it . they replaced the box assembly ( up under the dash) ($421) part # 38200-sna-a34 .
about a week later the car sat idle for 3 days. battery dead again .
before the dealer worked on it , fuse 22 was for the radio now after they put this (box assembly ) in fuse 23 is for the radio
door locks are also on fuse 23
i don't remember if fuse 22 was also for the door locks
i took out # 23 and the draw went to 0 car sat idle for a week and started right up
dealer says its plug n play
does this sound possible ?
fuse 22 & 23 are under the hood

ezone

Dash fuse box is not plug and play due to immobilizer functions incorporated in the MICU. It must be programmed.

Fuse designations should be the same as before, I'm not aware of any fundamental changes to the fuse box in replacement versions. Check your fusebox cover and owners manual.


--------

If your problem is not fixed, they owe you a fix IMO.

buster 1

wow thanks ezone . i thought they were blowing smoke up my ... now ill take it to the manager

ezone

Don't jump on them with both feet yet.
Not necessarily blowing smoke, as far as technical details goes.
Blowing smoke would be lying. It's not a lie if one doesn't know the truth.

The person you speak with (service advisor) usually has very little knowledge of what actually goes on in the shop.


They are sales personnel, they sell the work that gets done in the shop.
They are not technicians, even though they may try to lead you to believe otherwise.
They parrot what they are told by the mechanics. Some can do it more convincingly than others.

It's a lot like playing the old game 'telephone'. Mechanic tells his facts (usually also written on the paper work order or electronic work order) to the advisor, who then attempts to remember enough of it to repeat the story to you to get you to buy the repairs.



The service manager at my shop was once a low end mechanic (oil changer plus a little more), but will try to convince people he's the greatest thing since sliced bread. Same goes for the service advisors.

buster 1

ill keep that in mind when i call them Monday
i will keep you posted
ps forget to mention it was the service manager that said it was plug n play
i don't have an owners manual but i know that my radio was on fuse 22 , now its fuse 23

ezone

Stick to the facts.

Example:
1) You brought it in because it was draining the battery
2) They charged you lots of money
3) It's still draining the battery, no apparent change, no fix.

Or, you know, whatever your complaint really is.



I think you may be able to get an owners manual PDF on Hondas site in the owners area.

Or give this one a try http://justgivemethedamnmanual.com/

buster 1

ill stick to the facts
according to my receipt everything is fixed. $850 i just read it.
do you think that's why my remote car starter battery goes dead within an hour or so?
are you a honda mechanic?
thanks again ezone

ezone

So your car has no problems?
I'm lost now.




What? A fob battery? Aftermarket?

I thought this car was slowly draining the 12v battery. The main battery in the car.



Some days I wish I wasn't.

buster 1

it is still draining the car battery if i leave fuse 23 in.
locks work with fuse 23 in but the drivers door lock/unlock button does not
i have to use the passenger lock/unlock button

ezone

Ok, so problem is still present.

Is your remote start an aftermarket system or is it from Honda?

buster 1

after market
its been in for about 4 years
would that be on fuse 22 or 23?

ezone

Disconnect it and then measure your draw?

I'm just guessing at ideas, anything aftermarket is always suspect.

Who the hell knows?
I bet not even your installer would know. LOL

buster 1

i took out 3 fuses from what looks like the car starter the draw was high
put them back in
took out fuse 23 and draw went to zero
would the dealer not know to check the remote starter?

buster 1

fuse 22 is 7.5 amp
fuse 23 is 10 amp

ezone

I can't speak for your dealer.




If I were the one doing the tests, I would only care about it if it was causing a problem at the time of the tests.

If nothing else could be proven though, it moves up the list of suspects.

buster 1

sorry i was wrong. it has been fuse 23 all the time that has been draining my battery.
i spoke with the manager today. car goes in tomorrow.

buster 1

it was the remote car starter. dealer disconnected it. cost me another $100