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MASTER TECH
MASTER TECH, Honda Service Technician
Category: Honda
Satisfied Customers: 5716
Experience:  28 years of Honda training and a master Honda tech
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I have a 2012 Honda civic lx.recently the battery has been

Customer Question

I have a 2012 Honda civic lx.recently the battery has been draining for some unknown reason. Replaced alternator twice. Took to dealer and everything checked OK. Told the after market remote was possibly culptleit so had it removed. Charged battery completely and now not a week later, battery is dead again. Nothing being left on or plugged in.
Everything checks good on tests. No engine codes.
What could be causing battery to drain and car not wanting to start?
Submitted: 1 year ago.
Category: Honda
Expert:  MASTER TECH replied 1 year ago.

hello welcome to just answer I am master tech and will be able to assist you

Expert:  MASTER TECH replied 1 year ago.

is their any other aftermarket stuff installed on the car like radio amps ?

Customer: replied 1 year ago.
No
Customer: replied 1 year ago.
Only other add on was a set of horns to replace factory horns.
These are using oridiginal horn wiring
Customer: replied 1 year ago.
When checked at Autozone was told alternator was bad so replaced it. Rechecked after replacing and told voltage regulator was bad on new alternator son replaced a second time. Car ran a week then wouldn't start because battery was dead.
Recharged battery carvran a couple days. Took to victory Honda in Muncie and had complete electrical check fine. Came back nothing wrong. They saw sticker for rote start system and said that was culprit so had them remove it. A week later car still doing same thing.
Customer: replied 1 year ago.
Don't want to have to keep putting on charger as it will eventually ruin battery
Expert:  MASTER TECH replied 1 year ago.

ok a parasitic draw test needs to be done.

do you have a volt/ohm meter?

Expert:  MASTER TECH replied 1 year ago.

this remote starter is this aftermarket also ?

Customer: replied 1 year ago.
Don't have meter but vam go to Autozone
Remote starter was after market but it is completely out of car. Had victory Honda remove complete system
Customer: replied 1 year ago.
Can go to Autozone and have them hook to their meter
Expert:  MASTER TECH replied 1 year ago.

no this is not the same.

you have to do this with a volt meter.

Customer: replied 1 year ago.
I can buy one but never used before so would be lost
Expert:  MASTER TECH replied 1 year ago.

ok normally the meters will come with a user manual and show you how to do a simple draw test.

but it involves disconnecting the battery cable and placing the meter leads inline to get the reading.

I can look up a video on you tube for you to show you how simple it is.

once this is hooked up then you simply start removing one fuse at a time in the fuse box to see which circuit is causing this then see what has been installed.

also if you have anything plugged into the accessory port like a phone charger or something like that it will draw.

Customer: replied 1 year ago.
Nothing is left plugged in and lights are all turned off as well as radio
Customer: replied 1 year ago.
Can you send me link to the videa you mention and I will go buy a voltage meter
Expert:  MASTER TECH replied 1 year ago.

yes give me a minute to look this video up.

Expert:  MASTER TECH replied 1 year ago.

ok I found a really good one.

https://www.youtube.com/watch?v=ES-rjFfuxq4

Customer: replied 1 year ago.
Will any volt/ohm meter work or do I need a special kind?
Expert:  MASTER TECH replied 1 year ago.

as long as it will do MA

Expert:  MASTER TECH replied 1 year ago.

sears will have a good basic volt meter.

Customer: replied 1 year ago.
Which of these will work for what I need to do
Expert:  MASTER TECH replied 1 year ago.

the middle or the one on the right will be best suited.

Customer: replied 1 year ago.
OK I'll get the middle as its the best for the price
Expert:  MASTER TECH replied 1 year ago.

ok

then follow the video i sent and you will arrive at the source of your draw

Customer: replied 1 year ago.
Will watch video and see what to do then perform checks and advise on findings
Expert:  MASTER TECH replied 1 year ago.

ok keep me posted also make sure to close the hood latch you will need to push the latch down just like he did in the video on the doors.

Customer: replied 1 year ago.
Ok
Expert:  MASTER TECH replied 1 year ago.

I will wait for your results.

Customer: replied 1 year ago.
This is reading I get doing a check with negetave battery off car
Customer: replied 1 year ago.
Second test same way
Expert:  MASTER TECH replied 1 year ago.

ok and you let the system go to sleep and any door thats open you have the latched closed.

Customer: replied 1 year ago.
no doors open.
Removed first fuse in second row and meter dropped to 0.76/0.77
Customer: replied 1 year ago.
This is fuse cover describing which fuse is which
Expert:  MASTER TECH replied 1 year ago.

ok if you open the door using the handle then close and open it again and latch the latch and show me the display.

Expert:  MASTER TECH replied 1 year ago.

ok thats a small amount not a issue their

Customer: replied 1 year ago.
Door open
Expert:  MASTER TECH replied 1 year ago.

ok now set your watch and see when it drops down .

Customer: replied 1 year ago.
Door closed
Expert:  MASTER TECH replied 1 year ago.

according to this reading I don't see a large draw to account for the dead battery

Customer: replied 1 year ago.
Door open and latch closed
Expert:  MASTER TECH replied 1 year ago.

now how long is this sitting before it goes dead ?

ok that second reading is normal until the system goes to sleep in like 15 minutes

Customer: replied 1 year ago.
Interior light still on with door open and latch closed
Expert:  MASTER TECH replied 1 year ago.

turn it off

Expert:  MASTER TECH replied 1 year ago.

their is a door switch for the light covered with a rubber boot

Customer: replied 1 year ago.
Car will run a week and before week is over she will go to start it and it won't start.
That's with her driving every day and next morning car won't start
Expert:  MASTER TECH replied 1 year ago.

ok so something in the system is awake and if you look at the fuse box cover you removed see the relay for the a/c clutch it will have a snow flake on the cover it's a black relay remove it and and leave it out and see if this continues.

we have had lots of issues with these relays but personally have not seen them yet on the 12 yet.

I have a 12 civic also and drive mine daily for work and no issues yet

Customer: replied 1 year ago.
Found the relay but mine is light green according to the cover
Expert:  MASTER TECH replied 1 year ago.

let me look at mine give me a minute

Customer: replied 1 year ago.
This is what meter went to after I removed the relay
Expert:  MASTER TECH replied 1 year ago.

ok mine is black.

if you look at the cover it has a arrow on the cover noting the front. so the relay is closest to the fender

Customer: replied 1 year ago.
I had wrong one
Expert:  MASTER TECH replied 1 year ago.

looks that way

Customer: replied 1 year ago.
Here is new reading
Customer: replied 1 year ago.
0.52/0.51 back up to 0.56
Customer: replied 1 year ago.
Back up to 0.75
Customer: replied 1 year ago.
Relay is still out and meter went back to high numbers
Expert:  MASTER TECH replied 1 year ago.

ok wait for it to go back to sleep all the doors are closed ? you can close them . make sure to open the door with the handle to release the latch

Customer: replied 1 year ago.
With relay back in meter is at 0.77-0.
Customer: replied 1 year ago.
0.79
Expert:  MASTER TECH replied 1 year ago.

the system has to go to sleep

Customer: replied 1 year ago.
Ok relay is out and all doors are closed
Customer: replied 1 year ago.
Meter reads 0.72 to 0.73
Expert:  MASTER TECH replied 1 year ago.

ok

Customer: replied 1 year ago.
Down to 0.67 to 0.69
Customer: replied 1 year ago.
Went back up to 0.73 0.74. 0.75 fluctuating there
Customer: replied 1 year ago.
Should I try pulling fuses inside car to see if there's a change
Expert:  MASTER TECH replied 1 year ago.

no

Expert:  MASTER TECH replied 1 year ago.

yes pull the fuse one at a time.

Expert:  MASTER TECH replied 1 year ago.

what ever you did the system is on now

Expert:  MASTER TECH replied 1 year ago.

the relay is still out correct.

Customer: replied 1 year ago.
relay is still out
Expert:  MASTER TECH replied 1 year ago.

ok lets start pulling one fuse at a time and monitoring the draw

Customer: replied 1 year ago.
Pulled each fuse and no change
Customer: replied 1 year ago.
Still reads 0.72. 0.73
Expert:  MASTER TECH replied 1 year ago.

ok check the ones in the engine bay

Expert:  MASTER TECH replied 1 year ago.

dome lite it off ? hood latch it closed position also

Customer: replied 1 year ago.
Meter down to 0.4 0.4 . 0.48
Customer: replied 1 year ago.
0.45. To 0.48
Expert:  MASTER TECH replied 1 year ago.

ok your in limits

it should come down more some systems are still awake. .50 m/a is the max you want to see

Customer: replied 1 year ago.
Back to 0.70
Customer: replied 1 year ago.
Door was ajar
Expert:  MASTER TECH replied 1 year ago.

ok so every fuse was pulled one at a time and the meter never changed ?

Customer: replied 1 year ago.
Right
Expert:  MASTER TECH replied 1 year ago.

ok lets start over make sure the doors are all closed and the hood latch is in the closed position. its vrey hard to push down but this needs to be done

Customer: replied 1 year ago.
Meter is gradually dropping back down again
Expert:  MASTER TECH replied 1 year ago.

ok

Expert:  MASTER TECH replied 1 year ago.

lets see where this is at in 15 minutes ok

Customer: replied 1 year ago.
Doors all closed and hood held closed with vice grips
Customer: replied 1 year ago.
Meter reading 0.66 to 0.68
Customer: replied 1 year ago.
But gradually dropping
Expert:  MASTER TECH replied 1 year ago.

vise grips ? the latch needs to be latched

Customer: replied 1 year ago.
It is in closed position and held down there
Customer: replied 1 year ago.
Hood latch closed
Customer: replied 1 year ago.
Meter slowly dropping
Customer: replied 1 year ago.
0.64. 0.65
Expert:  MASTER TECH replied 1 year ago.

ok not sure why you used the vise grips

Expert:  MASTER TECH replied 1 year ago.

if you push it down all the way it will lock and nothing will be needed to hold it

Customer: replied 1 year ago.
Ok will try to get it locked down on its own
Expert:  MASTER TECH replied 1 year ago.

ok

makes a difference on the micro switch

Customer: replied 1 year ago.
Just got new relay should I install it
Expert:  MASTER TECH replied 1 year ago.

did you find a problem with the relay of just preventative

Customer: replied 1 year ago.
Just preventative
Customer: replied 1 year ago.
Don't know how to test relay
Customer: replied 1 year ago.
Just made sure hood latch is locked without vice grips.
Meter reading 0.51. 0.52
Customer: replied 1 year ago.
Doors closed and dome light out
Customer: replied 1 year ago.
Dropped down to 0.45
Customer: replied 1 year ago.
Have not installed the new relay yet.
Expert:  MASTER TECH replied 1 year ago.

ok it's a tad high normally we see around .30 so something is awake still. peek under the dash on the drivers side and see if you see any remains of that alarm still.

Customer: replied 1 year ago.
All the wires for the alarm and the control boxes were removed
Expert:  MASTER TECH replied 1 year ago.

ok. all the doors are flush when closed ?

Customer: replied 1 year ago.
Was not the alarm that was removed itbwas the after market remote starter
Expert:  MASTER TECH replied 1 year ago.

also if the doors are still closed use the key to cycle the door lock manually .

Customer: replied 1 year ago.
Expert:  MASTER TECH replied 1 year ago.

ok use the key to cycle the lock and then manually lock it with the key not the fob and then monitor

Customer: replied 1 year ago.
Just locked doors meter went up but dropping again
Expert:  MASTER TECH replied 1 year ago.

yes it will do that since the system was woken up. let it go to sleep and see what you have in like 15 minutes or so.

have seen these take 20 minutes or so to finally go to sleep

Customer: replied 1 year ago.
Oops sry bout that just cycled manually instead of with remote
Customer: replied 1 year ago.
Reading 0.48 0.49 but looks as if it is dropping
Customer: replied 1 year ago.
First time I cycled with key numbers dropped to 0.12. 0.13
Customer: replied 1 year ago.
Will give it time to settle then check numbers
Expert:  MASTER TECH replied 1 year ago.

that is good their but lets see where it goes in 20 minutes.

Customer: replied 1 year ago.
Ok will check in 20 and advise
Customer: replied 1 year ago.
Going from 0.39 to 0.42
Customer: replied 1 year ago.
Still have not replaced the relay I took out
Customer: replied 1 year ago.
Dropped down to 0.3 to 0.35
Customer: replied 1 year ago.
0.32 to 0.35
Customer: replied 1 year ago.
It seems to be jumping between 0.32 to 0.40
Customer: replied 1 year ago.
What do you think ?
Do you think that ac relay was the problem since the meter is reading in the 0.30 range.
Customer: replied 1 year ago.
Just checked battery 14 volts 43 % charge showed bad on tester so replaced battery.
Will put full charge on and have her drive normally. Should know if problem fixed in a couple days. Thanks for your help and advice.
Will let you know either way.
Expert:  MASTER TECH replied 1 year ago.

sorry for the delay. was out of the house

Expert:  MASTER TECH replied 1 year ago.

yes it looks like the relay might be sticking at times and causing a larger then normal draw

Expert:  MASTER TECH replied 1 year ago.

I would replace the relay and then recheck in a day or two.

Expert:  MASTER TECH replied 1 year ago.

hello how is this holding up anymore draw issues ?