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leaving radio on when turning off the engine drains the battery

14 messages,  Last post on Feb 27, 2012 at 2:52 PM

You are in the Hyundai Santa Fe Forum.

What is this discussion about? Hyundai Santa Fe, Audio

Messages Page 2 of 2

#10 of 14 Re: leaving radio on when turning off the engine drains the battery [sdseab by jnt

Mar 15, 2008 (7:25 am)

I messed up in typing so here is correction:
 
Whenever you turn off the IGNITION to the car, the normal radio would go to SLEEP and uses very little power (<1mA in SLEEP mode vs. 2A in OPERATING mode). So assuming your battery has 200 Amp Hour capacity or 200,000 mA hour. It would take 200,000 hours for the battery to be drained by the radio in SLEEP mode. That is about 347 days. Now if the radio is not going to SLEEP and stays in OPERATING mode with IGNITION off, it would draws 2A. Then the battery will be gone in 100 hours which is less than a week But there are many electrical modules inside the car which also draw battery power. Any of them, if not working properly could drain the battery. Another thing: for people who only drive 2-3 miles each day, then the battery may not be recharged enough and eventually it would lose its energy. In that case, take the vehicle out for a long distant driving once in awhile to replenish the battery, lubricate the system,...

#11 of 14 Re: leaving radio on when turning off the engine drains the battery [sdseab [jnt] by steve_ HOST

Mar 15, 2008 (12:17 pm)

Replying to: jnt (Mar 15, 2008 7:25 am)
I'll zap the dupe.
 
For future reference, after posting, you may edit your post for 30 minutes.

#12 of 14 Re: leaving radio on when turning off the engine drains the battery [steve_ by jnt

Mar 17, 2008 (6:09 pm)

Replying to: steve_ (Mar 15, 2008 12:17 pm)
Thanks,
 
jt

#13 of 14 radio & battery by boeing1

May 02, 2008 (1:26 am)

the first thing i would do is check the battey its probably no good

#14 of 14 Re: leaving radio on when turning off the engine drains the battery [sdseab [jnt] by rfaronson

Feb 27, 2012 (2:52 pm)

Replying to: jnt (Mar 15, 2008 7:25 am)
I've had this problem with my 2004 Accord for almost 200,000 miles. All night long, the radio console flashes on and off even though the key is in my pocket. If I leave the radio/CD on, then it also plays for about half a second. A high end stereo repairman said it was a known problem to him caused by bad solder on that Accord, and resoldered all the places he saw where it had run. That fixed things for about six months (he did warn me it might start happening again). Recently it flashes so much that if I leave it for 4 or more days, it won't start. A friend suggested removing the Radio Fuse if I'm going out of town. Will that work? Where is that fuse?

Messages Page 2 of 2

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