2011 Odyssey EX-L - Check Charging System & Battery Light
NEWS

  1. Welcome to Honda Odyssey Forum : Odyssey Minivan Forums General discussion forum for Honda Odyssey

    Welcome to Honda Odyssey Forum : Odyssey Minivan Forums - a website dedicated to all things Honda Odyssey.

    You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, Join Honda Odyssey Forum : Odyssey Minivan Forums today!
+ Reply to Thread
Page 1 of 2 12 LastLast
Results 1 to 15 of 18

Thread: 2011 Odyssey EX-L - Check Charging System & Battery Light

  1. #1
    Registered User
    Join Date
    Apr 2016
    Location
    West Texas
    Posts
    129

    2011 Odyssey EX-L - Check Charging System & Battery Light

    I'm pulling my hair out over this one. I haven't found a single person on the World Wide Web that shows to have had this problem. Hopefully, someone here on the forum knows what I need to do.

    Problem:

    Several weeks ago the "Check Charging System" message popped up on the information display, along with a glowing "battery" light.

    The van always starts, the battery has never gone dead and all other electrical systems work as they should.

    What I've tried so far:

    Had battery Load Tested several times, by different places. Even though it's 4 years old, it checks "Good".

    Had the alternator checked several times, by different places. Checked it myself with a DMM. It shows to be working fine.

    Replaced the ELD (electrical load detector). No change.

    Took van to Honda dealer. They do an ECU update and check for codes. No codes found. They say I "might" need a new alternator.

    Dealer wanted $1,100.00 to replace the alternator and no guarantee that it would solve the problem.

    Load tested both battery cables. They were fine.

    Removed alternator and had it bench tested, which showed it was good. Technician took it apart and replaced the voltage regulator and diodes for the rectifier.
    Still have the message and light.

    Had the battery tested by Interstate Battery today and after (3) simulated starts at the maximum Cold Cranking Amps, it was on the border-line of marginal & good.

    Went ahead and replaced the battery. No change.

    Did a Battery Cable Reset without any luck.

    This is our 14th Honda and 5th Odyssey and unfortunately, this is first one to ever have a problem and it's a doozy.

    Any ideas on what to do next, other than trade for a Sienna?

  2. Remove Advertisements
    OdyClub.com
    Advertisements

  3. #2
    Registered User
    Join Date
    Sep 2009
    Location
    TX
    Posts
    1,299
    Check the ground connections for corrosion.
    Hidden Content

    Hidden Content - Home for all the ODY Parts!

  4. #3
    Registered User
    Join Date
    Apr 2016
    Location
    West Texas
    Posts
    129
    Quote Originally Posted by yakuza View Post
    Check the ground connections for corrosion.
    All ground connections are clean and tight.

  5. Remove Advertisements
    OdyClub.com
    Advertisements

  6. #4
    Registered User
    Join Date
    Mar 2010
    Location
    CO
    Posts
    2,173
    After it sits overnight, is the battery voltage around 12.6 volts?
    With the engine running, does it measure around 14v with most of the acc on, including seat heaters,lights, etc and at a fast idle?
    The two main grounding connections are from the bat (-) term to the frame and the other is from the frame (near the radiator top on the battery side) to the engine, at least on my '03.
    Course there are many more grounds scattered throughout.
    Tough to trouble shoot and I sure hope someone who had that problem has the answer and posts it.
    Buffalo4
    2003 EX-L
    179k miles orig tranny June 2017

  7. #5
    Registered User
    Join Date
    Mar 2010
    Location
    CO
    Posts
    2,173
    Some with a similar problem posted,but unfortunately they never found the cause. Interesting read, and perhaps some hints.
    Check Charging System Light - Alternator/Battery Diagnostics Good.
    Just read your post of Apr 12 where you did test the voltage with the accessories on and the engine running and it sounded good.
    You also stated that one time your ABS and Traction Control indicators went on, but then stayed off after a reset. Probably a bad connection 'somewhere' causing all your problems.
    More searching on the Internet for one thing at a time may be helpful, esp if you can find a common cause.
    Just read your yesterday's post about the rebuilding of the alternator. http://www.odyclub.com/forums/54-201...-message.html\

    Well, post back with the result. Sad you are having such a problem, but at least it is driveable.

    Buffalo4
    2003 EX-L
    179k miles orig tranny June 2017

  8. #6
    Registered User
    Join Date
    Mar 2013
    Location
    Philly
    Posts
    14
    Did you ever find out the problem? My 2011 just had that same lights and message pop up

  9. #7
    Registered User
    Join Date
    Apr 2016
    Location
    West Texas
    Posts
    129
    Quote Originally Posted by Babywagon View Post
    Did you ever find out the problem? My 2011 just had that same lights and message pop up
    Yes I did...It was the alternator.

  10. #8
    Registered User
    Join Date
    Mar 2010
    Location
    CO
    Posts
    2,173
    Since:
    "Had the alternator checked several times, by different places. Checked it myself with a DMM. It shows to be working fine."
    "Removed alternator and had it bench tested, which showed it was good. Technician took it apart and replaced the voltage regulator and diodes for the rectifier.
    Still have the message and light."
    What finally happened that made you finally replace the alternator? A different test or did it finally just not work anymore?
    Any idea which part was the guilty party?
    Did you use a rebuilt, re-mfg,new aftermarket or an OEM alternator for the replacement?
    Thanks for any additional info and suggestions.
    Buffalo4
    2003 EX-L
    179k miles orig tranny June 2017

  11. #9
    Registered User
    Join Date
    Apr 2016
    Location
    West Texas
    Posts
    129
    My apologies for not being more specific in my previous response.

    Specifically: After the voltage regulator & diodes were replaced in the alternator, the technician ran another bench test, which indicated the alternator was working correctly, just as it did before they rebuilt it. I reinstalled it and still had the trouble lights, so I called the repair shop. They had me remove it and bring it back in. In the meantime, the owner of the shop reached-out to a company who actually manufactures alternators, to see if they could offer some suggestions. What he found was my alternator, like many of the newer alternators, is a "smart" device. It is constantly communicating with the ECM and other computers on the vehicle. When they bench tested the alternator, after the rebuild, it basically screwed-up the communication pathway between the alternator and ECM. The manufacturer instructed him to replace the voltage regulator & diodes and install it back in the vehicle, without a bench test.

    It worked and everything is good!!!!

    Hope this helps.

  12. #10
    Registered User
    Join Date
    Mar 2010
    Location
    CO
    Posts
    2,173
    Now that is interesting !!!!
    Thank you so much for that post.
    Buffalo4
    2003 EX-L
    179k miles orig tranny June 2017

  13. #11
    Registered User
    Join Date
    Jun 2017
    Location
    Stuart
    Posts
    2

    Unhappy

    Quote Originally Posted by WestTexasRanger View Post
    Yes I did...It was the alternator.
    Hello. I am having the same problem and just got my car back from the Dealer service. They replaced my alternator and battery and told me that the problem was solved. Unfortunately as soon I drove out of the car shop, I had the warning beep and the Check Charging System & Battery light came in again.
    It is very frustrating and it looks like the Dealer that I go to don't care . They keep insisting that there is nothing wrong, but there must be a reason for this light come on and off.

  14. #12
    Registered User
    Join Date
    Jun 2017
    Location
    Stuart
    Posts
    2
    Were you able to fix yours? Mine has the same problem and the alternator and the battery were replaced but the warnings still pop once and while. Let me know if there is anything else that I should check.

  15. #13
    Registered User
    Join Date
    Apr 2008
    Location
    SF Bay Area
    Posts
    718
    2011 Odyssey LX
    The car has around 80k miles and is running well. Battery is about 3 years old.

    My wife took this pic yesterday while driving. It shows the charging light (battery light) ON, **AND** the display shows CHANGE bATT.

    IMG_1789.jpg

    She reported the charging light as coming on and going off, and then later it went off and stayed off (but on, of course, when the engine is not running). She confirmed battery voltage at 12.52V (engine off, after sitting for a while), and voltage at terminals with engine running to be 14.3V (and the charging light off at that point). Since those numbers looked good, I gave her the green light to drive home, and she did so without incident. The charging light has not come on since then.

    Now, before I go through the troubleshooting, does anyone know if the charging light could be triggered by a battery issue? As of now, the problem seems to be gone, but I expect there is a problem somewhere, and she's going on a 6 hour round trip on Thursday.

    The alternator on my '99 was working perfectly when I did a pre-emptive rebuild (brushes and bearings) at around 220k. So it just would seem odd to me to have a failure at only ~80k miles on this one. But please let me know if they are now built to fail. For example, on my '99, I'll estimate that the brushes had used about 90% of their life in the 220k miles, and the bearings were replaced just because I was in there.

    Also, it seems the LX has different error reporting than some of the other models, which makes the information I've found via search here confusing.

    I know how to do all the battery and alternator testing, as if this were a normal car. But I don't know all of the weird stuff on these new Odysseys. So any advice there might help.
    2011 Odyssey LX, 74k miles
    1999 Odyssey EX, 230k miles, original owner

  16. #14
    Registered User John Clark's Avatar
    Join Date
    Oct 2008
    Location
    Charlotte, NC
    Posts
    5,381
    Yeah, charging systems are more complicated than they used to be. Below is the diagram for the charging system on the 2011 Ody:

    http://www.revbase.com/BBBMotor/Wd/D...dPdf?id=890005

    Basically, the PCM knows the amount of load on the electrical system by monitoring the ELD. Then, based on what it sees going through the ELD, it will control the field of the alternator by duty cycling it with a voltage from the PCM. I don't recall which wire it is, the C or the FR, that is the control for that, though.

    I would check the voltage at the battery with as many accessories turned on as possible. See if the alternator is keeping up. While the alternator is providing current, you can also do a voltage drop test across the battery positive terminal of the battery and the battery lead wire on the back of the alternator (heavy gauge wire.) You should see nearly zero volts. If you see 1-2 volts or more then you have a problem with the charging wire from the alternator to the battery. If you come up with nothing on that then I'd probably replace the battery and monitor for a while longer.
    2008 Odyssey Touring-Silver
    2011 VW Jetta SE-Black
    2002 GMC Sierra SLT LB Z71-Red
    1998 Nissan 200SX SE-Blue

  17. #15
    Registered User
    Join Date
    Apr 2008
    Location
    SF Bay Area
    Posts
    718
    Thanks for the info. Side question on the ELD ... I don't think my '99 Odyssey EX has this, so what year did they start using them?

    Yesterday, after my post, and before the Warriors game, I confirmed voltages (but not having seen your post, did not do the more detailed testing - will do that later today, I hope) and swapped batteries with another car.

    I was very careful to check on clean tight clamping at the posts, and the "new" battery (used for a few months with no problems at all in a different car) is dated Jan 2017. Cables basically look good. Very little corrosion of any sort anywhere on this car. Alternator has never been touched on this car. Belt is good, tensioner moves smoothly, tension seems good.

    Voltages checked and good, no warnings or lights on...

    And then my wife just reported (11 AM today) that when she turned the car off after driving, there was a beeping sound and the "CHANGE bATT" warning flashed.

    I have zero doubt in the "new" battery or its installation. I'll continue troubleshooting as suggested, and will happily accept any new advice on how to isolate the problem.


    Also - no CEL of course (I would have reported that). And other posts above refer to a message on the "charging system." Mine does not say that, just the "CHANGE bATT" message, as shown in the photo. Would it make sense to read codes if there is no CEL?
    Last edited by oldskewel; 06-13-2017 at 02:41 PM.
    2011 Odyssey LX, 74k miles
    1999 Odyssey EX, 230k miles, original owner

  18. Remove Advertisements
    OdyClub.com
    Advertisements

+ Reply to Thread
Page 1 of 2 12 LastLast

Similar Threads

  1. Check Charging System Message
    By WestTexasRanger in forum 2011 - 2017 Odyssey
    Replies: 9
    Last Post: 05-01-2016, 01:48 PM
  2. Check Charging System Light - Alternator/Battery Diagnostics Good
    By Pachyderm in forum 2005 - 2010 Odyssey
    Replies: 10
    Last Post: 12-08-2015, 07:56 PM
  3. Replies: 4
    Last Post: 06-03-2015, 09:18 AM
  4. Replies: 3
    Last Post: 04-20-2015, 04:45 PM
  5. 2011 Odyssey check engine light and traction control light
    By nagoner1 in forum 2011 - 2017 Odyssey
    Replies: 3
    Last Post: 01-13-2015, 10:04 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
Powered by vBadvanced CMPS v4.1.2