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Acura MDX 2010-2011 Battery Warning Problem

9 messages,  Last post on Mar 26, 2013 at 4:03 PM

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#1 of 9 Acura MDX 2010-2011 Battery Warning Problem by 997_dude

Jan 26, 2011 (2:37 pm)

I was thinking about getting an MDX when I came upon this thread, which suggests a significant, recurring problem with the battery warning system in the 2010 and later model MDX:
 
http://www.mdxers.org/forums/74-2007-newer-mdx/39239-check-battery-sensor-mdx-20- 10-a.html
 
When I called Acura, I was not convinced that they had a fix for the problem that would work.
 
Is anyone not experiencing this gremlin? Any bad experiences to share? Would you buy the car knowing about the problem?

#2 of 9 Re: Acura MDX 2010-2011 Battery Warning Problem [997_dude] by mdxbmrguy63

Jan 30, 2011 (8:53 am)

Replying to: 997_dude (Jan 26, 2011 2:37 pm)
I get this all the time. The dealership told me it would go away. It comes back every few days but doesnt impair the starting or running of the mdx.
just annoying.

#3 of 9 Re: Acura MDX 2010-2011 Battery Warning Problem [mdxbmrguy63] by scott_mc

May 02, 2011 (7:40 pm)

Replying to: mdxbmrguy63 (Jan 30, 2011 8:53 am)
Got the first warning after about 2 weeks. Completely recharged the battery. The warning came back after another 2 weeks. Took it the dealer to have them check the battery. Battery tested out. They recommended driving it longer distances (I tend to take a number of small trips).
 
Last weekend I drove about 70 miles out of town. The warning indicator was on the entire trip down. Went off on the trip back. But the warning came back on Monday. It's still on despite just driving it for 40 minutes.
 
I've never had trouble starting the vehicle. Just loss of confidence. Shouldn't have worry about driving 2011 MDX with less than 2000 miles out of town.

#4 of 9 Acura 2011 MDX Battery Warning by mnshea

May 11, 2011 (7:44 pm)

I have had my MDX about two months. Within the first week of driving, saw the low battery warning on intermittently. It seems to make no difference how far or how long the car has been driven. The warning comes and goes. Took it to the dealer who told me it's a "known software issue", to disregard the warning, and that Acura was "working" on a fix. In the meantime, there appears to be no way to distinguish between a valid low battery warning and one that isn't.
It will be interesting to see if Acura makes an effort to resolve the issue.

#5 of 9 Re: Acura MDX 2010-2011 Battery Warning Problem [scott_mc] by wwest

May 12, 2011 (7:55 am)

Replying to: scott_mc (May 02, 2011 7:40 pm)
You probably have an intermittent failure within the regulator (internal to the alternator). The indicator/indication is that the alternator cannot supply enough current flow for energizing its own rotor.
 
Obviously not the case.

#6 of 9 Re: Acura 2011 MDX Battery Warning [mnshea] by kingfans1

May 15, 2011 (6:14 pm)

Replying to: mnshea (May 11, 2011 7:44 pm)
It happend once in my 2010 honda pilot.. It was very cold ( 15F ). after that, I never saw the warming.

#7 of 9 Re: Acura 2011 MDX Battery Warning [kingfans1] by ga2010mdx

Sep 10, 2011 (11:29 am)

Replying to: kingfans1 (May 15, 2011 6:14 pm)
Just logging that we have the same issue with our 2010 MDX Tech. Mainly small trips and if the radio has been on during cleaning. The warning disappears by itself after some time on a longer trip that charges the battery. Very annoying.

#8 of 9 2011 Acura MDX - Replace Battery Warning by pandorasenigma

Mar 22, 2013 (12:36 pm)

My 2011 MDX is doing this too. When I called the dealer, they just told me to bring it in, and acted as if they had never heard of this before. I also searched recalls etc. and can not find anything. Does anyone have a copy of the letter they received?

#9 of 9 Re: 2011 Acura MDX - Replace Battery Warning [pandorasenigma] by jccai1

Mar 26, 2013 (4:03 pm)

Replying to: pandorasenigma (Mar 22, 2013 12:36 pm)
Our 2010 Tech/Ent. displayed this warning a couple of times, usually after the car had sat in the garage for two or three days. Took it the dealer and the battery checked out every time. It recurred even after they had applied the software patch related to battery monitoring. The dealer told me not to worry about it. Well, the next time I ignore the warning, I might end up with a real dead battery on a cold night in the middle of nowhere. Nice job instilling confidence in your customers, Honda! Guess whose product I'm going to buy next time?

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