Why do I keep getting the message "Battery Voltage Low" on my 2012 TL even after battery replaced?
Asked by James Feb 03, 2015 at 02:23 PM about the 2012 Acura TL FWD
Question type: Maintenance & Repair
I have a 2012 acura tl and 2 months ago the battery was dead and needed a jump. Got it started and after driving on highway for a while to charge battery I get the message "Battery Voltage Low, turn off all electronics" I brought the car to the acura dealer and they replaced the battery on Jan. 5, 2015. Not even three weeks later I start getting the same message every time I shut the car off. The dealer checked and says the alternator is putting out 14.27V no load and 13.62V load and that this is normal and says nothing is wrong with charging system and they also found no current drain. If nothing is wrong then why do I keep getting these messages?
8 Answers
did you fix the problem? Iam having the same problem
Digitaldevil answered 8 years ago
There is an update to the firmware that is available. I bought a used 2012 TL last year and it had the same issue when they prepped the car. The tech had seen the issue before and was able to reset the software and correct the problem. No problem since. The dealer should be able to check their service bulletins to find the fix.
I had endless electrical problems in my Acura. Replaced the battery twice. Randomly my battery would "die". Low voltage alerts. All kinds of weird stuff that didn't make sense. Read another forum where a person said I had to reset the computer/electrical system. Followed his instructions and it worked like a charm, all my problems went away. 1. Turn key ignition to off. Remove key. 2. Open hood, unhook both positive and negative terminal wires. Cover battery with something (i used a piece of cardboard) to ensure nothing touches terminals by accident. 3. Connect negative and positive wires to each other with a jumper cable. 4. Turn key to on. Wait 10 minutes. 5. Turn key off, remove. Unhook the jumper cable from wires. Now remove cardboard (or whatever) and reconnect battery terminals to their corresponding wires. 6. Start car and rejoice. All my problems went away with this simple (and seemingly ridiculous) fix. I'm shocked that this worked, but it absolutely "reset" my electrical system. No more low voltage alerts, no more random dead battery, or sluggish starts. How Acura let this happen (I was starting to think my car was a lemon) is beyond me. The only thing you have to be careful of is knowing your radio reset code, but I had an aftermarket head unit so it didn't apply to me . Good luck.
When you say, turn the key on, do you mean you start the car?
I have a question. I replaced my battery and alternator, a year ago. A light came on, battery low. It than went off. Do I need a new battery?
Mine did it when the temp dropped to 14 degrees... maybe cold, dunno. Shop visit on Tuesday
