2012 Edge Battery Replacement Issue and Now ABS, AWD Off light, and Brake Warning Light On.

[fivelitregirl89]

Hello,

 

I'm new to this forum and am hoping someone might be able to help me with an issue that I am experiencing on my 2012 Edge SEL AWD. 3.5 V6. My battery was three years old and wouldn't hold a charge. I bought a new battery, swapped it out, and I kept getting the power saving mode message, turn the key off. I did some internet research, and checked the alternator and starter, with a battery tester tool from Advance, that checks the complete charging system. The alternator and starter test fine. So, I checked the fuses, all the fuses appear to be okay, and not blown, but as soon as I checked the fuses, hooked the battery backup, and started the Edge up, now the ABS, AWD, Servicetrac lights are on, in the dash, with a quick flash of the check charging system. I tried plugging in the obd code reader that my dad has, and no codes are showing. Has anyone else came across this issue? I would like to try and fix it myself without paying a high price at the garage, but I'm at my wits end! In December I had new front brakes, and rotors, and struts put on it. After installation they did a full alignment. I put a new set of tires on it, and it drove like brand new no issues. Then one day, I started to have issues with the battery once it got cold and have had this issue ever since. It runs and drives perfectly fine, and stops as it should, no issues there. It's really puzzling to me! 

 

Thank you in advance!

 

[1004ron]

Did you reset the Battery Monitoring System (BMS) after installing the new battery?

 

If not do a search for the procedure for that.

 

.

Edited Sunday at 11:26 AM by 1004ron

[fivelitregirl89]

Thank you for the response, I will see what I can find on that today. Appreciate it. Owner's manual told me about letting it idle and driving it for 10 miles to reset the idle after changing the battery, but nothing about resetting the battery management system. Appreciate the help! 

[1004ron]

Not suggesting that the BMS reset is related to the "ABS, AWD, Servicetrac lights" being ON, but still good practice.

 

With those warning lights and no fault codes showing on the code reader I would advise that you get it read at a place like Autozone or get an OBDII adapter to use with ForscanLite.

 

A bit of non-technical advice - you might get a little more interest in your posts if you used a little structure instead of the "wall of text" - some folks, myself included, find it hard to read and digest - of course that's not mandatory.

[enigma-2]

Sometimes when you replace the vehicle battery the temporary loss of power can cause various control modules (such as the ones you mentioned) to corrupt their nonvolatile memory.

 

There's a couple of things you can try, first (as you mentioned) drive around at a steady speed of 25–30 mph for several minutes. This will usually allow the ABS module to relearn its calibration. Then with the car still running and in park, turn the steering wheel all the way to the left and right (lock-to-lock). This should reset the steering angle sensor.

 

A second method is to disconnect one of the battery cables and then trun on the headlights. (They won't come on, but the load should discharge the internal capacitors located in the integrated modules. Leave the battery disconnected for 10 minutes. When reconnecting the battery lead, don't allow the cable to "touch and break" (that is throw sparks.) This causes a voltage "hash" to flow through the car's modules and screw up the modules memories. Always just press the battery cable connector down tight to the battery post (not necessarily connected) and then keep it in contact with the post while you work it on and tighten.

 

Making sparks during a connection sends voltage spikes through the modules through the "keep alive power" feeds. Bad for car, great in bed. 😗🎶