Paul1017 Posted November 29, 2018 Share Posted November 29, 2018 During my commute tonight, about 2-3 minutes after starting the car, the TC, ABS, and BRAKE warning lights came on. The Nav screen also kept restarting during the drive, about every 5 minutes. The headlights would intermittently get dim then brighten up again, not necessarily at the same time as the Nav screen reboots. No issues with driving that I could tell, and no issues with the stereo or AC systems. Car only has suspension mods, axle back exhaust, and a high flow air filter, which have been on for a while now. Fluid levels are all good. ABS fuse is good. Appreciate any ideas and help! Link to comment Share on other sites More sharing options...
relative4 Posted November 29, 2018 Share Posted November 29, 2018 I would start by cleaning the battery terminals. Link to comment Share on other sites More sharing options...
Paul1017 Posted November 29, 2018 Author Share Posted November 29, 2018 Was able to pull an ABS C0052 error code. 'Motor System Malfunction', though I don't really know what that means Link to comment Share on other sites More sharing options...
Paul1017 Posted November 29, 2018 Author Share Posted November 29, 2018 Cleaned the battery terminals. Turns out the negative side terminal is also a bit too small somehow. Went for a drive after, and the warning lights are gone and no more flickering of the Nav screen or headlights. However, I reread the codes, and now there are three for ABS-- C0071, C0052, and C0042. Link to comment Share on other sites More sharing options...
apexi Posted November 29, 2018 Share Posted November 29, 2018 I wonder if you've got this black plastic piece inside the negative terminal that limits how tight it can go. Not the best picture attached, but only one I can find. I had to remove that years ago to get the negative terminal to fit aftermarket batteries tightly. One of those codes seems to be from low voltage, I wonder if they're all just from things going wonky due to low battery voltage. Link to comment Share on other sites More sharing options...
JmP6889928 Posted November 29, 2018 Share Posted November 29, 2018 Motor system malfunction could be the ABS controller itself. If you have intermittent voltage, it could make it read on again/off again and remember, this controller is designed to pulse the system. I would put a solid load test on the battery first, and if it passes, do a very slow recharge, remove the black spacer apexi shows, tighten everything down after a thorough cleaning and then try again. Link to comment Share on other sites More sharing options...
Paul1017 Posted November 29, 2018 Author Share Posted November 29, 2018 I did have that plastic spacer. Took it off this morning. Warning lights are gone, and everything seems back to normal, but the codes are still there when I read them in the dash. OBDII reader doesn't find any codes. Does the internal reader take some time to reset? The car didn't complete a drive cycle yet since unplugging the battery Link to comment Share on other sites More sharing options...
gimpydingo Posted November 29, 2018 Share Posted November 29, 2018 The codes will be there for 3 cycles I believe, someone correct me if I am wrong. You can always do the battery reset again. Link to comment Share on other sites More sharing options...
Paul1017 Posted November 30, 2018 Author Share Posted November 30, 2018 Thanks for the help. Warning lights seem to be staying away, but codes are still in the system. I'll check again in a week or so and report back. Link to comment Share on other sites More sharing options...
JmP6889928 Posted December 1, 2018 Share Posted December 1, 2018 You'll need someone with a GeniSYS or Snap-On scanner to go in and clear the codes. Find a competent local garage and pay them a few bucks to go in and remove the codes and then drive it for a week or two and check again. A regular code reader won't have access to any of the drivetrain codes. Link to comment Share on other sites More sharing options...
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