ABS, Anti-skid and Brake light - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 5 Days Ago
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ABS, Anti-skid and Brake light

Working on a 2010 Ranger Sport 4x4 for a friend...battery was totally dead in the morning after being driven previous day. He connected battery charger with 200 amp boost and started truck. Runs fine, charging at 14V and battery reads 12.2V static. My scan tool showed 2 codes: U0028 and B1317 which I erased but ABS, ANTI-SKID and BRAKE lights stay on when running. I found a vague reference to “excess battery voltage from jump-start” in a Google search. Anyone know how to make these lights go out?
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Battery is toast, 12.3v after sitting overnight is the very minimum voltage and time to shop for battery sale, 12.2v is a done battery.
New battery is 12.8-13.0volts
5 year old battery will be about 12.4 or .5
6 to 7 years they will be at 12.3 or lower and done, chemicals are all used up

Yes, you should disconnect battery when charging unless its an emergency, i.e. B1317

Check brake fluid level, low fluid or fluid sensor on master can cause all 3 lights to be on.
Make sure E-brake is fully release, pull pedal up while holding the release, could not be returning to the top.

U0028 was most likely from the lower battery power
Battery voltage drops about 2 volts when starter motor is activated, if voltage gets down to under 9.5volts you can get a "brown out" effect in the computer and other electrical systems.
U0028 means the data passing through the system was corrupted momentarily, its a pretty general code so I would say caused by low voltage, for now
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Thank you RonD for the response. Battery is only about a year and 1/2 old and passes a load test with no problem. Starts the truck just fine every time even after sitting overnight. I have no idea why it was dead the one morning when all this started.
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Retest it, at rest voltage after sitting over night, over 6 hours, should be 12.6volts or higher if battery is only 18 months old
I have had "new" batteries go bad within a few months, not as unusual as you might think.

If you want to do your own "load test"
Unplug coil pack, so no spark, or pull fuel pump relay or fuse, so no gasoline
Put Volt meter on battery and crank engine over, about 20seconds at a time, do it 2 or 3 times
If it goes below 10volts its marginal, 9.5volts is a bad battery

This also tests starter motor AMP Draw, starter motors and battery cables do wear out, so battery needs to provide too many amps to start engine, this just wears out a battery much faster
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