HELP! ABS warning sensor turns on after connecting LED bulbs

**Banuyo** · January 22nd, 2010 03:46 PM

Hi, i just installed a pair of LED brakelights for my 2002 Mitsu GSR. Now, after 10 min of driving, my ABS sensor always starts to turn on. I know someone who experienced the same thing. i was thinking since LED's consume less electricity, the ABS is unable to detect the presence of the brake lights. Is there a way to rewire or at least "fool" the system? will appreciate your inputs

**bambino** · January 22nd, 2010 10:57 PM

first thing to do is to get it scanned and go from there .

**xda2jojo** · January 23rd, 2010 03:13 AM

Originally Posted by Banuyo

Hi, i just installed a pair of LED brakelights for my 2002 Mitsu GSR. Now, after 10 min of driving, my ABS sensor always starts to turn on. I know someone who experienced the same thing. i was thinking since LED's consume less electricity, the ABS is unable to detect the presence of the brake lights. Is there a way to rewire or at least "fool" the system? will appreciate your inputs

1.) For checking, replace the LED to Stock bulb if still have the probs.
2.) Kung ang LED ang dahilan, then put a dummy load, same resistance sa stock bulb.

**sakura88** · January 23rd, 2010 10:45 AM

yes I also think that you should replace the LED bulbs if it still in a same circumstance,

**mda** · January 23rd, 2010 11:47 AM

Did you disconnect the battery while installing the brakelights? Something may have shorted during installation.

**Banuyo** · January 23rd, 2010 01:23 PM

Originally Posted by xda2jojo

1.) For checking, replace the LED to Stock bulb if still have the probs.
2.) Kung ang LED ang dahilan, then put a dummy load, same resistance sa stock bulb.

1- ABS works fine with stock bulbs
2- im pretty sure its the LED, may i ask how i can put a dummy load?

**oj88** · January 23rd, 2010 03:53 PM

The system senses if any of your stop lamps are busted. If the circuit is open (ie. busted bulb or the bulbs are disconnected), the ABS warning indicator lights up. It does so by measuring the current drawn by the bulbs. Stock filament bulbs are either 21W or 25W usually. Compared to the stock bulbs, LEDs have very small power requirements, most likely not enough for the system to sense their presence. That's why the system thinks that the bulb is either busted or missing, hence the ABS warning.

**Banuyo** · January 25th, 2010 12:53 PM

Originally Posted by oj88

The system senses if any of your stop lamps are busted. If the circuit is open (ie. busted bulb or the bulbs are disconnected), the ABS warning indicator lights up. It does so by measuring the current drawn by the bulbs. Stock filament bulbs are either 21W or 25W usually. Compared to the stock bulbs, LEDs have very small power requirements, most likely not enough for the system to sense their presence. That's why the system thinks that the bulb is either busted or missing, hence the ABS warning.

I definitely agree with you on that one. Is there any way to fool the system tho? like tapping in a set of filaments just to keep the ABS functioning?