ASC service required SOLVED!
#1
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Join Date: Apr 2012
Location: Ft. Carson, CO
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I have had the ASC service required light on for about 6 months now. It only happened when my headlights were on so I knew it was something in the electrical. I had been troubleshooting this for a while and finally just gave up. Yesterday a brake light went out so I decided to just replace all the lights in the back while I was at it. I decided to use regular bulbs instead of LED this time and POW. Turns out the LED bulbs in my tail lights where the cause. The reason why I didn't suspect the LEDs to begin with is I have been running them for years no problem and they were all working. Thought I would share. Also I found out if you don't take the resistors off for regular bulbs they wont function properly.
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