How to get the Service 4wd light off - DodgeTalk : Dodge Car Forums, Dodge Truck Forums and Ram Forums
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post #1 of 5 Old 04-01-2019, 02:47 PM Thread Starter
PowerWagonBezzz
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How to get the Service 4wd light off

So I did the locker hardwire and the manual smart bar conversion on my 2005 Dodge Power Wagon, I should have done this sooner as it nice to have lockers in 4 high and also rear locker in 2wd. So my question is has anyone figured out a way to get the Service 4wd light out besides getting behind the instrument cluster and pulling the bulb out, I have been trying to read up on the wiring schematics to fool the light to turn off but no luck yet.
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post #2 of 5 Old 04-02-2019, 08:43 PM
guyonearth
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First off, there is no "bulb", it's an LED on a circuit board, more than likely. Short of taking it apart and painting it black, I'm not sure how you would defeat it.
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post #3 of 5 Old 04-03-2019, 02:30 AM Thread Starter
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Well damm Eh!!!
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post #4 of 5 Old 04-03-2019, 08:16 AM
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The warning light is doing what it is supposed to, which is indicating what the PCM sees as an error condition, caused by the modifications you made. Changing that interpretation, or even just turning off the indicator, would require modifying the PCM firmware, which is beyond the scope of most shops.
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post #5 of 5 Old 04-03-2019, 07:46 PM Thread Starter
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The main reason for going with the locker bypass was that the sensor in the rear locker was malfunctioning causing my service 4wd light to come on and off for the last six months, it also prevented my lockers staying locked when four wheeling and now I can hit all the harder obstacles on the trails which is more fun fun fun!!!
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