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Discussion Starter · #1 ·
Yesterday I changed out all stock bulbs on tail to led bulbs .. I read it in other tread about it throwing code.. Overboost causes asc light to come on.. What else causes it?? What should I check?
 

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Discussion Starter · #3 ·
So the light shows up and stays on when you start the car? This started happening after you installed the LED's? Where did you get the LED's from?

Correct on the over-boost, if the car see's over 30psi that light/warning will come up and kill parts of the AWD (not sure which parts).
I just checked it with ap.. Code ecu u0167 came up..
 

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Discussion Starter · #5 ·
Is your AP firmware up to date?

Have you tried uninstalling the AP and reinstalling?

What happens if you delete the code? Does it come back right away?

That code is;
U0167 Lost Communication With Vehicle Immobilizer Control Module
I started car back up.. Asc warning light wasn't there just code 0167.. I cleared it .. Did u get that code b4?
 

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Everything is related to the CAN bus, having lights that draw less current than the ECU expects causes all sorts of weird things. Replacing your brake lights with leds will cause the cruise control to not work. You need LEDs with build in load resistors or add em yourself, they are quite readily available
 

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I suspect the ecu is expecting to see a certain amount of voltage over the wires so that it knows the brake lights are working. When using led bulbs, it is not pulling as much and the ecu believes that the circuit is not working thus the light.
 
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