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Discussion Starter #1
anyone have the instructions to increase the volatge on the 2012 passat headlights

p.s. i have the Vag Con cable.

thanks in advance
 

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Steps from COLORADODRIVER

Using Ross-Tech cable and latest VCDS software:

09- Central Elect. Long Coding Helper Byte 19 Bit 0-3 (Pull Down Choice 08 for 13.0 volts for headlamps)

----------------------While there, suggest: Byte 19 Bit 4-7 (Pull Down Choice 80 for tail lights 13.0 volts)

Note: Could have raised the voltage higher, but wanted to stay under the 13.2 volts rating of the bulbs.
 

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You can also increase to 13.6V for both without turning off the bulb light extender. Did this from 13.0V and noticed a much bigger jump that from the stock setting (12.8V-13.0V).
 
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