cycle the ignition on and off. when it detects a blown bulb it turns off the power to that circuit, when a new bulb is fitted it usually doesn't work until the ignition is cycled, then it rechecks the circuit, see's it is now OK and then return's the voltage.... If not then yeh, possible blown fuse.....VDUB... (to fit LED's without internal resistors you usually have to deactivate "bulb monitor" with VCDS as the LED doesn't draw enough current and acts like a blown bulb)
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