i fitted some LED Sidelight on my A4 and i should left it but i didn't thing it was brighter enough so i decide it to take them off and all of a sudden one of the light just went so i put a different bulb on and it still doesn't work, i've checked that the socket is not receiving any power, any ideas?

 

Check you fuses. Sounds like one popped.

 

i've checked the fuse and it does come on for like 2 second and turns it self off after! it might be the wires don't know?

 

Not sure why it would light for a few seconds and then go out. Must have a short somewhere or the plug somehow got damaged.

 

i've heard alot of audi and BMW doesn't like LED lights, i found out that when the engine is on both light working fine but when the engine is off then the driver side goes off?WHYYYYYYY

 

Are they Canbus LED lights or standard LED? Because that may be your problem right there, Audi's don't like cheap standard LED bulbs, just the more expensive canbus compatible ones from my experience selling them.