TB gone speedy

Just a suggestion but have you checked the fuse hasn't gone? I tried changing some interior lights a couple of months back and the following morning went to drive off and my steering weighed a ton (also aircon and horn strangely) changed one fuse (forget which one, sorry) and hey presto all working fine again. My A4 09 sline back to light as feather. I had Halfords telling me it was gonna be the pump.

Thank you Ed much appreciated that’s the kind of confident response I was looking for. Thank you Niedzial appreciate the input, may swing by my local MOT garage and get a feel for what they call “pass” and “fail” (I know from past experience some garages can be harsher on certain things or less bothered than others).

Good morning! First go at a forum post as I gave up finding the question I was looking to answer. As I lock my Audi A4 2009 s line I walk away and have the headlights, DRL and fog lights on. This is great but my big gripe is that the fog lights have that horrible yellow glow and I want to convert to LED or Xeon (whatever is whiter and brighter). Any advice on what to buy as to not bring up any error codes. Some sell just bulbs others (seen on u tube) convert with a whole wiring loom??? Any help is much Appreciated -Tom