Hi.My name is John and I m new here. I bought two days ago an Audi a4 2.5 tdi quattro 04 reg.The owner has been quite honest and told me about the bad parts of the car but the price was good and I was dreaming to own a car like this for a very loooooong time so I bought it. Today I changed the oil and all filters as oil filter,air,diesel,polen and add a Metabond in the engine with the oil.Saturday I m booked for timing belt so all good until now.The problem that I have is glow plug light comes on intermittent but with no lose of power and if I turn the engine off then restart the light goes away. Can anyone please help me with some advice and maybe direct me to a good mechanic that knows about Audi s?I live in Edgware London ha8. The break lights are working fine but I also notice that when I press the Esp button nothing happens and the light for esp does not comes on the dashboard. Thank you for your help in advance.