Hello people, so slowly I get more problems with my vehicle. When I’m gasting in the cold start I have a loud buzz for about 15min. Speak whenever I give gas, then it hums. This noise is much smaller after about 15min or almost no more to hear. Wodran can be there? It seems to me that it has something to do with the temperature. I was in the workshop a short time ago, because the exhaust lamp in the amatur board started to glow. Here it was found that the cat is probably defective. Meanwhile I drove 150km and the lamp has not yet turned on. Do the sounds have something to do with it? LG Markus