Hello, I'm sharing an article with the solution to a fairly common problem in VAG group TSI engines. It's a timing chain stretching issue, which causes a loss of synchronization between the crankshaft and camshafts. When this happens, in addition to other symptoms, the engine malfunction indicator light comes on, and there are noises when starting the engine, as well as some difficulty starting it. All the details of the troubleshooting and repair process are available at this link:
www.blogmecanicos.com/2014/02/problema-e...cion-en-motores.html
I hope you find it useful.