VCDS told me my converter wasn’t locking up as it supposed to do. This is one of the well known problems with the RS6 C5. So i had two options, swap the converter, or try flushing the trans first. We tried with the flush option, light didn’t come on for ~ 100km’s but at...
Check air filters.A clogged air filter might be the reason behind limp mode because it activates when the engine doesn’t get sufficient air. Cleaning or replacing these filters might be the only thing you need to do to take your car out of limp mode. ...