Hi, I'm into my 2nd month of Mercedes ownership, having purchased a '07 SL550 with AMG option. So far have serviced the AC (compressor/drier/expansion valve) and it is blowing nice and cold. Found the reason for a white ABC malfunction message - disconnected wire at the ABC pump suction restrictor valve. (whew!). Have an ABC flush planned for next weekend. It seems that the Incredible Hulk installed the wheels. I am trying every trick I know to break the lug nuts loose without breaking a wheel stud. Everything else is working properly. What a great car!

 

Welcome to the forum and congrats on the new ride! Let us know if you have any tech related questions and if we can assist with any future part needs. Have you tried PB Blaster or something similar for the lug nuts?

 

Thanks. Yes, dosed them twice over a 24 hour period. Still working on it. It's not urgent now, but could get that way if I have a flat. I don't carry my 36 inch breaker bar in the tool roll
I know that will get the wheel off, but might snap the lugs in the process, so one step at a time. Heat will be the last resort.