new to group must gave the most unreliable and troublesome S type ever. Bought it new in 2002 and it has been nothing but trouble since. Many intermittent faults that are there one day and often gone the next although after 150,000 miles I have probably had enough and an contemplating scrapping it if i can't fix the latest round of faults. Hopefully someone in the forum can help. I have a rumbling sound at certain speeds, a bit like dring over a rough road surface or washboard, the running is sometimes lumpy, it currently has restricted performance and limp home mode and just noticed that the RH cat was glowing red hot....................