Worked great when I fitted my winter wheels on my 17 RS! However, he has no real instructions. On the web I found that I used the danger button 6 times which didn't work for the correct training mode. Turns out you have to switch ignitions and hit the brake pedal a few times to get into the new TPMS learning mode. 100% recommend this tool as it only took about 1 minute to train all my sensors. Best regards, oh and it arrived within 2 days so thanks for that too!