Hi all! Story so far is that I contacted the previous owner of my SL55 to get the Keyless Go cards from him, then went to the dealer to sort it all out. I took one DAS key (normal IR remote key) and the two Keyless cards. Long story short is that I left without any working KeylessGo function. The Star Diagnosis showed EIS Keytrack info as follows: Track 1 Disabled Track 2 Enabled - this is assigned to the DAS key Track 3 Disbaled Track 4 Disabled Track 5 Enabled Track 6 Enabled Track 7 Enabled Track 8 Enabled I assume that the KeylessGo cards I had were assigned to tracks 3&4 but were disabled by the finance company after the previous owner.. My question is, once a track has been disbaled, can it be re-enabled?? We couldn't see how to do this. Secondly, we ordered a new KeylessGo card on a "999" part number, which MBUK should assign to the next available track (track 5?) that arrived this morning - anybody have any ideashow to program the car to recognise the new card?