Did the dealer scan it for codes or look at the adaptation values?

If so, they ought to have been able to tell you what was wrong.

The dip stick is a tool. The dimensions of the end of it have been posted previously so that you could make your own. Make certain it is CLEAN and that you get a new lock for the cap or it WILL vibrate off.

__________________
Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)