Mercedes C220 CDI Automatic, about one year old, 30.000 kms.

After one minute of driving there is a sudden power loss. Max speed in D:
about 125 km/h, max RPM = about 2750. Switching to 4 or 3 increases the RPM
number for one or two seconds. Than there is a slow down again. No engine
power, no acceleration.
My Mercedes dealer says it happens sometimes: "Just stop the car and wait
for some minutes: it will reprogram itself". Tried it, did not work.

What causes this?

TIA

--
André van Deun
FileMaker Solutions Associate
AVD Computerintegratie BVBA
avd@kmonet.be