Picked this info from another list I'm on:

As some of you may recall, our E300DT had a Mass Air Flow Sensor (MAF or
>> MAS) failure some time back. After some research it appeared that there
>> is a newer MAF used in the CDI motors. The VW TDI community seems firmly
>> convinced that this part is much more reliable than the original Bosch
>> part. The Bosch part is also nearly twice the price.
>>
>> Throwing caution to the wind, I blew $73+shipping on MB part# A6110940048.
>> It installs perfectly in place of the original sensor, though a security
>> torx bit is needed.

I may be due for it on my E300 too. The check engine light just came on this week, but I haven't pulled the code or investigated it yet. Anyone else try this solution? Is there a "how to" on this job on this list? I tried a search and got lots of hits, but didn't come across the procedure. Is it so easy of a fix that a write up/pictures aren't needed?

Len
'99 E300TD 72,000 miles