[V8] A8 trans problem

[Ed Kellock]

What are the possible causes for an A8 trans that will only go in 4th gear
as described here...
 
http://cgi.ebay.com/ebaymotors/97-Audi-V8-Quatro-/200606177595?pt=US_Cars_Tr
ucks
<http://cgi.ebay.com/ebaymotors/97-Audi-V8-Quatro-/200606177595?pt=US_Cars_T
rucks&hash=item2eb50f593b> &hash=item2eb50f593b
 
Is it largely the same situation as for the V8s?  My first thought is fluid
level, as I cured limp mode in my 92 parts car by draining the pan and
refilling with 4 quarts ATF.
 
Every once in a while, a short wheelbase A8 catches my eye and I think I can
start to see into the future.  I think they look especially wonderful in
Cashmere (dark grey metallic).
 
Ed