Bob Weir explored this on a 1994 E320 wagon. If I recall the pod is accessible from the passenger side of the dash. THere was also an issue with a vac line going throiugh the firewall wearing out.

Search on Bob's posts.

__________________
Brian G.

1994 E320 Wagon with many warts SOLD
1995 E320 Wagon with a beauty mark or two FOR SALE