The new GLE is a sophisticated beast to maintain and one observation made thus far was the transmission return line
In these newer vehicles, there is no easy way to service the transmission and the GLE is no different.
The return line from radiator to transmission have lines that are crimped (much like the AC hoses) with overengineering & non-serviceability being their moto.
Personally dislike dropping the pan ever and wanted to know if the return line could be spliced and a coupler put for flushing.
2018 MB GLE350
2011 Lexus ES350
2006 Toyota Highlander 4WD