I beleive at least one member reported that he replaced the electronic mounts with solid units. Do a forum search.
The electronic mounts do not communicate back to the ECM so there should be no issues.
2005 SL AWD, Platinum
-OEM HID conversion & HID fogs
-OEM iPod interface
-Upgraded (non-Bose) speakers - Pioneer TS-A1702C & TS-G1643R
-Muth signal mirrors
-Valley Industries hitch and wiring harness
-Aluminum fuel tank shields