SL/R230: COMAND or Battery Problem?
Lately when starting up my '06 SL500, the COMAND does not power up and the words "please wait" appear in the right multifunction display window. After 3-5 minutes, the display changes to "----", and I can see the COMAND screen changing appearance as if it were booting up. After another 3-4 minutes, the right display changes to "off" and the COMAND is now ready for use. I had the the consumer battery tested and the report was all OK. After engine start, the total inop time period for the COMAND varies from a high of around 8 minutes to a low of 5 seconds to fully power up; more often it's around 3-5 minutes, but the sequence of messages in the display window is always the same whenever starting up my SL. What do these symptoms tell you? Thanks



An electrical system failure can cause a complete command system failure. This happened to me last year on the 05 SL. The dealer just had to reinstall the system software to fix it. If this happened it would be obvious, the entire system was inoperable.






