Dealer Engineering Mode

PS330   SUBJECT: AVN 4.0 UVO eServices DEALER ENGINEERING MODE   When troubleshooting an AVN 4.0 head-unit, follow the procedure outlined below to access the Dealer Engineering mode and perform various eServices related maintenance functions.       “TMU, OK!” – “BT Connection, OK!” – “USB Connection, OK!” – “eServices Check, OK!” Note: The message … Read more