FixVault

Disconnect Procedures

NOTE: Numbers and letters in text refer to numbers and letters in figures.
  1. On vehicles not equipped with TELE AID, go to step  5 . Vehicles equipped with TELE AID, switch TELE AID into service mode by turning ignition ON.
  2. Turn ON telephone and enter code "*#4610#" on handset.
  3. Confirm that "No Telematics Service" appears on handset with okay.
  4. Turn OFF handset.
  5. Turn OFF ignition.
  6. Open hood and open snap fasteners (1) on dust filter housing. See Fig 1 .
  7. Remove dust filter housing (2) exposing battery.
  8. If not using quiescent current retention unit, go to step  14 . If using quiescent current retention unit, go to next step.
  9. Connect quiescent current retention unit by switching on quiescent current retention unit (7) and then first connecting positive terminal (8) and negative terminal (9) of retention unit to positive cable and battery ground (W10). See Fig 2 .
  10. On vehicles equipped with TELE AID, remove luggage compartment cargo anchoring lugs and remove floor paneling.
  11. Remove screws (1). See Fig 3 .
  12. Dismantle cover from TELE AID control module (A35/8).
  13. Disconnect connection coupling for back up battery and remove back up battery.
  14. Disconnect negative battery cable (1) and insulate terminal. See Fig 4 .
Fig 1: Removing Dust Filter Housing
G00315155Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Fig 2: Connecting Quiescent Current Retention Unit
G00284772Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Fig 3: Removing Emergency Call System Battery
G00315156Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Fig 4: Disconnecting Ground Lead From Battery
G00315157Courtesy of MERCEDES-BENZ OF NORTH AMERICA.