Special Tools

Tool number and name	Supersession	Application
MB991958 Scan tool (M.U.T.-III sub assembly) MB991824 Vehicle communication interface (V.C.I.) MB991827 M.U.T.-III USB cable MB991910 M.U.T.-III main harness A (Vehicles with CAN communication system) MB991911 M.U.T.-III main harness B (Vehicles without CAN communication system) MB991914 M.U.T.-III main harness C (for Chrysler models only) MB991825 M.U.T.-III adapter harness MB991826 M.U.T.-III trigger harness	MB991824-KIT NOTE: MB991826 M.U.T.-III Trigger Harness is not necessary when pushing V.C.I. ENTER key.	CAUTION: For vehicles with CAN communication, use M.U.T.-III main harness A to send simulated vehicle speed. If you connect M.U.T.-III main harness B or C instead, the CAN communication does not function correctly. Reading diagnostic trouble codes
MB992744 Vehicle communication interface-Lite (V.C.I.-Lite) MB992745 V.C.I.-Lite main harness A (for vehicles with CAN communication) MB992746 V.C.I.-Lite main harness B (for vehicles without CAN communication) MB992747 V.C.I.-Lite USB cable short MB992748 V.C.I.-Lite USB cable long	-	Reading diagnostic trouble codes
MB991223 MB991219 MB991220 MB991221 MB991222 Harness set Test harness LED harness LED harness adaptor Probe	General service tools	Checking the continuity and measuring the voltage at the harness connector
MB992006 Extra fine probe	General service tool	Continuity check and voltage measurement at harness wire or connector for loose, corroded or damaged terminals, or terminals pushed back in the connector.
MB991871 LLC changer	General service tool	Coolant refilling
MB992042 Water temperature sensor wrench	MB992042-01	Engine coolant temperature sensor removal and installation
MD998412 Guide	-	Thermostat housing and gasket installation