Temperature Sensor (Gauge): Service and Repair

Removal
1. Disconnect negative battery terminal.
2. Drain engine cooling system.

WARNING: NEVER REMOVE THE RADIATOR CAP UNDER ANY CIRCUMSTANCES WHILE THE ENGINE IS OPERATING. FAILURE TO FOLLOW THESE INSTRUCTIONS COULD RESULT IN SERIOUS PERSONAL INJURY FROM HOT COOLANT OR STEAM BLOW OUT (AND/OR DAMAGE TO THE COOLING SYSTEM OR ENGINE). SWITCH OFF THE ENGINE AND WAIT UNTIL IT HAS COOLED. EVEN THEN, USE EXTREME CARE WHEN REMOVING THE CAP FROM A HOT RADIATOR. WRAP A THICK CLOTH AROUND THE CAP AND TURN IT SLOWLY TO THE FIRST STOP STEP BACK WHILE THE PRESSURE IS RELEASED FROM THE COOLING SYSTEM. WHEN CERTAIN ALL THE PRESSURE HAS BEEN RELEASED, PRESS DOWN ON THE CAP WITH A CLOTH, TURN AND REMOVE IT.

3. Disconnect electrical connector to sending unit.
4. Loosen and remove sending unit.

Installation
1. Apply Teflon tape or Pipe sealant with Teflon(r) D8AZ-19554-A (ESG-M4G194-A) or equivalent to threads of sending unit.
2. Install sending unit. Tighten to 16-24 Nm (12-17 lb-ft).
3. Connect electrical connector to sending unit.
4. Fill and bleed cooling system.
5. Connect negative battery terminal.
6. Start engine and check for coolant leaks.