Engine Block Heater: Service and Repair

Removal

CAUTION: Do not mix Standard (green) Coolant with Extended Life Coolant (orange).

1. Drain the engine cooling system.

2. WARNING: The electrical power to the air suspension system must be shut off prior to hoisting, jacking or towing an air suspension vehicle. This can be accomplished by turning off the air suspension switch located in the RH kick panel area. Failure to do so may result in unexpected inflation or deflation of the air springs which may result in shifting of the vehicle during these operations.

Raise and support the vehicle.





3. Disconnect the (A) block heater wiring from the (B) block heater.





4. Remove the block heater.

1 CAUTION: Do not loosen the screw more than necessary for removal.

Loosen the screw.
2 Twist and slide the block heater to release the retainer clip and remove. Discard the retainer clip.

Installation





1. NOTE: To ease installation, coat the block heater seal and the cylinder block hole with Motorcraft Premium Long Life Grease XG-1-C or equivalent meeting Ford specification ESA-M1C75-B.

NOTE: If equipped with air suspension, reactivate the system by turning on the air suspension switch.

Lower the vehicle.
Follow the removal procedure in reverse order.