Remove/install coolant temperature sensor - AR15.60-P-2711MR

ENGINE 274 in MODEL 172, 204, 207, 212, 218 

Shown on model 204.003 

Fig 1: Identifying Coolant Temperature Sensor Remove/Install Components - Shown On Model 204.003

Courtesy of MERCEDES-BENZ USA

	Remove/install
1	Remove lower engine compartment paneling	Remove/install bottom engine compartment paneling Engine 274 in model 172	AR61.20-P-1105W
		Engine 274 in model 204.9	AR61.20-P-1105CY
		Engine 274 in model 204.0/2/3, 207, 212, 218	AR61.20-P-1105EW
2	Drain off coolant		AR20.00-P-1142MR
3	Detach steering coupling from steering shaft	Engine 274.9 in model 212 with code 924 (Bivalent natural gas drive)	AR46.10-P-8000EW
4	Remove starter	Engine 274.9 in model 212 with code 924 (Bivalent natural gas drive)	AR15.30-P-7100MRC
5	Disconnect Electrical connection at coolant temperature sensor (B11/4)
6	Detach coolant temperature sensor (B11/4) at cylinder head and remove bracket (1)	To do this, remove screw/bolt (1s). Replace sealing ring.
		Bolt, coolant temperature sensor to cylinder head	*BA15.60-P-1001-01E
7	Install in the reverse order
8	Pour in coolant and ventilate engine cooling system		AR20.00-P-1142-04A
	Check
9	Check engine cooling system for leaktightness		AR20.00-P-1010MR
	Risk of accident  from vehicle starting off by itself when engine running. Risk of injury  (bruises and burns) resulting from working on the engine while it is being started or when it is running.	Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A
10	Perform an engine test run and check engine for leaktightness