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Remove/Install Coolant Temperature Sensor - AR15.60-P-2712MRD

Engine 274.9 in model 213 

Engine 274.9 in model 238 

Fig 1: Coolant Temperature Sensor Components Location - Engine 274.9 In Model 213
G13744934Courtesy of MERCEDES-BENZ USA
WARNING Risk of injury  to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning from swallowing coolant. Do not open cooling system unless coolant temperature is below 90°C. Open cap slowly and release the pressure. Do not pour coolant into beverage containers.
Wear protective gloves, protective clothing and safety glasses.
AS20.00-Z-0001-01A
REMOVINGINSTALLING Remove/install     
1 Remove engine compartment paneling   AR61.20-P-1105LWE
    INSTALLATION IMPORTANT Only install lower engine compartment paneling after leak test.  
2 Drain off coolant   AR20.00-P-1142OLC
3 Release and disconnect electrical connection on coolant temperature sensor (B11/4)    
4 Remove screw/bolt (1s) TORQUE SPECIFICATION Screw, coolant temperature sensor to cylinder head/crankcase *BA15.60-P-1001-01E 
5 Remove coolant temperature sensor (B11/4) with holder (1) INSTALLATION IMPORTANT Replace sealing ring.  
6 Install in the reverse order    
WARNING 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
7 Perform an engine test run and check engine for proper operation and leaktightness    
8 Install lower engine compartment paneling   AR61.20-P-1105LWE
TEMPERATURE SENSOR

Number Designation Engine 274
BA15.60-P-1001-01E Screw, coolant temperature sensor to cylinder head/crankcase Nm 9