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Home >> Mercedes Benz >> 2021 >> GLS450 >> Repair and Diagnosis (Single Page) >> Engine Performance >> Engine Control Systems >> Electrical System - Engine - 167 Chassis >> Testing & Repair >> Remove/Install Coolant Temperature Sensor >> Remove/Install Coolant Temperature Sensor - AR15.60-P-2712MSC
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Remove/Install Coolant Temperature Sensor - AR15.60-P-2712MSC

Engine 256.9 In Model 167 

Fig 1: Coolant Temperature Sensor Components Location - Engine 256.9 In Model 167
G14790258Courtesy 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
Topical note  Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
REMOVINGINSTALLING Remove/install     
1 Remove upper Engine cover.   AR01.10-P-2405MSC
2 Drain off coolant.   AR20.00-P-1142MSC
3 Release and disconnect electrical connector o coolant temperature sensor (B11/4).    
4 Remove screw (2). TORQUE SPECIFICATION Screw, temperature sensor bracket to cylinder head *BA15.60-P-1001-02MRT 
5 Remove coolant temperature sensor (B11/4) with bracket.    
6 Install in the reverse order.    
7 Read out and delete fault memory.    
REFER TO SELF-DIAGNOSTIC SYSTEMS     AD00.00-P-2000-06ME
TEMPERATURE SENSOR

Number Designation Engine 256.9
BA15.60-P-1001-02MRT Screw, temperature sensor bracket to cylinder head Nm 8