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

Engine 256.9 in model 223 

Fig 1: Coolant Temperature Sensor Components Location - Model 223 With Engine 256.9

Courtesy of MERCEDES-BENZ USA

	Risk of injury  caused by scraping or cutting body parts on sharp vehicle parts	Always wear protective gloves when working on or near sharp and non-deburred vehicle parts. Deburr repair panels.	AS00.00-Z-0017-01A
	Risk of injury  . Skin or eye injuries may result when handling hot or glowing objects.	Wear protective gloves, protective clothing and safety glasses, if necessary.	AS00.00-Z-0002-01A
	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	Notes on avoiding damage through contamination and foreign objects		AH00.00-P-5000-01A
Topical note	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Remove/install
1	Remove upper engine cover.
			AP01.10-P-2405-01OB
2	Drain off coolant.		AR20.00-P-1142SB
3	Release electrical connector (1) and disconnect.
4	Remove screw (2).	Screw, temperature sensor bracket to cylinder head	*BA15.60-P-1001-02MRT
5	Remove coolant temperature sensor (B11/16).	: Replace O-ring. Assembly tool	Fig 2
6	Install in the reverse order.

TEMPERATURE SENSOR

Number	Designation		Engine 256
BA15.60-P-1001-02MRT	Screw, temperature sensor bracket to cylinder head	Nm	8

Fig 2: Identifying Assembly Tool (000 589 93 63 00)

Courtesy of MERCEDES-BENZ USA