FixVault

Remove/Install Coolant Temperature Sensor - AR15.60-S-2715EG

Model 447, 448 with engine 274 

Fig 1: Coolant Temperature Sensor Components Location - Model 447 With Engine 274
G16481929DANGERWARNINGREMOVINGINSTALLINGIMPORTANTTORQUE SPECIFICATIONTORQUE SPECIFICATIONIMPORTANTINSTALLATION IMPORTANTREFER TO SELF-DIAGNOSTIC SYSTEMSIMPORTANTINSPECTWARNINGIMPORTANTCourtesy of MERCEDES-BENZ USA
DANGER Risk of death  caused by vehicle slipping or toppling off of the lifting platform. Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer. AS00.00-Z-0010-01A
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 overpressure. Do not pour coolant into beverage containers.
Wear protective gloves, protective clothing and safety glasses.
AS20.00-Z-0001-01A
REMOVINGINSTALLING Remove/install     
1 Drain off coolant   AR20.00-S-1140E
2 Disconnect electrical connection (1)    
3 Remove coolant line (2) IMPORTANT Remove screw/bolt (3) to do this.
TORQUE SPECIFICATION M6
*BA00.10-Z-1002-01KOA 
4 Remove screw/bolt (4) TORQUE SPECIFICATION Screw/bolt, coolant temperature sensor to crankcase *BA07.04-Z-1004-01KON 
5 Remove coolant temperature sensor (B11/21) IMPORTANT Remove coolant temperature sensor (B11/21) together with bracket (5).
INSTALLATION IMPORTANT Replace sealing ring (6).
 
6 Install in the reverse order    
7 Read out fault memory with diagnostic system    
REFER TO SELF-DIAGNOSTIC SYSTEMS   IMPORTANT Clear existing errors. AD00.00-S-2000-04E
INSPECT Check     
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
8 Check for leaktightness with engine running IMPORTANT Visual inspection only.  
HEADLESS SCREWS/BOLTS: SCREWS/BOLTS AND NUTS, COARSE-PITCH THREAD

Number Designation 8.8 10.9
BA00.10-Z-1002-01KOA M6 Galvanized Nm 9 13
Phosphated Nm 9 12
HEADLESS SCREWS/BOLTS: SCREWS/BOLTS AND NUTS, COARSE-PITCH THREAD

Number Designation 12.9
BA00.10-Z-1002-01KOA M6 Galvanized Nm 16
Phosphated Nm 14
SENSORS

Number Designation Engine 274 in model 447 Engine 274 in model 448
BA07.04-Z-1004-01KON Screw/bolt, coolant temperature sensor to crankcase Nm 9 9