Coolant level switch (242)
| Coolant level switch (242) | 
| Location | 
Coolant level switch (242)
| Main task | 
To warn of low coolant level.
| Type | 
Magnetic tongue element actuated by a magnet housed in a float.
| Connection | 
| Pin no. | Signal type | Description | 
| 
        
         A
        
         | 
       
        
         Signal
        
         | 
       
        
         Connected to SID pin 28.
        
         | 
      
| 
        
         2
        
         | 
       
        
         Ground
        
         | 
       
        
         Connected to grounding point G40/42.
        
         | 
      
| Function | 
When the coolant level is low, the float sinks and the ring magnet actuates the tongue element, which closes the circuit.
