Coolant level switch (242)
| Coolant level switch (242) | 
| Location | 
Coolant level switch (242)
| Main task | 
To warn of low coolant level.
| Type | 
Magnetic reed actuated by a magnet situated in a float.
| Connection | 
| Pin No. | Signal type | Description | 
| 1 | Signal | Connects to BCM pin (A)13 in (K78) | 
| 2 | Ground | Connects to grounding point G33S | 
 
    
    | Function | 
The float will drop when the coolant level is low so that the ring magnet acts on the reed and closes the circuit.

 
		