Battery sensor component description - GF54.10-P-2100CW

MODEL 204.0/2 up to Model Year 8 

Location 

The battery sensor is located at the negative terminal of the on-board electrical system battery (G1).

The battery sensor and on-board electrical system battery on vehicles with a gasoline engine are located in the engine compartment, on vehicles with a diesel engine in the trunk.

Shown on model 204.0 with gasoline engine 

Task 

The battery sensor provides the following on-board electrical system battery (G1) values to the rear SAM control unit with fuse and relay module (N10/2) over the on-board electrical system LIN:

• Voltage
• Interior temperature

Function 

The battery sensor is connected in series with the negative terminal of the on-board electrical system battery and the ground point. It records the voltage of the on-board electrical system battery and the on-board electrical system's power consumption.

These measurements are used by the battery sensor to calculate the internal resistance of the on-board electrical system battery. A temperature sensor integrated into the battery sensor measures the temperature at the negative terminal. This is then used to calculate the inside temperature of the on-board electrical system battery.