My car has an AdBlue fluid sensor that isn't working properly. It's an ultrasonic sensor and the car is reading 0mm of fluid from the sensor (out of maximum 245mm), despite the tank being full. A replacement part is only deliverable in July or so, which basically turns my car into a brick until then. My only hope is somehow tricking the sensor/car into reading the tank as being full.
I don't know exactly what kind of output the sensor is producing, but looking online at various ultrasonic sensors, they all seem to output 4-20mA.
Here is the wiring diagram for the sensor:
As you can see, the sensor uses 3 wires - positive, negative and signal.
My question is, how would I go about using the signal wire to send back "tank full" signal to the car?
Any help or tips are much appreciated, thank you!
Edit: after doing some more research, I've found that the module in question is Bosch Denoxtronic 5.
I don't know exactly what kind of output the sensor is producing, but looking online at various ultrasonic sensors, they all seem to output 4-20mA.
Here is the wiring diagram for the sensor:
As you can see, the sensor uses 3 wires - positive, negative and signal.
My question is, how would I go about using the signal wire to send back "tank full" signal to the car?
Any help or tips are much appreciated, thank you!
Edit: after doing some more research, I've found that the module in question is Bosch Denoxtronic 5.
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