How to Clean Your RV Holding Tank Sensors

The holding tank sensors on your RV are one of the most-important pieces of equipment on the entire rig. When these sensors work properly, they inform you when the tanks are getting full so you can drain them and clean them out as necessary. Of course, is the sensors are not functioning properly, you will struggle to know when the tanks are reaching capacity – and that is a problem that no RV owners wants to deal with while on vacation.

Rural asphalt road near fields in springtime. Calm polish countrysideSo, considering the importance of these sensors, it only makes sense to keep them clean in order to allow them to do their job properly. Follow the basic steps below and you should be able to keep this helpful piece of equipment working accurately for years to come.

Drain the Tank

Logically, this process starts by draining both your gray and black water tanks completely. Drain them out as you would any other time, making sure that they are fully drained before moving on to other steps. Even if you think they are mostly empty to begin with, go ahead and allow them to drain out as fully as possible in order to make this process work nicely.

Refilling Time

Now that the tanks are empty, you are going to refill them about a third of the way. However, you are going to be filling them only with clean water. This water is going to be part of what winds up cleaning off the sensors, so it is important that you use clean water straight from a tap (or another source).

Introducing the Soap

Obviously, you aren’t going to be able to climb into the tanks to clean the sensors yourself, so you are going to have to send some soap in for you to do the job. Add a small amount of dish detergent to both your toilet and to the kitchen sink. Somewhere around a half a cup of detergent should do the job. To send the soap into the tanks, dump another gallon of clean water down the sink and the toilet to carry the soap on through. When it arrives, the soapy water will mix with the water already in the tank to create a cleaning solution.

Wait It Out

To allow the soapy water that you have created to do its job, you are going to need to wait a couple hours. It is a great idea to perform this cleaning procedure right before you hit the road, as driving along will help to agitate the water and achieve a better clean. Once you reach your new destination, go ahead and drain the tanks again to complete the process.

Hopefully, you will now be left with clean holding tank sensors that can help you keep an accurate eye on the levels inside both your gray and black water tanks. In addition to the benefit of washing the sensors, this cleaning process will simply help you to clean the overall tanks as a whole as well – which is always a good thing.


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