Forum Discussion
dougrainer
Mar 23, 2018Nomad
The most common cause of failure of a water pump latching relay is water corrosion. Most OEM's install the relay in the water bay area and anytime you get a leak from the water system or even just the humidity from the water bay will cause the relay to corrode and fail. Cleaning the contacs does not fix the relay. Instead of cleaning, take it apart and look at the circuit board. You will find tell tale corrosion and cleaning just temporarily makes it work. Doug
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