Are you sure it is the main ECU? If you were in water that deep it may be a sensor shorted out. What else are you experiencing?So i got water damage on my ecu and now it won't shift into overdrive. The dealership says i need a new ecu for 1088$. My question is can a replace my 2010 ecu from an earlier model such as an 07? or is the 2007 fj ecu not compatible with the 2010 model?