Due to the location of the Engine ECU being directly under the Scuttle Panel, in due time the drains get blocked with dirt, leaves and moss, which prevents water from draining correctly. Over multiple rain falls, the area gets filled and the ECU gets submerged in water.

 

Prevention of Water

To prevent your ECU from failing due to water ingress, regularly check the area is clean and the drains are clear.

A few modifications can be done to allow more water to escape easily to prevent water retention and the ECU to be placed slightly higher to allow the sealed edges of the ECU to be slightly higher thus preventing the water to seep into the ECU.

M6 Nuts placed on the 2 rear Studs to Raise the ECU slightly.

Wiring harness raised to allow enough clearance underneath so that leaves and debris do not obstruct rain water from easily flowing to the drain holes.

Ensure the ECU area is kept clean and clear to prevent your ECU from experiencing water ingress.

Ensure the middle scuttle drain is cut in half lengthways where the arrow is shown on the right hand photo.