Engine control unit

[James]

Hello

is there a way to check that the ECU (behind passenger glove box) is working correctly?

having dried out the passenger footwell and sprayed WD40 on connectors in that area the car still starts intermittently again failing to recognise the hybrid battery.

have checked for leaks from roof drains and sealed windows with Captain Tolleys crack cure and footwells are dry now despite heavy rain but problem persists! Also WD40’d the HV connectors under the silver cover in engine bay!

was wondering if a replacement ECU is worth a go but expensive, even second hand. Unfortunately don’t know anyone locally with a working 2.4 2004 hybrid I could swap with to test it out!

any suggestions welcomed thanks j