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Title: Water damage ecu Post by: Nic88 on March 24, 2021, 11:20:42 AM Hi guys, my ecu got some water on it. As a result the car won't start... I tried connected to the ecu with vcds but not luck. I left it for a few days and sprayed contact cleaner etc. I don't have any corrosion or visible damage. But It still wont work when connected to the car, but on my bench setup I can connect to the ecu with no issues. Is there a relatively easy process to fix the ecu, does someone perhaps know why it work work off the car but not on. It's an me7.5
Title: Re: Water damage ecu Post by: BlackT on March 24, 2021, 01:06:37 PM Firat check connectors white, red, brown... that connect engine harnes to car. Under the ECU in longitudal engines
Title: Re: Water damage ecu Post by: Nic88 on March 24, 2021, 02:46:42 PM So as ecu works on a bench... I also put a faulty ecu in the car and thay works. So it can't be the harness on the car. I'm not sure if there is any fuse/capacitor on the ecu thats involved when connected to the car
Title: Re: Water damage ecu Post by: prj on March 24, 2021, 03:20:04 PM Step 1.
Buy another ECU Step 2. Clone the current one to the new one. Forget about using any ECU after water damage. |