2003 Volkswagon Jetta Wagon 2.0 won't start; someone helping me jump start the battery had the cables on his end switched. I replaced the ECU and the dash board lights up, but won't start.

Asked by 808SBESTDOTCOM Oct 16, 2016 at 01:35 AM about the 2003 Volkswagen Jetta GL 2.0 Wagon

Question type: Maintenance & Repair

2003 Volkswagon Jetta Wagon 2.0 won't start; someone helping me jump start the battery had the cables on his end switched. I replaced the ECU and the dash board lights up, but won't start.
Can someone reference me to relays: 175, 100, 53, and 409? I guessing to start there and watched a couple of youtube videos on relay 109 which I can't seam to find under my dash.

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Deathjam4 answered 7 years ago

if you changed the ecu out for another one you likely have not programed it for the car.. put the old one back in cause usually jumping the car would not have ruined your computer unless he attached the jumpers directly to the board.

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2003 Volkswagon Jetta Wagon 2.0 won't start; someone helping me jump start the battery had the cables on his end switched. I replaced the ECU and the dash board lights up, but won't start.

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2003 Volkswagon Jetta Wagon 2.0 won't start; someone helping me jump start the battery had the cables on his end switched. I replaced the ECU and the dash board lights up, but won't start.

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