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Matt, Mechanical Engineer
Category: Ford
Satisfied Customers: 22758
Experience:  BEng hons Mech engineering, in auto industry 22 years
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I put a new battery on my galaxy, but connected up wrong. I

Customer Question

I put a new battery on my galaxy, but connected up wrong. I put positive on negative and negative on positive. When I realised I put it back the right way. All lights work, but engine won't start, it sounds as if the the starter motor click in but nothing more. Help
Submitted: 4 months ago.
Category: Ford
Expert:  Matt replied 4 months ago.


Sorry to say that the reverse polarity on the battery has probably blown the ECU ,as the starter relay signal comes from the ECU

so I'd say the next step is to remove the ECU and send it off for repair



sorry its not a more DIY fix but thats the nature of the problem

it would also be worth checking the state of the high power fuses in the engine bay fusebox

Expert:  Matt replied 4 months ago.

do you still need help?
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