Mondeo mk4 battery wrong polarity
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Virgin
Joined: Nov 2018
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From: Guildfird
Mondeo mk4 battery wrong polarity
What a Muppet. I disconnected old battery and must have twisted it when putting it down. Anyway I put the new one in and got the +ve and -ve the wrong way round. Fans and the horn came on and I disconnected it. I realized to my horror the error I made. Lights and door locks work OK but engine won't start. Anyone got a good idea? Maybe immobilizer is unhappy
cossie fan (unluckerly)
Joined: Nov 2009
Posts: 9,798
Likes: 435
From: hampshire
Seen that a few times at when when people get the jump leads on the wrong way round. It can do serious damage to electrical systems. We had one in that needed 3 new ecu’s cost the customer thousands
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