Help help crossed battery when jump starting

Hi all
seeing if someone can help I have a 2005 1.8 petrol freelander the battery went flat so I jump started it not realising I had done the most stupidest thing ever and crossed the battery + and - I have a new battery and it won’t start it just clicks and the temperature gauge goes straight to hot even though the car hasn’t been started and there is no central locking heater fan and also no ignition key warning when I leave the key in the ignition I have checked every fuse and there all fine is there any relays that could of blown

Any help would be really appreciated

Many thanks

I suspect you have fried the ecu, the alternator, and the basic control unit

freelance said:

I suspect you have fried the ecu, the alternator, and the basic control unit

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I always thought jump starting a FLAT battery was a no no anyway?

Thanks for replying
is there anyway you no of checking the ecu and basic control until

You need to plug in diagnostics

Okay many thanks for replying to my problem I have just read someone who was having the same problem and it had blown there 150amp mega fuse so I’ll try that

Colour blind are we?
That's going to really cost you. Ouch!

DanClarke said:

Colour blind are we?
That's going to really cost you. Ouch!

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Thanks for your help and info

Lee40 said:

Thanks for your help and info

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Sorry mate, couldn't help myself.
Its one of those really basic mistakes they warn you about in BIG BOLD CAPITAL LETTERS, so hearing that you done goofed is a surprise.
I sincerely hope you are that lucky and only your mega-fuse has popped. We good now?

Yes no worries i deserve a ribbing about it I did say in the post I have done the most stupidest thing ever I just hope and pray it is the big fuse

Lee40 said:

Yes no worries i deserve a ribbing about it I did say in the post I have done the most stupidest thing ever I just hope and pray it is the big fuse

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We're only human.
Fingers are crossed for you.