Ok, this takes a lot for me to admit but I screwed up the easiest and most common procedure besides filling the tank. I was in a hurry and hooked + to - when trying to jump off, it took me a few seconds to realize it a after I saw more sparks than usual at the running vehicles + post. I immediately removed the cables and hooked them up the right way. So to be clear I didn't try to crank the Land Rover with the cables hooked up - to +.

Now with the cables hooked up correctly it turns over but no start. I am getting two codes, one was there previously (P0327 knock sensor) and the new one is P0560- system voltage.

I reset the inertia switch and still no start.

Can anyone offer any insight here? Anyone brave enough to admit that they have done this and how they fixed it?


Thanks!

 

Did you check the 150A fusible link?

 

Yes, I'd check every fusible link, fuse in both power distribution boxes (one under hood and behind panel in drivers compartment). Also check for melted cables or terminal ends beyond the battery.


Brian.

 

I will check all suggested, but to be clear the truck will turn over but won't start.

 

Where is this link located? There are none marked 150A under the hood. See picture.

 

Go NutZ!
You asked if someone ever did "this" before. Yep, my brother reversed polarity on a Lexus and it cost him $3K for a new computer.
Let's hope that's NOT your issue in the end.

 

It's the silverish one on the lower right. It looks good but still check your cables and connections.


* beat me to it OverRover!

 

I did it on an Alfa Romeo, welcome to the club...

Thing never got working right.

 

had someone do this to a late 2000's S Class. First $10k estimate I ever submitted to a customer. Guy paid it too, guessed he really loved that car.

Edit. Melted harness. if you have a scan tool, hook it up and see codes what it kicks back

 

Try disconnecting both batt cables and leave it that way overnight. Put the batt on a charger, one with recondition if poss. Try again in the am. Still no start then...
Check for fuel, check for spark. Trace till you find it.
And check the grounds.