zaphod_c
Member Since: 02 Mar 2025
Location: Seattle
Posts: 1
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I recently went to use my lr3 after a month of down time. I found the battery low and jumped it with a boost pack. It started but showed faults. I've had a previous alternator failure, so figured this was just low voltage, and decided to move it to the garage to check it over. As I pulled up, it showed a transmission fault. I stopped it, put it on a trickle charger to see if thee battery was recoverable and left it. When I came back to it the voltage showed good, but there was zero response from the vehicle. A few steps into checking, and I found the ecu/tcu box to be full of water, with both units dripping a few hundred mills out when I removed them. The tcu was clearly toast with many burnt components on the board. The ecu had been wet, but had no obviously visible faults or failed solder joints. I replaced the tcu with a used one. I read on various posts that this would work.
I reassembled the system with the new tcu and old ecu, and now I get most of the responses from the various modules on the iid, but the ecu does not respond.
I've used this forum for much advice on previous issues (as an unregistered user), but this one is not in the scope of posts I found.
My question is this: is there any reason that the iid tool would not register the ecu at all but would register the others that is NOT a reason to replace the ecu? I'm inclined to think that is where the current issue lies with the conditions I found, but it isn't a little bill if I head that route.
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 2nd Mar 2025 7:03 am |
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