Originally Posted by Piarapizza

Hi Xrover, I have exactly the same problem as you, the problem is that I'm not really good with cars and its really hard to find an honest and experience land rover mechanic, I understand you are in the LA area I live like 45 miles from LA and I just wonder if you know any one that can fix that for me I'm thinking on taking it to the dealer but looks like their not that good at Rovers either. Thanks and great tread.

Originally Posted by Xrover

Ok, I found the problem. I was on the right track yesterday when looking behind the battery area but I missed it.

I removed the battery and lifted out the Relay box (again) This time I followed each wire harness located in the area between the firewall and where the battery goes. I noticed a Black plastic box up against the firewall. There were Two wire looms going into it from the top of it. Each loom went through a rubber seal. I unsnapped the sides of the box and the front cover opened up.


There was a aluminum cased computer module inside. There were 3 plugs on top of it. All 3 were wet. I unplugged the 3 connectors and saw some corrosion on the terminals and water stains. The computer connector pins also had corrosion and were wet.

I removed the computer module which is called "Integrated Transfer Case" It is not a sealed unit. I bent back the aluminum case tabs to remove the cover and inspect the internals for water damage. The inside was clean and looked perfect. I sprayed a silcone based lube/cleaner into all the terminals on the wire loom side as well as the computer end. I used an electric toothbrush to clean all terminals. I then sprayed them with Electrical Contact Cleaner, then cleaned them again. All the corrosion came off and all the contacts were looking clean. I finished them off with a spray of the contact cleaner and let them air dry over night.

I reinstalled everything this morning and made sure the computer box was sealed up really good. I started up the LR3. The only warning I got now was "Transmission Range Fault" The Terrain Response dial still did not do anything nor could I switch into 4WD Lo. Hoping now the vehicle would just require a few drives to clear itself. After a couple of short drives the warning went away and the whole system worked perfectly.

When washing the engine compartment, water can get back behind the battery box cover and fall directly onto this computer box and electrical plugs. Be aware of this !!

Originally Posted by bikercrze1

To piggyback on my reply I posted my issue two weeks ago in this forum and got no responses. Anyone who owns a 2006 if you want to know the code to get into your touch screen computer diagnostic mode just send me a message. Thanks