I'm driving a 2008 LR2. 8 months ago, the yellow triangle light kept on when I was driving in highway. Such three problems came out together as HDC system unavailable, transmission fault, and special problem off. I did not fix it as I can feel nothing wrong while I'm driving. This morning, my friend helped me check and found the code: U0136 lost communication with differential control module-rear, which means my LR2 has turned to be FWD instead of AWD. Does anyone ever meet the same problem? plz help me! How much should I pay if I go to a dealer to repair? is it an electronic problem?