Good to know. I've had water in there once after washing, and I know the dealer replaced my number plate. Can I ask how does the inner tail gate panel cover come off?An update on this. Since my last post, and with both sets of number plate holes taped up inside and out, I have had no issues with water dripping out the bottom of the tailgate despite several washings and some horrendous rain. It therefore looks like it was these holes that were the culprit.