Hello, I asked someone last year how they were able to manually get the lift gate glass open, when the glass wont open. Unfortunately I got no reply.

My lower gate opens fine, but my upper glass wont open. Can someone help with how to get the glass open? I remember something about cutting a small hole in the lower plastic trim on the inside to manually open the glass, but I cant find that post. I would prefer not to take it to the dealer for this.

09 Range Rover Sport HSE non super charged.

Thanks in advance.