Hi peeps I wonder if you good people would give some advise. I had to engage the diff lock yesterday as I was off road, this was the first time I had used it, and I suspect it may be the first time it had been engaged. I followed the instructions I reversed and then went forward. The diff handle engaged easy and it drives as normal however the light is still on and I have driven her about 5 miles but still on. Will it harm my landy? BTW she is a 300tdi 1996