Thanks for all the info, guys.
It seems to be a little bit better and less grabby after trying to use the brakes a bit.
updated - I think the problem described below is the same one sandange was having with his shifter:viewtopic.php?f=25&t=3830
I did have a strange problem today though.
I stopped and put the car into park and the "gear" indicator started flashing P and the yellow exclamation mark came on. The gear indicator flashed in Park and Neutral and Drive, but not reverse.
I had another 10 miles to get home and I didn't want to restart the car in case I couldn't get it started again.
As soon as I drove off, the turtle light came on regen was disabled.
I had never experienced turtle mode before so this was a new one for me. Could do 35-40mph at the maximum on a 60mph road. It was a little dicey!
As soon as I got home, I restarted the car and all seemed OK. I took it on a test run and all seemed well.https://postimg.org/image/fp3dx6gfp/https://postimg.org/image/xf52i8ovp/
2011 Peugeot Ion