Car: 2017 EX 1.0 Manual
Join Date: 15th April 2013
Thanked 59 Times in 52 Posts
You should re-initialise the system each time you check/change pressure.
The system is really useful and alerted me to a slow puncture on my driver's side front wheel a couple of weeks ago. I was glad to have the tire fixed for only £12 (caused by a screw in the tire). My car has only done 4k miles so tire was worth repairing.
As said, it's all in the manual and done via the i-MID.