I tried to find a schematic for a 2013 Performer. The newest model with propane start si called a Performer Platinum. I can't see any differnece in the ignition from an previous models.
Weber ahs 2 kinds of igniton for gas, this includes gas grills.. You push a button and it generates a spark via a friction setup. The second is with a battery that actually introduces volatge to creat the spark. I prefer the original way. When working correctly, it never fails and younever need to change batteries.
The Performer has a gas tube with the igniter inside the tube. Kinda crazy, but it works.
The gas grills that I have worked on have an ignitor box that sits outside the gas tube. Usually in a corner away from the main cooking area. They eventually fail or the burner tube gets clogged. It take a long time for thse things to occur. Regualr maintenance will keep it lasting for years.. I repeat, years..
I guess I may have to stop by a Weber dealer and check out the newest modles to see if they are any different. I highly doubt it.
Happy Grilling everyone!