Did you read the article?
The push button arrangement was constructed to facilitate reading the DM (diagnostic module - a totally US device installed to track US mandated emissions failures). You ONLY can read the DM with this technique.
Your car should have the 16 pin diagnostic socket and if you look in the holes, everyone that has a metal connector represents a system that can be evaluated by a simialr technique. Only problem is one must set up the light ones self for each system. One must also know what each system represents and eventually have a code list for the read out.
Bosch Master, ASE Master, L1
33 years MB technician