Last week I bought a car. After twelve years of service, my old trusty Peugeot 107 in blue has had its best. Expensive repairs were coming at some poi

What does this button do?

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2024-11-29 20:30:10

Last week I bought a car. After twelve years of service, my old trusty Peugeot 107 in blue has had its best. Expensive repairs were coming at some point, and I did not feel like waiting around for them to come. Plus the existing list of faults (like the high oil usage of about a litre per month, a brake that sometimes blocked without reason, or the smell of exhaust fumes that sometimes came into the car when the fan was on high) also started getting longer and longer.

Anyway, new car time! After a lot of research I ended up with an Opel Corsa from 2020. To be precise, it’s an Opel Corsa Edition with 101 HP, and most importantly, it’s mine.

Unlike the Peugeot, the Opel has gadgets - quite a few of them. Of course it being my car, I want to know what all buttons do, so I read the entire manual (which is very annoying to read, as they make one manual for every version of the car, so half of it does not apply to this car, but I digress). One of those buttons was the following below the lighting controls.

Those do not appear in the manual, or the website, or anywhere. What could they be? Just flipping the switch does nothing, apart from turning off the light on the switch. So let’s look where the button goes. I can see that part of it is wired to the back of the OBD2 port (a port that retrieves data from the onboard computer about the car, such as pedal position, temperature, lights, rev count, speed - basically if you can see it on your dashboard it can be read using the OBD2 port), so it is getting information from the car, but apart from that the wires go to places that I can’t see without taking the car further apart.