Where is the water temperature gauge?

I bought a chip and installed it in the wiper. It now has many functions.

Check if there's a button on the wiper stalk. Mine has one. Pressing it up and down will change the display on the screen, and there's a water temperature gauge.

Can the buttons be reprogrammed?

If you've bought a lower trim version without a water temperature gauge, a warning symbol will appear on the dashboard if the water temperature gets too high.