Hello, I would like some advice. On the cockpit of my Opel Mokka the yellow lamp lights up with the exclamation mark, i.e. tire pressure. I set the tire pressure all around to 2.2. The yellow light continued to shine and I have: GEREL 50448 tire pressure gauge, learning device TPMS Relearn Tool?Device for reset of the maturationEL 50448 tire pressure gauge, learning device TPMS Relearn Tool?Device for reset of the tire pressure? Resetting the tyre pressure. UI learning system EL 50448 purchased. On three tires it beeps when using the device, but on the left rear tire it does not beep and the lamp inside continues to glow yellow. Who has a hint, what I could do.