Hello, I have several questions today, but I don’t want to open up so many threads. 1. How do I know if I have an electronic (or possibly no or defective) livau regulation, in which manual I know that this snap has to be on the re. taillight. 2. My climate is not running, I think. Problem: the function light (so the small point in the switch when the light is working, however when I turn on the climate no indicator light, the same problem If the climate had been changed, there would be a sticker in the engine compartment (refitted to R134a) and if it had been laid still(?) there would have been a sticker. 3rd time a theoretical question about the Lambda probe: Can I draw a conclusion from the exhaust gas values in the AU protocol whether the Lambda is slowly approaching its life-end? The limit value for the Lambda is 1,030 or so. Now I took the old test report (2006), there is the Lam bdawert 1.015 and the present value is 1.025. Should I prepare for the change? Thanks already in advance