For about 2 weeks now my 9-5er Kombi makes me 2.3t headache, since yesterday also stomach ache. But only the previous history: In the contract workshop a defective light bulb on the dipped light front left was detected and replaced during the air conditioning maintenance. The problem with this is that just one day before I had already changed the same lamp! The game always repeated itself every 2-3 days when the engine was lit, always at the front left. This morning I come into the garage and must be surprised that my car does not open at the push of a button. I first thought that the battery of the remote control was empty – wrong. Then I noticed that the LED of the alarm system did not flash. Then I opened the driver’s door manually and then found that the interior lighting was no longer possible. I knew that a battery could weaken after a few years. But that this would happen so suddenly. I don’t even like the interior lighting. Nothing is happening anymore. Everything went wonderful yesterday. I as a layman would now tap on the alternator. Constantly too much electricity and then all at once nothing more is strange. Sounds like the battery hasn’t been charged for a long time. What do the experts think about it? Greetings and thank you in advance!