Good morning, I could use some tips, yesterday I found out for the second time that the car has only 12.3 V of rest voltage, 30 min. after turning off. F25 for the siren (1 year old) I pulled 3 weeks ago, now again problems, but more. Battery jammed overnight and fully charged, clamped, everything learned. Sleeps and stops 12.94 V of rest tension. Distinctive alarm system, only warning indicator, starts when disconnecting and jamming the ground cable. enso. When driving off, set up roll bar as a red warning, placed warning away, only the yellow symbol in the tacho lights up, triangle windows do not open up, lowered as at the door. Do not react, the front work including comfort closure and opening. When learning the triangle windows worked. Comand goes on, but no sound, CD changer: No CD changer available. ZV, seat heating, disc heating, massage, air conditioning, seats, light everything works. SAM Fa hrer, as well as passenger side dry, trunk dry. Will now read out with Icarsoft MB VII. Running functions such as sound system, rollbar, window at the back over one and the same SAM? I am grateful for every tip so that I can exclude it and order it at MB. Does a SAM actually have to be learned? In the door is also a SAM or is that in the engine room driver side? Greetings from Essen Ben