Since yesterday we have a V70 (P26 – 10/2000) next to our 745 (B230F/360 TKm). The following points would interest me: 1. Sums after opening the driver’s door If you open the driver’s door (other doors I haven’t tested yet) without doing anything else, then you hear from the center console a quiet suming (similar to a fan). The suming ends after approx. 45 sec. after hearing a clapping (relais). Is the suming normal? For what is this? 2. Alarm system I The Al I tested the arm system yesterday after the description in the operating manual. It works in such a way that e.g. after pocket claw from the closed car the turn signals and the LED on the dashboard light up in a short interval. However, I miss a siren (as it is indicated in the operating manual). On an older order (05/2009) I saw a note “alarm system releases temporarily without reason” 3. Alarm system II seller had at the test drive Pro bleme when starting the Volvo, which has been logged off for 4 weeks. However, he had a new battery installed at Volvo in January/February (note on the bill: “Battery variant installed on customer request” – 520A 100min). After yesterday I made some attempts with the remote control and the electr. functions like FH, electr. ASP, suddenly the 2 FB no longer went. Only via the key lockable / unlockable. I then charged the battery and then the FB went again. Overnight the alarm system was active and this afternoon the FB did not go again. Battery voltage 12.6 volts Does anyone have an idea? Thanks in advance Horst