VW Passat 2008 problems with anti-theft alarm system and weak battery

Hello, I once had a similar problem with my 2005 VW Golf. I'm not a car expert, but I do have a bit of experience in dealing with my Golf. My alarm system was also to blame and I had to go to my garage. They recoded the alarm system. It was just a fault with the visual display. That solved my problem and I paid 45 euros for all the fun. Are you sure that the problem is caused by starting the car or could it also be caused by the alarm or locking system? Please give me more information about your vehicle so that I can help you better. Best regards!

(Translated from German)

Thanks for the tip about the alarm system. I have already considered that it could have something to do with it. It's a 2008 Passat, with currently 271430 km on the clock. The last service was recently, and nothing unusual was found. The starting problem occurs regularly. I'm not sure exactly where it's coming from. I'll check with the garage. Best regards!

(Translated from German)

Thanks again for your help. I will definitely ask the garage and see if they can find and fix the problem. Hopefully the whole thing can be solved quickly and easily. See you then and best regards!

(Translated from German)

Thanks for the reply. So, if the starting problem always occurs after the alarm system has been triggered, then it is reasonable to suspect that it could actually be related to this. The garage will probably also check to see if it is somehow connected. If the alarm system is actually constantly going off for no reason, this can also drain the battery. Let me know after you've been to the garage. I'd be really interested to know if the problem has been fixed. Good luck! Greetings back!

(Translated from German)