Hello, as already described in another thread, I would like to buy with a used V50 BJ 2005 MJ2005. I have a question about climate maintenance. In the manual I can find nothing about this. At what intervals does this have to be carried out? Is this part of the annual inspections or must be explicitly commissioned. (In the service booklet there are a lot of test points, however, nothing of the climate maintenance is written here) So can one assume that the maintenance was done (if necessary)? Greeting mr.cracky