I understand that EFB and AGM car batteries, used in start/stop vehicles, need some kind of registration or programming when they are replaced.
- Is this always the case? Can you skip this step if you replace the battery with an identical one?
- How does this step work and how much does it change from car to car? (I have a Volkswagen). Does it mean pushing some buttons? Does it require connecting a laptop to the car?
- Is it something that any mechanic could do or something that only an authorised dealer can do, e.g. maybe because there is some kind of software encryption and only authorized dealers can do it?
- In my area, authorised dealers are all closed because of the lockdown, but there are mobile mechanics who can replace tires and batteries. They explicitly say they have the "kit" to program an AGM battery. Does this sound credible? Or would they do a half-baked job because, say, every manufacturer requires very different kit for this?
- The Volkswagen manual doesn't say anything, other than "bring it to a Volkswagen dealer"; the philosophy is that even replacing the screen wash should be done by an authorised dealer who will charge for labour, otherwise very bad and dangerous things will happen! :)