Can't say. Issue is intermittent, so didn't really notice until 2nd week with the car. I installed the accessories ASAP because they were what I considered basic/critical. Surprising car does not come with central lock or alarm. Dashcam can be considered luxury, but how seriously do police investigate these days, without dashcam?

I do not know what Sanden did, they just informed no issue found, and they reset 'something'. Anything further contact again. When issue occurred again, they directed me back to SC. I do not actually know if they dismantled anything, or what/how exactly they checked. I am not exactly well versed in car parts/maintenance. When try pressing for details, very evasive answers, 'check first' or 'try first' or 'anything call back' without further elaboration. Even when requesting my details, had to enquire 4(?) times before finally clarifying he needed them for warranty check/claim.

As far as I can tell, accessory shop hooked up 2 cables to the fusebox for the dashcam. For the central lock/alarm, he claims he didn't cut any wire, but rather cut open the wire cover and connected his own wire with the existing wire, but this was at the dashboard, not fusebox.

How would kdpn help?