Its called conformal coating. (YouTube it for more info )
Most automotive PCBs have it.
As above some firms also coat the PCB and chips in black epoxy to stop reverse engineering or hacking... (ie copy protection chips in games consoles etc)
Most automotive PCBs have it.
As above some firms also coat the PCB and chips in black epoxy to stop reverse engineering or hacking... (ie copy protection chips in games consoles etc)