Mercedes Benz GL320 with check engine lights and black smoke from time to time on 2008 Mercedes-Benz GL320 CDI

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
GL 320 diesel
(1) Answer
| |
A scantool is required to retrieve codes stored in the computer of your car. The codes stored will indicate where the fault is. Without knowing what codes are stored it is impossible to know what's wrong.