Mercedes GL-Class Forum, Mercedes GLS Forum
problem with coil 4
GL500, 2013 GL Class (X166) engine 278. 130000 km.
The computer shows a problem with coil 4. I changed the coil, spark plug, injector.
Programmed the control unit.
The computer shows increased voltage on the coil, ignition error, short circuit in the coil.
Checked all the wires - no short...