Hi my engine light came on a couple of days ago (CLS320CDI 2006) after plugging into a friends very expensive program it shows problerms with differential pressure sensor, number 6 cylinder glow plug and upstream lambda sensor. I plan to change these items myself but my questions are:-
1. do I buy MB parts or aftermarket from a local motor factors
2. how are the cylenders numbered to find number 6
3. I am assuming there are 2 upstream lambda sensors (one on each side) is there a way I can tell which one is defective
thanks in advance for any help
1. do I buy MB parts or aftermarket from a local motor factors
2. how are the cylenders numbered to find number 6
3. I am assuming there are 2 upstream lambda sensors (one on each side) is there a way I can tell which one is defective
thanks in advance for any help