I want to change the primary and secondaryfuel filters. Also I am going to replace the injector hoses. Is there any particular order in which I should do this? Any helpful information will be appreciated.

 

Okay, thanks. Where is the cigar hose? Should it also be replaced with a braided hose?

 

Ahhhh. Thanks; I'll keep you posted.

 

I've changed the filters and injector hoses. It was a lot easier than I had imagined. However I have another issue now...I didn't prime the secondary filter during installation and prettty much killed the battery while trying to start it.My radio locked itself, the word "CODE" appears on the screen and ofcourse I don't know the password. Any suggestions or is this going to be a dealer visit? Second issue: the transmission is "jerking" when changing gears. It was shifting smoothly before I changed the filters and injector hoses. Any suggestions?

 

the cigar hose is that the return line?

 

I believe so. It is the largest of them. It connects directly behind the secondary fuel filter.

 

you can buy radio code online...search mercedes radio code in google

 

When I actually removed the radio. The code was written on the side of it. Problem solved. I truly don't believe that it is neccesary to buy it, the dealership will give it to for free with the serial number. You might need to provide proof of owmnership.