This is all new to me, as I am a Diesel guy. I really like the W211 wagon, but they are only available in gas for US.

I did some searching and reading about this, but found nothing for the 2004 (only older MY's). I don"t know if the procedure is the same for all years. I am trying to smog my car (CA), and am having a hard time. I just read that the drive cycle has to be completed with the A/C off. Could that be the reason this monitor is not complete? It is around 100 degrees here today, but I will try the cycle again (with the A/C off) if that is the thing that is preventing if from completing. The car is already warmed up, and it may take a couple hours to get back down below the desired temp (70*c?). I also read about the forward O2 sensor needing to be perfect. If this is the case, it seems like the least expensive and easiest thing to do. Thanks in advance for any help, Rich

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All Diesel Fleet
1985 R107 300SLD TURBODIESEL
2005 E320 CDI (daily)

LOTS of parts for sale!


EGR block kit
http://www.peachparts.com/shopforum/diesel-discussion/355250-sale-egr-delete-block-off-plate-kit.html

1985 CA emissions 617 owners- You Need This!
Sanden style A/C Compressor Mounting Kit for your 616/ 617 For Sale + Install Inst.

Sanden Instalation Guide (post 11):
http://www.peachparts.com/shopforum/diesel-discussion/367883-sanden-retrofit-installation-guide.html