What is “CDI3?”

jeremynichols

New Member
Joined
Jun 14, 2022
Messages
2
Reaction score
0
Your Mercedes
2005 E320 CDI (W211/OM648)
I, a new member of this group and a relatively new owner of a 2005 E320 CDI, have been searching in vain for the definition of “CDI3” and the difference between “CDI3” and “CDI-anything-else.” “CDI” itself I understand, the definitions are common. References to CDI3 (and occasionally, CDI2) seem to appear in European or UK-based publications; perhaps that’s why I cannot find it here in the colonies. Can anyone help me?
 

Blobcat

Moderator
Joined
Feb 8, 2006
Messages
32,889
Reaction score
18,472
Location
Grange Moor
Your Mercedes
R171 SLK280, Smart R451, Land Rover 110 County SW, 997 C2S, R1250 GSA TE 40th, CBR600FP
Hello and welcome
 

LostKiwi

Senior Member
Joined
Aug 25, 2006
Messages
29,829
Reaction score
19,598
Location
Midlands / Charente-Maritime
Your Mercedes
'93 500SL-32, '01 W210 Estate E240 (RIP), 02 R230 SL500, 04 Smart Roadster Coupe, 11 R350CDi
From memory it's the generation of engine management ECU.
I seem to recall my 350cdi is CDi4 and previous generation was CDi3.
 

mersum1es

Senior Member
Joined
Sep 25, 2010
Messages
2,245
Reaction score
370
Location
Finland
Your Mercedes
W212/-09/350CDI, W219/-07/320CDI, EX:W220/-01/320CDI, EX:W211/-04/320CDI, EX:W210/-01/270CDI
Yep, common rail system generation. Main difference between 2 and 3 are that 3rd gen has higher max pressure, primer pump in a tank (yes some 2nd gen had them in the end of production), fuel quantity control valve.
 

SmartAmg

Senior Member
Joined
May 19, 2018
Messages
11,241
Reaction score
3,820
Your Mercedes
2011 E class coupe 350 CDI
OP
J

jeremynichols

New Member
Joined
Jun 14, 2022
Messages
2
Reaction score
0
Your Mercedes
2005 E320 CDI (W211/OM648)
  • Thread Starter
  • Thread starter
  • #7
Thank you all for your replies! So, my USA-version 2005 E320 CDI (W211.026/OM648.961) is which generation?
 

V6Matty

Senior Member
Joined
Aug 1, 2012
Messages
8,390
Reaction score
2,992
Location
Near Penrith
Your Mercedes
S212/10/E350(His) W169/2005/A180 (Hers)
That’ll more than likely be CDI3
 

LostKiwi

Senior Member
Joined
Aug 25, 2006
Messages
29,829
Reaction score
19,598
Location
Midlands / Charente-Maritime
Your Mercedes
'93 500SL-32, '01 W210 Estate E240 (RIP), 02 R230 SL500, 04 Smart Roadster Coupe, 11 R350CDi
Yep. Most 320 if not all are CDI 3 whereas the 350s are CDI 4. Both use the same basic 3.0l V6 but the CDI 4 produces more power.
 

mersum1es

Senior Member
Joined
Sep 25, 2010
Messages
2,245
Reaction score
370
Location
Finland
Your Mercedes
W212/-09/350CDI, W219/-07/320CDI, EX:W220/-01/320CDI, EX:W211/-04/320CDI, EX:W210/-01/270CDI
Yep, Xentry shows what version it is when connecting car :) No drastic differences after 3rd gen IMO, some more pressure rise, injector coding and calibration stuff etc.
 


Welwyn Merx Limited is a family run business with genuine passion, dedication and 25 years of experience dealing with Mercedes-Benz and AMG passenger cars.
Tel: 01707 395999www.welwynmerx.uk
Top Bottom