2005 E320 CDI Glow Plugs
Thread Starter
Junior Member
Joined: Nov 2007
Posts: 33
Likes: 4
1991 190E 2.3
2005 E320 CDI Glow Plugs
Hello All,
Hoping to get some clarification regarding glow plugs. I have searched and come to find that the OM648 needs 5v Glow plugs and not 11.5. I believe this is the difference between Beru (5v) and Bosch (11.5v). I purchased my car from a family member and they had given me some Diesel RX Glow plugs. However after searching their website and here i can't seem to find anything stating that they work for our cars. The T1N Sprinter supposedly takes the same Glow plugs as the W211. I was able to find the following Link where a Sprinter owner is using them without issue. By the transitive property then they should work. I have emailed Diesel RX for confirmation but wanted to see if anybody on the forum had any information or could confirm.
I know that only 2 of the 6 plugs have been changed and the car hates to start sometimes so i would like to alleviate the issue.
Thanks
Hoping to get some clarification regarding glow plugs. I have searched and come to find that the OM648 needs 5v Glow plugs and not 11.5. I believe this is the difference between Beru (5v) and Bosch (11.5v). I purchased my car from a family member and they had given me some Diesel RX Glow plugs. However after searching their website and here i can't seem to find anything stating that they work for our cars. The T1N Sprinter supposedly takes the same Glow plugs as the W211. I was able to find the following Link where a Sprinter owner is using them without issue. By the transitive property then they should work. I have emailed Diesel RX for confirmation but wanted to see if anybody on the forum had any information or could confirm.
I know that only 2 of the 6 plugs have been changed and the car hates to start sometimes so i would like to alleviate the issue.
Thanks
Senior Member
Joined: Jan 2011
Posts: 422
Likes: 52
From: McDade, Texas
W211 e320 CDI
My 2006 definitely had Beru 5V plugs stock. Mercedes told be I needed Bosch 11V glowplugs and since it was apart anyway I used them. No issues BUT, on super cold starts, I do cycle key like 2-3 times to preheat the plugs.
Thread Starter
Junior Member
Joined: Nov 2007
Posts: 33
Likes: 4
1991 190E 2.3
Thanks Micah,
I think there may be a model year difference as well. Similar to how the Oil Capacity is listed differently in the Owners Manual between 05 and 06. I found the following Link as well and it seems like 5v is what the vehicle likes. I need to confirm regarding these DieselRx plugs as i am not looking forward to shelling out for the Beru plugs.
I think there may be a model year difference as well. Similar to how the Oil Capacity is listed differently in the Owners Manual between 05 and 06. I found the following Link as well and it seems like 5v is what the vehicle likes. I need to confirm regarding these DieselRx plugs as i am not looking forward to shelling out for the Beru plugs.
Super Member
Joined: Jan 2010
Posts: 563
Likes: 31
From: The Villages, Florida
2006 E320 CDI
When I had my indie first change my glow plugs, he received the 11.5 volt plugs from the MB dealer. After two months and 3k miles later, I had him install the correct 5 volt Beru glow plugs. In the two months I had the 11.5 volt plugs installed, I did not notice any difference in starting, but then again, I keep the car in a garage.
One thought I may add to using the 11.5 volt plugs is it may affect the glow plug controller's life. Just my thoughts!
Mike T.
One thought I may add to using the 11.5 volt plugs is it may affect the glow plug controller's life. Just my thoughts!
Mike T.
Thread Starter
Junior Member
Joined: Nov 2007
Posts: 33
Likes: 4
1991 190E 2.3
My car unfortunately has to sit outside and while it struggles to start it isn't so horrible. @Micah / AF1 Rac It seems like the going rate for the Glow Plugs is $23-$27 ECS Tuning seems to have the lowest price. I will have to check if any of my parts places locally have any better deals. The Diesel Rx Glow Plugs were roughly half if i recall correctly. I called today and left a message with their engineer to get some additional information regarding the plugs my uncle had purchased. I am no expert in Glow Plugs but have their been big technological advances with them? Akin to how we went from copper tip spark plugs to iridium ones.
Last edited by Aali1011; Mar 5, 2019 at 10:38 AM.
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MBWorld Fanatic!
Joined: Jan 2009
Posts: 9,224
Likes: 1,798
From: V E G A S
1922 Ford Model T / no OBD
I am old enough to remember glow plugs that in winter time would allow you to finish cigarette before engine was ready to crank.
The 5V plugs in 12V system are for reason. They got hot in couple of seconds, but require precise control as giving them 5 sec might burn them.
Than engines went long way as well. I had GP controller failure on 1980 VW diesel and in California 75F summer I was cranking it for several minutes, before it would fire up just short of killing the battery.
When module failed on 2008 Bluetec, even in 55F spring time, the engine would start in 3 seconds with no preheat.
Amazing what 5000 psi common rail pressure can do.
The 5V plugs in 12V system are for reason. They got hot in couple of seconds, but require precise control as giving them 5 sec might burn them.
Than engines went long way as well. I had GP controller failure on 1980 VW diesel and in California 75F summer I was cranking it for several minutes, before it would fire up just short of killing the battery.
When module failed on 2008 Bluetec, even in 55F spring time, the engine would start in 3 seconds with no preheat.
Amazing what 5000 psi common rail pressure can do.
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Senior Member
Joined: Jan 2011
Posts: 422
Likes: 52
From: McDade, Texas
W211 e320 CDI
gotta confess I was thinking about this thread firing up my 7.3 liter Ford today at 24F ambient temp. Even that takes FOREVER to heat glow plugs....and three heating cycles is about right for this temp/truck to start on 7-8ncylinders
Last edited by Micah / AF1 Rac; Mar 5, 2019 at 09:16 AM.
Thread Starter
Junior Member
Joined: Nov 2007
Posts: 33
Likes: 4
1991 190E 2.3
I never thought of cycling the glow plugs. Thanks for that. More likely than not I believe i will be picking up the Beru plugs. I hope the gentlemen from Diesel Rx calls but lets see what happens.
MBWorld Fanatic!
Joined: Jan 2009
Posts: 9,224
Likes: 1,798
From: V E G A S
1922 Ford Model T / no OBD
Don't compare MB to Ford for advise.
Ford is always at least 10 years behind with modern technology MB use.
your GP module cycles the voltage to GP even when you don't see it. Cycling the ignition interrupts computer program and that can't do any good.
Ford is always at least 10 years behind with modern technology MB use.
your GP module cycles the voltage to GP even when you don't see it. Cycling the ignition interrupts computer program and that can't do any good.
Junior Member
Joined: Sep 2020
Posts: 23
Likes: 5
From: Johannesburg
S320 CDI W220
Om649.901 glow plugs
Hello All,
Hoping to get some clarification regarding glow plugs. I have searched and come to find that the OM648 needs 5v Glow plugs and not 11.5. I believe this is the difference between Beru (5v) and Bosch (11.5v). I purchased my car from a family member and they had given me some Diesel RX Glow plugs. However after searching their website and here i can't seem to find anything stating that they work for our cars. The T1N Sprinter supposedly takes the same Glow plugs as the W211. I was able to find the following Link where a Sprinter owner is using them without issue. By the transitive property then they should work. I have emailed Diesel RX for confirmation but wanted to see if anybody on the forum had any information or could confirm.
I know that only 2 of the 6 plugs have been changed and the car hates to start sometimes so i would like to alleviate the issue.
Thanks
Hoping to get some clarification regarding glow plugs. I have searched and come to find that the OM648 needs 5v Glow plugs and not 11.5. I believe this is the difference between Beru (5v) and Bosch (11.5v). I purchased my car from a family member and they had given me some Diesel RX Glow plugs. However after searching their website and here i can't seem to find anything stating that they work for our cars. The T1N Sprinter supposedly takes the same Glow plugs as the W211. I was able to find the following Link where a Sprinter owner is using them without issue. By the transitive property then they should work. I have emailed Diesel RX for confirmation but wanted to see if anybody on the forum had any information or could confirm.
I know that only 2 of the 6 plugs have been changed and the car hates to start sometimes so i would like to alleviate the issue.
Thanks
What dealers here recommend Bosch I bought (0 250 202 142aEAF ALSO HAS 955 & 855 and Duraterm 008 on box). It came from German factory with 11,5 Denso’s.
I’m not a mechanic but got a glow plug light staying on so rand coding and got code for the no 2 glow plug. As per attached and what I learned later was. It’s not the actual no2 cylinder (2nd from front on straight 6 but second from back) but the no 5 cyclindeer!! Firing order.. The om648 right at bottom!
Last edited by Andrew Barnes; Dec 1, 2021 at 08:12 PM. Reason: Need add something
