GL 350 BlueTec 2 fuel injectors need to be replaced in two weeks
Junior Member
Joined: Mar 2017
Posts: 20
Likes: 0
gl350 bluetec
update: I got the downstream NOx sensor replaced...and was looking good for a week now.. but then. went to meijers to put in diesel gas... and maybe 10mins later...CEL light is back on... so I have a couple of thoughts? ... it was raining... don't know if that had a contributing factor.. and then i went through a pool of water which i didnt see because it was so dark... so i dont know if the rush of water in the undercarriage did anything? i'm to let the GL dry off for the night. and then i guess a week more... and then go back to the dealer... is the sensor so sensitive? man this truck has been nothing of one worry to the next... and btw last week got a crack in the front windshield...which i just replaced today. blah the story never ends...
Junior Member
Joined: Mar 2017
Posts: 20
Likes: 0
gl350 bluetec
went to autozone and got a 'P02D3 Cylinder 4 Fuel Injector Offset Learning' ...
20 mins later after I got home ... I turned the GL back on ... no more CEL light... I'm hoping it was the rain? or something got reset on it's own?
20 mins later after I got home ... I turned the GL back on ... no more CEL light... I'm hoping it was the rain? or something got reset on it's own?
Senior Member
Joined: Aug 2016
Posts: 262
Likes: 30
2014 GL450
Not familiar with the GL CEL issues, but in general the CEL should not reset itself. Did the person at AutoZone clear the code for you? Quick search reveals this:
http://repairpal.com/OBD-II-Code-P02...g-at-max-limit
Still a fuel injector issue it appears. I doubt it has anything to do with the rain. The above link shows these as the common causes:
Damaged or contaminated spark plug
Engine sensor failure
Exhaust leak
Fuel injector failure
Powertrain Control Module (PCM) software needs to be updated
You said selling dealer already replaced fuel injector for cyl 1. Now, cyl 4 is acting up. Any chance of them to replace the remaining 5? At the same time all 6 spark plugs?
http://repairpal.com/OBD-II-Code-P02...g-at-max-limit
Still a fuel injector issue it appears. I doubt it has anything to do with the rain. The above link shows these as the common causes:
Damaged or contaminated spark plug
Engine sensor failure
Exhaust leak
Fuel injector failure
Powertrain Control Module (PCM) software needs to be updated
You said selling dealer already replaced fuel injector for cyl 1. Now, cyl 4 is acting up. Any chance of them to replace the remaining 5? At the same time all 6 spark plugs?
Last edited by jlim; May 1, 2017 at 10:29 AM.
Junior Member
Joined: Feb 2016
Posts: 22
Likes: 0
2014 gl350 designo
Not familiar with the GL CEL issues, but in general the CEL should not reset itself. Did the person at AutoZone clear the code for you? Quick search reveals this:
http://repairpal.com/OBD-II-Code-P02...g-at-max-limit
Still a fuel injector issue it appears. I doubt it has anything to do with the rain. The above link shows these as the common causes:
Damaged or contaminated spark plug
]
http://repairpal.com/OBD-II-Code-P02...g-at-max-limit
Still a fuel injector issue it appears. I doubt it has anything to do with the rain. The above link shows these as the common causes:
Damaged or contaminated spark plug
]
Diesels dont have spark plugs.
Jared, Autozone scantools are not capable of properly retrieving the correct problem the cars ecu stores in code. It must be scanned with dealer level diagnostic tool (xentry). Otherwise the selling dealer is just throwing parts at it and hoping you and problems with car finally go away.
The fuel injectors that were replaced for example have to be adapted in and coded for the engines ecu to to operate them correctly. If the selling dealers shop does not have the dealer lever XENTRY setup then they are wasting your time ,their time and money.
Hope this helps
Last edited by #2burners; May 4, 2017 at 10:39 PM. Reason: Typo
Junior Member
Joined: Feb 2016
Posts: 22
Likes: 0
2014 gl350 designo
Is there a history of fuel filter service? Has the fuel been tested for water/contaminates ? Gasoline mistakenly put in tank ? If I were the tech these are the first go to's . As fuel injectors are pricey, fuel filtration and quality is key to long injector life. Is the tech aware of coding in the injectors? Make sure if and when they get this resolved a new oem or Mann fuel filter is installed.
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Junior Member
Joined: Mar 2017
Posts: 20
Likes: 0
gl350 bluetec
yah he was thinking biodiesel may have been put in before? what do you mean by coding in the injectors? like configuring the new injector with the computer stuff? i'll ask about the fuel filter as well... thanks again.
Junior Member
Joined: Feb 2016
Posts: 22
Likes: 0
2014 gl350 designo
Yes, injectors have to be configured to car basically . Only can be done with dealer type service tool. Imho, the fuel filter should be changed regardless of when it was put in or if no exact history of replacement considering the multiple injector failures at this mileage. Oem only or Mann filter with latest revision. Fuel test for water and bio content is a must! What part of N.A. Are you located? Bio can be an issue but certain areas dont have it in large percentages.
Junior Member
Joined: Mar 2017
Posts: 20
Likes: 0
gl350 bluetec
i live in the Chicago area. when I bought the GL i called a Mercedes dealership and asked what gas station can I go to... they said Meijers. none of that biodiesel stuff. luckily theres a Meijers not too far from me. Ill ask about replacing the fuel filter.
Also any other notes or insight you or anyone else may have on keeping the GL in smooth running condition... like i'm getting used to the engine loudness when compared to my minivan or another car...it's much louder and u can really hear the motor running...
and lastly thank u all for you input and time.
Also any other notes or insight you or anyone else may have on keeping the GL in smooth running condition... like i'm getting used to the engine loudness when compared to my minivan or another car...it's much louder and u can really hear the motor running...
and lastly thank u all for you input and time.
Junior Member
Joined: Feb 2016
Posts: 22
Likes: 0
2014 gl350 designo
Change engine and cabin air filters and flush brake fluid. Oil change every 7500 mi. with 229.52 spec oil , fuel filters every 10-20k.
Excessive engine noise is possibly caused by the injectors not being coded in to ecu. If
the mechanic just r+r without doing the proper adaptation and coding, the injector(s) cannot work in harmony with the other injectors. Then the other injectors get told to compensate and thats when all goes awry
Good luck, if it still isnt correct tell the used car dealer you want it serviced by mb.
Hope this helps
Excessive engine noise is possibly caused by the injectors not being coded in to ecu. If
the mechanic just r+r without doing the proper adaptation and coding, the injector(s) cannot work in harmony with the other injectors. Then the other injectors get told to compensate and thats when all goes awry
Good luck, if it still isnt correct tell the used car dealer you want it serviced by mb.
Hope this helps
Newbie
Joined: Dec 2015
Posts: 10
Likes: 2
From: Katy TX
1992 Mercedes 300sd, 2005 sl55, 2005 c230, 2013 gl350, 2012 S63 Biturbo, 1994 HMMWV, 1999 LX470
2013-2014 GL350 Fuel injectors issue - dont replace without trying this
Ok, so i have made a 2000 mile trip recently and i know place where i have purchased diesel was not where i would normally buy diesel, but try to find a shell in the middle of texas dessert. Anyway.. the car started to shake at idle and cracking more pistachios than usual.. once i got home i pluged in star and came up with Injector 1 and 4 to be replaced. I cleared the code and let it come up again.. this time it was showing only injector 1 but the actual values were still showing 1 and 4 . I addedd some injector cleaner with no success. I was looking at $500 + per injector but then:
SOLUTION:
1. Re-programed the injectors as you would install new ones
2. Cleared all possible values on the pre-teaching screen.
3.GOOD RUNNING DIESEL
i do beleive that this was a fuel related but also a software issue.
Good luck
SOLUTION:
1. Re-programed the injectors as you would install new ones
2. Cleared all possible values on the pre-teaching screen.
3.GOOD RUNNING DIESEL
i do beleive that this was a fuel related but also a software issue.
Good luck
Super Member
Joined: Feb 2017
Posts: 506
Likes: 54
GL350 Bluetec and GLS580
Which programmer are you using and how many miles do you have since you cleared the code?
Ok, so i have made a 2000 mile trip recently and i know place where i have purchased diesel was not where i would normally buy diesel, but try to find a shell in the middle of texas dessert. Anyway.. the car started to shake at idle and cracking more pistachios than usual.. once i got home i pluged in star and came up with Injector 1 and 4 to be replaced. I cleared the code and let it come up again.. this time it was showing only injector 1 but the actual values were still showing 1 and 4 . I addedd some injector cleaner with no success. I was looking at $500 + per injector but then:
SOLUTION:
1. Re-programed the injectors as you would install new ones
2. Cleared all possible values on the pre-teaching screen.
3.GOOD RUNNING DIESEL
i do beleive that this was a fuel related but also a software issue.
Good luck
SOLUTION:
1. Re-programed the injectors as you would install new ones
2. Cleared all possible values on the pre-teaching screen.
3.GOOD RUNNING DIESEL
i do beleive that this was a fuel related but also a software issue.
Good luck
Newbie
Joined: Dec 2015
Posts: 10
Likes: 2
From: Katy TX
1992 Mercedes 300sd, 2005 sl55, 2005 c230, 2013 gl350, 2012 S63 Biturbo, 1994 HMMWV, 1999 LX470
And dont remove the injectors but use the same numbers as they are currently stored on your car, xentry will show them to you, just copy the old numbers and paste them on the new field. i wish i had taken some screenshots.
