2012 GL 350 - CHECK ENGINE LIGHT
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Joined: Jan 2012
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From: New York
2012 MB GL350
2012 GL 350 - CHECK ENGINE LIGHT
My check engine light occasionally comes on and off. This has been happening for approx. a month. The vehicle is brand new(purchased in November) and has 2K miles.
Spoke with dealer over the phone and they suspect that it has something to do with gas cap not being tight but that is clearly not the case.
My local mechanic doesnt have the 2012 software to diagnose (check engine light) and the dealership is a three hour round trip.
So before making the trip, anybody experience something similiar???
Spoke with dealer over the phone and they suspect that it has something to do with gas cap not being tight but that is clearly not the case.
My local mechanic doesnt have the 2012 software to diagnose (check engine light) and the dealership is a three hour round trip.
So before making the trip, anybody experience something similiar???
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A loose gas cap on a diesel does not cause a cel. Diesels don't have an evaporation system so gas cap is not monitored.
Your truck needs to be read. A generic obd2 (like the one your mechanic has) can read most of the generic codes- there is nothing "2012" about that.
Your truck needs to be read. A generic obd2 (like the one your mechanic has) can read most of the generic codes- there is nothing "2012" about that.
Last edited by alx; Jan 17, 2012 at 06:00 PM.
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Joined: Sep 2006
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From: Rectortown, VA
2012 GL 350, 2011 E 350, 2005 F-250
Also have GL 350 2012, purchased November 24, and now has 4500 miles. The check engine light comes on two to three times a week, and stays on about a day. Will have checked at 10k service.
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Super Member
Joined: Jan 2012
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From: Maryland
2022 E450 Prior:2021 S580 2012 E350BT, 2013 GL350BT, 2009 ML320BT, 2006 E320CDI, 1987 260E
Last 2 fill ups on my E350 BTC had something similar. I had under a quarter and filled up then got the CEL on right after which was gone the next morning. The next fill up the light came on before I filled up and I have a little over a quarter tank left (confirmed by amount of diesel it took).
According to the manual on page 267 the CEL can come on the diesel in the following condition:
Vehicles with a diesel engine: the fuel tank has been run dry
(Y page 164).
X Start the engine three to four times after refueling.
If the yellow Check Engine warning lamp goes out, emergency
running mode is canceled. The vehicle need not be checked.
The car definitely wasn't run dry as it didn't take near close to a full tank of diesel and the gauge didn't indicate reserve. The light resets it's self but it's weird. Didn't not any signs of being in "emergency running mode"?
Never had the problem in the '09 Ml320 BTC either?
According to the manual on page 267 the CEL can come on the diesel in the following condition:
Vehicles with a diesel engine: the fuel tank has been run dry
(Y page 164).
X Start the engine three to four times after refueling.
If the yellow Check Engine warning lamp goes out, emergency
running mode is canceled. The vehicle need not be checked.
The car definitely wasn't run dry as it didn't take near close to a full tank of diesel and the gauge didn't indicate reserve. The light resets it's self but it's weird. Didn't not any signs of being in "emergency running mode"?
Never had the problem in the '09 Ml320 BTC either?
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From: East Texas
2004 Volvo XC70; 2012 GLK 350 4matic
CEL coming on early in a vehicle's life is not limited to GL 350s. Our GLK 350 was delivered November 19, 2011. Last Sunday, at ~4,600 miles the CEL came on as were were leaving the house to drive 250 miles to Houston. The car ran fine all the way to Houston. I called Star Motors Monday afternoon and made an appointment for Tuesday afternoon. CEL stayed on until Tuesday afternoon when I started it to drive to the dealer. They checked the codes. Faulty intake manifold pressure sensor hose. Replaced.
Kudos to my wife for making me get it checked promptly. I realize that the CEL coming on is useless information by itself. However, it does indicate a problem somewhere. Waiting several thousand miles to get it checked out is risky at best.
Wayne
Kudos to my wife for making me get it checked promptly. I realize that the CEL coming on is useless information by itself. However, it does indicate a problem somewhere. Waiting several thousand miles to get it checked out is risky at best.
Wayne
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2012 Mercedes Benz GL350
I also took delivery of a new GL350 in January of this year, the check engine light went on/off 3 times so I took it to my dealer. I was told it was a known software problem and there would be a firmware update in Feb/Mar and I would have to bring the car in for a quick upload of the new computer software. I still have to call them and make this appointment. Interestingly enough, the light has not gone on since I brought the car in in late January. I will update once I have bring my car in again.
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Joined: Jul 2009
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From: Sunapee, NH
1999 CLK430, 2002 SL600 Silver Arrow, 2024 GLS450, 1980 Rolls-Royce Corniche FHC
Check Engine Light - Bluetec
One other thing that can trigger the check engine light is if you're driving in wet weather and go through a deep puddle or standing water - if it splashes on the diesel catalyst, the rapid cooling causes the emission control system to spaz out triggering the CEL. The error will not necessarily reset automatically. Allegedly, there is a SW fix/download as part of a service campaign to fix this. Happened 3 times on my GL320 BT.
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Joined: Sep 2006
Posts: 12
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From: Rectortown, VA
2012 GL 350, 2011 E 350, 2005 F-250
Had my vehicle get its 10000 mile service. It gets picked up and returned so I did not speak with anyone, but this is what was on the invoice. "Inspect engine lamp DTC 20B11 stored in SCR module. Software issue. Necessary to backdate to level V22 as per conference call dated Dec-11." The light had slowed down to once every two weeks or so the last 2000 miles. Has run great for these first 10K. 24MPG carrying about 700lbs daily.
Thread Starter
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Joined: Jan 2012
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From: New York
2012 MB GL350
My CEL has not come on for over 2 months. My situation does not fit into any criteria mentioned as far as triggering the CEL. I am still at only 6K miles and will have the dealer check into the software issue.
Thanks for the input everyone.
My GL 350 (2012) averages 18 city / 27 highway , although i have averaged around 30 MPG on some 50 mile trips which i managed to stay around 60 MPH.
Thanks for the input everyone.
My GL 350 (2012) averages 18 city / 27 highway , although i have averaged around 30 MPG on some 50 mile trips which i managed to stay around 60 MPH.
