GL Class (X164) 2007-2012: GL320CDI, GL420CDI, GL450, GL550

Looking at a 2012 GL450

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Old Mar 21, 2021 | 10:46 PM
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Xavier Smith II's Avatar
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2010 C63 AMG, 2015 Jaguar F type R, 2015 GL450, 2018 GLS 550, 2021 GLS 450
Looking at a 2012 GL450

Hello All,

Looking at a 2012 GL450. What should I look out for? I see that Airmatic is problematic, anything else?
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Old Mar 22, 2021 | 02:49 AM
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Originally Posted by Xavier Smith II
Hello All,

Looking at a 2012 GL450. What should I look out for? I see that Airmatic is problematic, anything else?
There's a nice white one by me in Eastern PA

Last edited by Audi Junkie; Mar 22, 2021 at 02:49 AM. Reason: Don't get the diesel
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Old Mar 22, 2021 | 09:46 AM
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NGL450 w/EORP, S550
Airmatic is not problematic unless the components haven’t been preemptively replaced.

you’re looking for a car with a decent documented maintenance history - one that is documented by Mercedes Benz in a vehicle Master Inquiry (VMI), - —not just a carfax record of oil changes.

also look for water in the spare wheel trunk and under the front passenger seat in the battery compartment. Leave a car like that alone.

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Old Mar 22, 2021 | 04:12 PM
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Get a pre-purchase inspection done at an MB dealer or a reputable independent MB shop. It will give you an idea about what may need to be looked at sooner or later, but not necessarily replaced immediately. If you have a code reader for MB, plug it in and scan for codes, obviously with the permission of the owner. Don't use a generic code reader, it will not give you the full picture. If they refuse, that might be a sign to walk away.
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Old Mar 22, 2021 | 09:56 PM
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2010 C63 AMG, 2015 Jaguar F type R, 2015 GL450, 2018 GLS 550, 2021 GLS 450
Originally Posted by expl0rer
Get a pre-purchase inspection done at an MB dealer or a reputable independent MB shop. It will give you an idea about what may need to be looked at sooner or later, but not necessarily replaced immediately. If you have a code reader for MB, plug it in and scan for codes, obviously with the permission of the owner. Don't use a generic code reader, it will not give you the full picture. If they refuse, that might be a sign to walk away.
i have a scan tool that can pull live stats and stored codes + reset modules on my ‘10 C63

Do you think that is deep enough or should I find someone with Xentry?
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Old Mar 22, 2021 | 10:20 PM
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GL550 X164
Originally Posted by Xavier Smith II
i have a scan tool that can pull live stats and stored codes + reset modules on my ‘10 C63

Do you think that is deep enough or should I find someone with Xentry?
I don't think you need Xentry. If your scanner can pull up stored codes on your C63, it should be capable of pulling codes for the GL as well. You should be looking for anything stored or current in the GL. Ideally you could interrogate the GL with Xentry, but I don't think that's necessary.
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Old Mar 23, 2021 | 07:29 AM
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2012 GL450 1987 300SDL 2006 E350
Originally Posted by Xavier Smith II
i have a scan tool that can pull live stats and stored codes + reset modules on my ‘10 C63

Do you think that is deep enough or should I find someone with Xentry?

Xavier,
Which scan tool do you have?
Regards
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Old Mar 23, 2021 | 10:30 AM
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NGL450 w/EORP, S550
Originally Posted by Xavier Smith II
i have a scan tool that can pull live stats and stored codes + reset modules on my ‘10 C63

Do you think that is deep enough or should I find someone with Xentry?
that should be enough for you to decide whether or not the car warrants further attention in the form of a PPI.

if you can get das/sentry and a lift and you know how to use them you’re pretty much doing your own PPI.

just keep in mind that a low or dying battery will throw a bunch of random stored codes that are related by under voltage or signal implausible labels.
it doesn’t mean the car is trash, unless the electrical faults / power interruptions were caused by water intrusions.
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Old May 5, 2021 | 10:24 AM
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Originally Posted by Max Blast
that should be enough for you to decide whether or not the car warrants further attention in the form of a PPI.

if you can get das/sentry and a lift and you know how to use them you’re pretty much doing your own PPI.

just keep in mind that a low or dying battery will throw a bunch of random stored codes that are related by under voltage or signal implausible labels.
it doesn’t mean the car is trash, unless the electrical faults / power interruptions were caused by water intrusions.
Went after a rainstorm, the well/pocket where the SAM sits had a lot of water in it and there was a slight Oil leak, dealership (Volvo) wouldn’t move on price so I walked.
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Old May 5, 2021 | 02:23 PM
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NGL450 w/EORP, S550
Originally Posted by Xavier Smith II
Went after a rainstorm, the well/pocket where the SAM sits had a lot of water in it and there was a slight Oil leak, dealership (Volvo) wouldn’t move on price so I walked.
good on you
i wouldn’t have had it at any price
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Old May 5, 2021 | 05:18 PM
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GL550 X164
Originally Posted by Xavier Smith II
Went after a rainstorm, the well/pocket where the SAM sits had a lot of water in it and there was a slight Oil leak, dealership (Volvo) wouldn’t move on price so I walked.
That's my fav thing to do when a dealer or seller doesn't move on price.
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Old May 5, 2021 | 10:52 PM
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NGL450 w/EORP, S550
Originally Posted by expl0rer
That's my fav thing to do when a dealer or seller doesn't move on price.
that; and shout loudly so other customers will hear, what a lemon that car is and how could you try to sell me such a traffic hazard.

then lowballing them.

curious, what was the ask?
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Old May 5, 2021 | 11:29 PM
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I bawlked on a new Tiguan deal in 2010, at Al Holbert's dealership in Philly.

My phone rang about 10 minutes after leaving. I seriously don't know how they got my number, because I didn't give it to anyone at the dealership.

I suppose they have a database or something. I did buy the car, afterall.


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Old May 6, 2021 | 12:38 PM
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2012 gl450
I have a gl450 2012 they are awesome trucks.
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Old May 7, 2021 | 06:55 AM
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GL450
I just purchased a 2012 with 77K....

and now has 85K. Great vehicle, previously owned by a Doctor who had all services performed at MB. Last year for this model, all the bugs worked out by then. In my opinion, the engine is better. No forced air induction (no turbo's) to deal with and good power. These vehicles get a bad rap, that I never understood. The power train is basically a G Wagon, can't do much better than that! Get one that has been serviced at the dealer. I will be doing some preventative maintenance, transmission fluid and filter, plugs and 4 wheel drive differential service. Good luck on your search!
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Old May 7, 2021 | 08:18 AM
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2012 gl450
That’s funny I just hit 85000 miles to. I agree I think these trucks are amazing especially the power those engines give off. Preventative maintenance is a key factor and keeping the vehicle in good working condition good luck with yours
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