GLK-Class (X204) Produced 2008-2014

P2571 Error

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Old Aug 30, 2022 | 12:28 PM
  #1  
Kartoffel's Avatar
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2012 Mercedes-Benz GLK350
P2571 Error

I'm an owner of a new-to-me GLK350 4Matic, 2012, which I really love (my first Merc, though I've had other German and European makes in the past). It threw a P2571 code, and research on here has shown that could be a faulty PremAir sensor. My question is threefold:
  • What should I diagnose to see what the actual issue is?
  • Where can I get one of these sensors (are they called something else)?
  • What happens if it is the sensor and I do nothing? The only reason I ask is I live in a place with no emissions testing, so if it doesn't hurt the car at all I'd like to know if I can back-burner this repair if it is just a bad sensor.
Thanks!
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Old Aug 30, 2022 | 01:14 PM
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14 GLK 250
Originally Posted by Kartoffel
I'm an owner of a new-to-me GLK350 4Matic, 2012, which I really love (my first Merc, though I've had other German and European makes in the past). It threw a P2571 code, and research on here has shown that could be a faulty PremAir sensor. My question is threefold:
  • What should I diagnose to see what the actual issue is?
  • Where can I get one of these sensors (are they called something else)?
  • What happens if it is the sensor and I do nothing? The only reason I ask is I live in a place with no emissions testing, so if it doesn't hurt the car at all I'd like to know if I can back-burner this repair if it is just a bad sensor.
Thanks!
You will have 3 choices soon

1) Take it to Mercedes or specialized shop
2) Delete emissions and tune the car
3) Enjoy your 10 start countdown until car get bricked and wont start.
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Old Aug 30, 2022 | 01:17 PM
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2012 Mercedes-Benz GLK350
Originally Posted by C300fan2
You will have 3 choices soon

1) Take it to Mercedes or specialized shop
2) Delete emissions and tune the car
3) Enjoy your 10 start countdown until car get bricked and wont start.
Wait, 10 start what now?
I like option 2, but I would also like to diagnose the problem if it's a real issue. But gutting the emissions system does sound like a good time. What's generally used for tuning on these cars?
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Old Aug 30, 2022 | 01:18 PM
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14 GLK 250
These cars are stupid in that if there is a problem with the emissions they eventually start a 10 start countdown then brick your car.
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Old Aug 30, 2022 | 01:27 PM
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Kartoffel's Avatar
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2012 Mercedes-Benz GLK350
Originally Posted by C300fan2
These cars are stupid in that if there is a problem with the emissions they eventually start a 10 start countdown then brick your car.
Dang; that's not welcome news. I thought that was just a DEF fluid thing on the diesels. How do I flash a non-emission tune or some other such? I'd hate to get stuck somewhere because of a compliancy issue when I don't even have emissions laws to comply with!
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Old Aug 30, 2022 | 01:35 PM
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Originally Posted by Kartoffel
Dang; that's not welcome news. I thought that was just a DEF fluid thing on the diesels. How do I flash a non-emission tune or some other such? I'd hate to get stuck somewhere because of a compliancy issue when I don't even have emissions laws to comply with!
What you are being told about a 10 start countdown is incorrect. Does not apply to your version of the GLK.
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Old Aug 30, 2022 | 01:45 PM
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2012 Mercedes-Benz GLK350
Originally Posted by MBKLUE
What you are being told about a 10 start countdown is incorrect. Does not apply to your version of the GLK.
It's only for the GLK250 bluetec, correct? I thought it was just a diesel thing.
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Old Aug 30, 2022 | 01:47 PM
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Originally Posted by Kartoffel
It's only for the GLK250 bluetec, correct? I thought it was just a diesel thing.
Yes, that's right.
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Old Aug 30, 2022 | 01:52 PM
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Originally Posted by Kartoffel
It's only for the GLK250 bluetec, correct? I thought it was just a diesel thing.
Do you have a GLK350 CDI 4MATIC (non-BlueTEC Diesel)?

Last edited by MBKLUE; Aug 30, 2022 at 02:16 PM.
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Old Aug 30, 2022 | 03:02 PM
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2012 Mercedes-Benz GLK350
Originally Posted by MBKLUE
Do you have a GLK350 CDI 4MATIC (non-BlueTEC Diesel)?
No, it's the gas engine.
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Old Aug 30, 2022 | 11:00 PM
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14 GLK 250
Disregard then, my comments were assuming you have the diesel
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Old Aug 31, 2022 | 10:34 AM
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GLK 250
A quick review of YouTube returned this is a common W204-chassis error, on which our X204 trucks are based.

Take a look:
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