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M-Class (W164) Produced 2006-2011: ML280CDI, ML320CDI, ML420CDI, ML350, ML500, ML550

ABS/ESP Light on

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Old Dec 24, 2020 | 02:03 PM
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Zoenation87
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06 Mercedes benz Ml500
ABS/ESP Light on
Hey guys I have a 06 Ml500 my ABS/ESP lights came on,Setting off my check engine light. I put it on scanner and received these codes P20CA,P20CC,P2004. Any assistance would be appreciated.... Thank you in advance.
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Old Dec 25, 2020 | 03:28 AM
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What scanner are you using?

Did you work on the MASS Air Flo Sensor at any time?

Code P20CA says there is a problem with the L/R speed sensor.
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Old Dec 31, 2020 | 04:04 PM
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06 Mercedes benz Ml500
no,no work was done on the MASS air flow sensor. And i am using this scanner on my vehicle
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Old Dec 31, 2020 | 04:29 PM
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06 Mercedes benz Ml500
Regarding the P2004 code
I also read something about might needing to replace the Air Flap runner because they usually break over. Mercedes only sell the whole manifold. I’ve seen that a after market kit is being sold but non for my vehicle
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Old Jan 1, 2021 | 07:10 AM
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Maj. Dundee
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Originally Posted by Zoenation87
I also read something about might needing to replace the Air Flap runner because they usually break over. Mercedes only sell the whole manifold. I’ve seen that a after market kit is being sold but non for my vehicle
That air flap [problem is only for 272 & 273 eng, ML500s do not have the same intake.

Replace the left rear speed sensor and after that delete all codes and see what codes return.
Attached Files
File Type: pdf
R&I Rear Wheel Speed Sensor.PDF (91.2 KB, 152 views)
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Old Jan 1, 2021 | 05:10 PM
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Originally Posted by Maj. Dundee
That air flap [problem is only for 272 & 273 eng, ML500s do not have the same intake.

Replace the left rear speed sensor and after that delete all codes and see what codes return.
Alright thank you Maj I’ll definitely keep you updated.
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Old Jan 16, 2021 | 07:41 PM
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Update: Thanks you Maj the ESP & ABS light went cut off.... But
Originally Posted by Zoenation87
Alright thank you Maj I’ll definitely keep you updated.

Hey Maj ,
replacing the rear speed sensors,fixed the abs and esp issue and the car was back driving great for a week,before the check engine light came on with the P2004 code again along with a P2013 code. Any ideas on what the issue may be.
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Old Jan 17, 2021 | 01:33 PM
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Are you saying that you got these two codes after replacing the sensor?
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Old Jan 17, 2021 | 01:37 PM
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Yes that is correct
Originally Posted by Maj. Dundee
Are you saying that you got these two codes after replacing the sensor?
Correct. It happened while my wife was driving. She said it started driving heavy then the check engine light came on. And those were the codes that came up
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Old Jan 17, 2021 | 02:05 PM
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Did you try deleting those codes?
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Old Jan 17, 2021 | 04:39 PM
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Yes I’ve rested the code and it has not prompted again. But it is driving kind weird like accelerating after a stop it kind of stutters or act as if its goin to stall out
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Old Jan 19, 2021 | 08:40 AM
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Hey Maj,any Ideas on what those codes could be indicating?
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Old Jan 20, 2021 | 04:28 AM
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Did you yourself replace the MAF Sensor?

Who did you buy it from?
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Old Jan 20, 2021 | 08:35 AM
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Originally Posted by Maj. Dundee
Did you yourself replace the MAF Sensor?

Who did you buy it from?
Actually no,I haven't replaced the MAF sensor at all. Ill look into ordering one ASAP,and will give you an update after bought and installed. Thanks in advance
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Old Jan 20, 2021 | 11:03 AM
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In post #3 you said this...........work was done on the MASS air flow sensor.

You are too confusing , I'm done with this thread.
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Old Jan 20, 2021 | 11:14 AM
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No need to get frustrated Maj
Originally Posted by Zoenation87
no,no work was done on the MASS air flow sensor. And i am using this scanner on my vehicle
. IF YOU READ IT CORRECTLY I SAID AND I QUOTE NO,NO WORK WAS DONE ON THE AIR FLOW SENSOR NOT ONCE DID I SAID WORK WAS DONE ON IT. If anything ill start a new thread after i replace the MAF Sensor, so there won’t be any future confusion. Thank you and have a great one bud 👍🏾👍🏾👍🏾👍🏾
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Old Jan 20, 2021 | 11:22 AM
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This is what you said in post #3, and I'm still done here.


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