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

2006 ml500 issues

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Old Aug 20, 2019 | 11:20 PM
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Zoenation87's Avatar
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From: Miami fl
06 Mercedes benz Ml500
2006 ml500 issues

Hello guys i have a 06 ml500 I’m having issues with. Recently my vehicle started forcing radiator fluid out the hose. Its lime it cannot hold the fluid in the line. I took the hose off and checked it, not dry rotted or anything. I put on the obd scanner and got a p0121 after some research I figured it was the tps. I really need some help it’s beginning to get pricey buying fluid every 3rd day. And for now its me and my family of 4 only transportation.
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Old Aug 21, 2019 | 06:55 AM
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2002 ML 320 & 2006 ML500



First of all code P0121 is a problem with the Accelerator Pedal Sensor and has nothing to do with your problem. Erase it and see if it returns.

There are multiple hoses in the cooling system, which one exactly are you referring to?
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Old Aug 21, 2019 | 09:05 AM
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06 Mercedes benz Ml500
???

Ive done tht already it came back.I was told because that it could be caused by the the car not being in the right gear. Forcing pressure into the hose. because it only forces on the hose connected from the engine directly to the top radiar
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Old Aug 21, 2019 | 10:38 AM
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Yes the faulty pedal sensor could be causing the trans. problem. Why don't you replace it since the code returns? There are 4 possibilities for the sensor, broken wire on the connector, plausibility or voltage problem.

Call your dealer with your vin# and tell him you need an Accelerator Pedal Sensor.

The leak on your hose could be the radiator itself leaking.
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Old Aug 21, 2019 | 10:50 AM
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06 Mercedes benz Ml500
Thank you thank you thank you

Thank you maj,ill go ahead and do that now. As well as got get a new hose. I took the liberty to go take pics so you can see what i was talking about.👇🏾👇🏾👇🏾 This is where the leak is coming from

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Old Aug 21, 2019 | 11:02 AM
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Also i took the liberty to take a pic of the fault codes




















These are the codes that were detected. Once i cleared the fault codes,cut the car off and turn it on again and ran the test. It said no DTC
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Old Aug 21, 2019 | 11:16 AM
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Sorry the code was P0221

Sorry not P0121
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Old Aug 21, 2019 | 11:42 AM
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iCarsoft is not going to do the trick unless it can read codes in Trans. Module and the ESP Module. They don't even give explanations for each code.

Scroll through the 9 pages looking for yellow highlighted sections for the explanations of your codes.

I suggest you clear all the codes. Drive the truck as usual and carry your code reader. As soon as any light comes on the dash, pull over and immediately read the codes.
Attached Files
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DTC ECM 164.175.pdf (269.6 KB, 1005 views)
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Old Aug 22, 2019 | 02:45 AM
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Maj. Dundee's Avatar
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Originally Posted by Zoenation87
Sorry not P0121

I don't understand, you never posted code P0121???????????????
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Old Aug 22, 2019 | 02:51 AM
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Did you clear the codes?

Did you see if there were any codes in the Trans. Module and the ESP Module?
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Old Aug 22, 2019 | 10:40 AM
  #11  
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06 Mercedes benz Ml500
The P0121 code was a misread the code was P0221 but its the same thing,the pedal sensor. And yes I cleared it and been driving it since clearing it no check engine or fault codes.
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Old Aug 22, 2019 | 11:36 AM
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Carry your code reader with you. It is important to know what codes come first.
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Old Aug 22, 2019 | 12:12 PM
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Will do maj,since yesterday ive been watching it after i cleared the fault codes
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