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I have GL320 in my shop. It first had a code 20BE1B, output…

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I have GL320 in my...
I have GL320 in my shop. It first had a code 20BE1B, output for element AdBlue tank has malfunction. We replaced AdBlue tank assemble with module ( complete assembly ). Now we have a code 20E823 and my scanner does not give a description and can not find any info in my repair manuals.
Any help greatly appreciated, Woody
Submitted: 2 years ago.Category: Mercedes
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1/27/2016
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago
Lou P. master tech
Lou P. master tech, Mercedes Technician
Category: Mercedes
Satisfied Customers: 5,878
Experience: 20 years Master Certified excellent fix rate and have access to factory wiring, and instructions.
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Hello woody, what kind of scan tool are you using, most times a software update of the scr module is what is needed for the heater fault codes. also i will need the vin of the GL

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Customer reply replied 2 years ago
4JGBF25E79A499051- Matco Maximus. Heater fault code has not returned after tank assemble replacement just 20E823.
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago

ok, let me see if i can access the code, sometimes without the scanner hooked up its hard to get info on codes. give me a few moments.Lou.

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Customer reply replied 2 years ago
Ok thanks.
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago

what control module does the scanner say you have for the engine, is it cdi4 cdi5 cdi6 cdi60ls or cdi6 bin5 ? does it show for the control module version?

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Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago

nevermind i found it, the code states that pressure in the adblue system is too low. so you may have a leak, what exactly did you replace??

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Customer reply replied 2 years ago
Customer has the car they had to leave but I think my scanner will tell me but I`ll have to get them back in to hook up to it again.
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago

no worries , please see my last reply.

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Customer reply replied 2 years ago
The AdBlue tank assembly from Mercedes.
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago

OK, but did it come with the pump on top?

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Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago

can your scanner do activations of the adblue system? our mercedes scanner can activate the pump and readout the pressure. mu guess is theres a line not connected somewhere or the new assembly is faulty.

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Customer reply replied 2 years ago
I believe my scanner does. There is only the one line and I don`t see any leaks and line connections all look good. I`ll get the car back in soon and double check and also see if I can activate pump. The tank came with incorrect line and parts dept. at Mercedes said the techs usually reuse the one from the old unit so that's. what I did. My only other question would be that line has 2 electrical sensor of some type. Are those sensors pressure sensors.
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago

Those are heaters, the pressure sensor is internal to the pump from what i remember. but the line scenario does not make sense to me , i dont remember having to use anything like that or alter anything. thats weird.

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Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago

DID you make any progress?

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Customer reply replied 2 years ago
Car will be back in on Monday. I'll check again for leaks and try to run the pump and see if I can get a pressure reading. And yes tank came with everything including pump.
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago

Ok. Thanks for getting back. After doing the test you will be able to determine if the new assembly is defective or if the spray nozzle is leaking.

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