W213 Adblue Tank Replacement - Coding Required?

[ChrisPickford_]

Hi everyone,

Apologies if this has already been posted in another thread somewhere, however I was unable to find any information on it.

My car has started throwing up engine management lights and after some research and looking into the codes, it seems to be a common fault with the AdBlue sensor and pump. I’m looking to replace the tank myself as it’s an easy enough job, however one of the parts suppliers I’ve contacted has advised that the new tank may need coding with Xentry.

Does anyone know if this is true, or if it will be a plug and play? I’ve read numerous forum posts about the replacement and no one has mentioned needing to code it.

Thanks in advance,
Chris

 

[w213probs]

Hi everyone,

Apologies if this has already been posted in another thread somewhere, however I was unable to find any information on it.

My car has started throwing up engine management lights and after some research and looking into the codes, it seems to be a common fault with the AdBlue sensor and pump. I’m looking to replace the tank myself as it’s an easy enough job, however one of the parts suppliers I’ve contacted has advised that the new tank may need coding with Xentry.

Does anyone know if this is true, or if it will be a plug and play? I’ve read numerous forum posts about the replacement and no one has mentioned needing to code it.

Thanks in advance,
Chris

If its the same part number then no coding required.

However the fault would be stored in the memory so it would be good to clear it and at the same time the coding = Adaptation.

There are two variations of the adblue tank for w213 same part number but one with 5 and the other with 6 in the part number. one is with Bosch pump and the other with Ebmpapst pump.

Both tanks will fit. If you are changing from 5 to 6 or 6 to 5 then adaptation will be required. otherwise if its exactly the same no coding required.

Did you change the tank already?

 

[ChrisPickford_]

After this post I actually found a new tank listed by a Mercedes dealer, except it had a different part number. They’ve advised that A2134706001 has been superseded by A2134705402, so I placed on order for this one.

They’ve also advised that no coding is needed and it should be plug & play, even with it being a different part number. I’m currently waiting for it to arrive, so we’ll see what happens when I get round to fitting it, hopefully next weekend.

I’m hoping that the revised design has done something to improve the issues with the level sensors on them.

 

[ChrisPickford_]

I’ve replaced the adblue tank and the level sensor is now back working and readinas normal with no EMLs on.

I’ve fitted it and bled the system using my diagnostics and the level is going down, indicating everything’s working. The only issue I seem to be having now is that it’s saying it’s used 1/4 tank of AdBlue in a journey that’s less than 30 miles. I’ve never noticed it dropping this quickly before.

I need to check the obvious to make sure there’s no leaks, however is there something I’ve missed or something else that needs to be reset? Or could it just be the DPF saying it needs a good clean after not having the correct amount of adblue being delivered for a long time with the previous faulty tank?

Thanks in advance.