Adblue issue

[30025574]

Hi all,
Was wondering if anyone had occurred this issue before. Pictures explain, it came on after one day I started car all warning lights were on told me not to drive or select gear I checked battery voltage. It was 9vollts so change the battery all lights disappeared except EML car ran normally scanned EML issue came up with this and will not clear.
Help please!

 

[EmilysDad]

could it be as simple as low level Adblue?

And welcome to the forum

 

[Blobcat]

Hello and welcome,

How old is the car and do you have any warranty?

As you have 2.1 in "your Mercedes" then it implies it's 2016 at the newest so out of original MB warranty.

Hopefully it's as per above although I fear it isn't and that a decent sized bill could be heading your way.

 

[John Laidlaw]

Welcome, a feeling this came up recently with a member’s ML or GLE racking my brain but I seem to remember it was a known fault by MB...

 

[30025574]

Hi thank you for the warm welcome and quick responses it's a E class 2014 bluetec 2.1 litre diesel. Fault only came up as soon as battery was gone dead etc adblue tank was 3/4 full and now is full still no luck.

 

[30025574]

could it be as simple as low level Adblue?

And welcome to the forum

Tanks 3/4 full I've filled it up to top no luck

 

[30025574]

Tanks 3/4 full I've filled it up to top no luck

Thanks for warm welcome and response

 

[Blobcat]

Just having a quick search through the forum and the possible problems are:

NoX sensors faulty requiring replacement (or blown fuse for NoX sensor)
AdBlue Injector Fault
AdBlue Heater Element issues requiring software update

 

[30025574]

Thanks blob at I will start with fuses as just pit new battery in may have shorted something I'm sure I had a new NOx sensor 6months ago was expensive to lol

 

[John Laidlaw]

As BC
This was the thread I was thinking https://forums.mercedesclub.org.uk/index.php?threads/adblue-warning-light-reset-fault-w166.168167/
@Steve@Avantgarde mentioned TIPS document requiring a software reset

 

[30025574]

As BC
This was the thread I was thinking https://forums.mercedesclub.org.uk/index.php?threads/adblue-warning-light-reset-fault-w166.168167/
@Steve@Avantgarde mentioned TIPS document requiring a software reset

Thank you I've read this post but thanks for making the effort to help I appreciate it

 

[malcolm E53 AMG]

Something to be said for maintaining a 12V supply with the newer Mercs when changing a battery, with this fault in all probability it requires a STAR reset assuming the fuse is ok

 

[Chrishazle]

Just don't connect the slave battery to the OBD port as a clown at Halfords did when changing the battery on my S204 c220 - lcoked the gearstick in P (had to use the emergency release to get mobile) blew the 12v supply to the OBD port so my indie could not read codes, did something to the secondary power supply to the TCM, cost Halfords £174 at my indie to sort it!

 

[30025574]

Turned out it needed a new battery that and after it had a full drive cycle it aloud me to clear fault had no problems since

 

[Wighty]

Turned out it needed a new battery that and after it had a full drive cycle it aloud me to clear fault had no problems since

MB’s do hate low voltage , as many of us have found out . Well done